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Welded Neck Flange Supplier In China

Welded Neck Flange Supplier In China

  • Welded Neck Flange
  • Welded Neck Flange
  • Welded Neck Flange
  • Welded Neck Flange
  • Welded Neck Flange
  • Welded Neck Flange
  • Welded Neck Flange
  • Welded Neck Flange
  • Welded Neck Flange
  • Welded Neck Flange

Welded Neck Flange

The Welding Flange Is The Main Component Of A High-Pressure Pipeline System Connection, According To The Different Connection Surfaces Can Be Divided Into RF, FF, RTJ, And SW Types, According To The Material Carbon Steel, Stainless Steel, Alloy Steel, And Duplex Stainless Steel Material.

Usually The Implementation Of Standards For ASME B16.5, ASME B16.47, And API 6A Standards, The Pressure Value Of 150lb To 2500lb, 0 ^ 20,000PSI.

Balingsteel Is A Professional Flange Manufacturer, With A Large Inventory, If You Need It, Please Contact Us!

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OUR PRODUCT

Recommended Products By Balingsteel

High Quality Welded Neck Flange

Balingsteel Has More Than 20 Precision Lathes to Process Welded Neck Flange, Forging of Raw Materials, Precision Machining, Heat Treatment, and Tempering, and Customized Packaging Processes, We Have 4 Re-Inspection Processes Above Standard Requirements to Produce Your Flanges.

If You Are Looking for a Reliable Flange Supplier, Balingsteel Will Be Your Good Choice, Please Feel Free to Contact Us for a Quote!

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High Quality Welded Neck Flange
Adequate Stock Welded Neck Flange

Adequate Stock Welded Neck Flange

Balingsteel Has a Large Stock of Flanges in the Following Standards:

Flange Size  Pressure Rating Materials Standard
1/2″-60″    Class
150-2500		 A105, A181,
A182, A350		 ANSI B16.5
MSS SP-44
API 605
1/2″ – 36″    Class
150-2500		 BS 4360 Gr.43A
BS970		 BS4504
BS10

We Can Deliver Your Flanges in the Above Standards Within 7 Days, Please Contact Us to Get Your Flanges Now!

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Dimensions and Weight

The Following Is the Size Table and Meter Weight Table of Welded Neck Flange, If You Need More Detailed Technical Parameters, Please Feel Free to Contact Us!

  • ASME B16.5
  • ASME B16.47 Series A
  • ASME B16.47 Series B
  • EN 1092-1

ASME B16.5 Welded Neck Flange Dimensions and Weight:

ASME B16.5 Flange Data Sheet

 Class 150

    Dimensions in mm
Nominal
Pipe
Size		 Outside
Diam. of
Flange		 Minimum
Thickness
of Flange		 Minimum
Thickness
Lap Joint		 O.D.of
Raised
Face		 Diam. of
Hub		 Bore Length Through Hub Diam. of
Hub at
Bevel		 Corner Bore
Radius
of Lapped
Flange and
Pipe		 Minimum
Thread
Length
Threaded
Flange		 Depth
of
Socket
Welding
Neck/
Socket
Welding		 Minimum
Slip-on/
Socket
Welding		 Minimum
Lapped		 Welding
Neck		 Slip-on/
Threaded/
Socket
Welding		 Lapped
D t t G X B1 B2 B3 T1 T2 T3 A R Q Y
1/2 90 9.6 11.2 34.9 30 15.8 22.2 22.9 46 14 16 21.3 3 16 10
3/4 100 11.2 12.7 42.9 38 20.9 27.7 28.2 51 14 16 26.7 3 16 11
1 110 12.7 14.3 50.8 49 26.6 34.5 34.9 54 16 17 33.4 3 17 13
1-1/4 115 14.3 15.9 63.5 59 35.1 43.2 43.7 56 19 21 42.2 5 21 14
1-1/2 125 15.9 17.5 73.0 65 40.9 49.5 50.0 60 21 22 48.3 6 22 16
2 150 17.5 19.1 92.1 78 52.5 61.9 62.5 62 24 25 60.3 8 25 17
2-1/2 180 20.7 22.3 104.8 90 62.7 74.6 75.4 68 27 29 73.0 8 29 19
3 190 22.3 23.9 127.0 108 77.9 90.7 91.4 68 29 30 88.9 10 30 21
3-1/2 215 22.3 23.9 139.7 122 90.1 103.4 104.1 70 30 32 101.6 10 32 –
4 230 22.3 23.9 157.2 135 102.3 116.1 116.8 75 32 33 114.3 11 33 –
5 255 22.3 23.9 185.7 164 128.2 143.8 144.4 87 35 36 141.3 11 36 –
6 280 23.9 25.4 215.9 192 154.1 170.7 171.4 87 38 40 168.3 13 40 –
8 345 27.0 28.6 269.9 246 202.7 221.5 222.2 100 43 44 219.1 13 44 –
10 405 28.6 30.2 323.8 305 254.6 276.2 277.4 100 48 49 273.0 13 49 –
12 485 30.2 31.8 381.0 365 304.8 327.0 328.2 113 54 56 323.8 13 56 –
14 535 33.4 35.0 412.8 400 359.2 360.2 125 56 79 355.6 13 57 –
16 595 35.0 36.6 469.9 457 To be 410.5 411.2 125 62 87 406.4 13 64 –
18 635 38.1 39.7 533.4 505 Specified
by the		 461.8 462.3 138 67 97 457.0 13 68 –
20 700 41.3 42.9 584.2 559 Purchaser 513.1 514.4 143 71 103 508.0 13 73 –
24 815 46.1 47.7 692.2 663 616.0 616.0 151 81 111 610.0 13 83 –

Class 300

 Dimensions in mm
Nominal
Pipe
Size		 Outside
Diam. of
Flange		 Minimum
Thickness
of Flange		 Minimum
Thickness
Lap Joint		 O.D.of
Raised
Face		 Diam.
of
Hub		 Bore Counter
Bore		 Length Through Hub Diam.
of
Hub at
Bevel		 Corner
Bore
Radius
of
Lapped
Flange
and Pipe		 Minimum
Thread
Length
Threaded
Flange		 Depth
of
Socket
Welding
Neck/
Socket
Welding		 Minimum
Slip-on/
Socket
Welding		 Minimum
Lapped		 Minimum
Threaded
Flange		 Welding
Neck		 Slip-on/
Threaded/
Socket
Welding		 Lapped
D t t G X B1 B2 B3 B T1 T2 T3 A R Q Y
1/2 95 12.7 14.3 34.9 38 15.8 22.2 22.9 23.6 51 21 22 21.3 3 16 10
3/4 115 14.3 15.9 42.9 48 20.9 27.7 28.2 29.0 56 24 25 26.7 3 16 11
1 125 15.9 17.5 50.8 54 26.6 34.5 34.9 35.8 60 25 27 33.4 3 18 13
1-1/4 135 17.5 19.1 63.5 64 35.1 43.2 43.7 44.4 64 25 27 42.2 5 21 14
1-1/2 155 19.1 20.7 73.0 70 40.9 49.5 50.0 50.3 67 29 30 48.3 6 23 16
2 165 20.7 22.3 92.1 84 52.5 61.9 62.5 63.5 68 32 33 60.3 8 29 17
2-1/2 190 23.9 25.4 104.8 100 62.7 74.6 75.4 76.2 75 37 38 73.0 8 32 19
3 210 27.0 28.6 127.0 117 77.9 90.7 91.4 92.2 78 41 43 88.9 10 32 21
3-1/2 230 28.6 30.2 139.7 133 90.1 103.4 104.1 104.9 79 43 44 101.6 10 37 –
4 255 30.2 31.8 157.2 146 102.3 116.1 116.8 117.6 84 46 48 114.3 11 37 –
5 280 33.4 35.0 185.7 178 128.2 143.8 144.4 144.4 97 49 51 141.3 11 43 –
6 320 35.0 36.6 215.9 206 154.1 170.7 171.4 171.4 97 51 52 168.3 13 47 –
8 380 39.7 41.3 269.9 260 202.7 221.5 222.2 222.2 110 60 62 219.1 13 51 –
10 445 46.1 47.7 323.8 321 254.6 276.2 277.4 276.2 116 65 95 273.0 13 56 –
12 520 49.3 50.8 381.0 375 304.8 327.0 328.2 328.6 129 71 102 323.8 13 61 –
14 585 52.4 54.0 412.8 425 359.2 360.2 360.4 141 75 111 355.6 13 64 –
16 650 55.6 57.2 469.9 483 To be 410.5 411.2 411.2 144 81 121 406.4 13 69 –
18 710 58.8 60.4 533.4 533 specified
by the		 461.8 462.3 462.0 157 87 130 457.0 13 70 –
20 775 62.0 63.5 584.2 587 Purchaser 513.1 514.4 512.8 160 94 140 508.0 13 74 –
24 915 68.3 69.9 692.2 702 616.0 616.0 614.4 167 105 152 616.0 13 83 –

Class 600

 Dimensions in mm
Nominal
Pipe
Size		 Outside
Diam.
of
Flange		 Minimum
Thickness
of Flange		 O.D.of
Raised
Face		 Diam.
of Hub		 Bore Counter
Bore		 Length Through Hub Diam.
of Hub
at Bevel		 Corner
Bore
Radius of
Lapped
Flange
and Pipe		 Minimum
Thread
Length
Threaded
Flange		 Depth
of
Socket
Welding
Neck/
Socket
Welding		 Minimum
Slip-on/
Socket
Welding		 Minimum
Lapped		 Minimum
Threaded
Flange		 Welding
Neck		 Slip-on/
Threaded/
Socket
Welding		 Lapped
D t G X B1 B2 B3 B T1 T2 T3 A R Q Y
1/2 95 14.3 34.9 38 22.2 22.9 23.6 52 22 22 21.3 3 16 10
3/4 115 15.9 42.9 48 27.7 28.2 29.0 57 25 25 26.7 3 16 11
1 125 17.5 50.8 54 34.5 34.9 35.8 62 27 27 33.4 3 18 13
1-1/4 135 20.7 63.5 64 43.2 43.7 44.4 67 29 29 42.2 5 21 14
1-1/2 155 22.3 73.0 70 49.5 50.0 50.6 70 32 32 48.3 6 23 16
2 165 25.4 92.1 84 61.9 62.5 63.5 73 37 37 60.3 8 29 17
2-1/2 190 28.6 104.8 100 74.6 75.4 76.2 79 41 41 73.0 8 32 19
3 210 31.8 127.0 117 90.7 91.4 92.2 83 46 46 88.9 10 35 21
3-1/2 230 35.0 139.7 133 103.4 104.1 104.9 86 49 49 101.6 10 40 –
4 275 38.1 157.2 152 To be
specified		 116.1 116.8 117.6 102 54 54 114.3 11 42 –
5 330 44.5 185.7 189 by the
Purchaser.		 143.8 144.4 144.4 114 60 60 141.3 11 48 –
6 355 47.7 215.9 222 170.7 171.4 171.4 117 67 67 168.3 13 51 –
8 420 55.6 269.9 273 221.5 222.2 222.2 133 76 76 219.1 13 58 –
10 510 63.5 323.8 343 276.2 277.4 276.2 152 86 111 273.0 13 66 –
12 560 66.7 381.0 400 327.0 328.2 328.6 156 92 117 323.8 13 70 –
14 605 69.9 412.8 432 359.2 360.2 360.4 165 94 127 355.6 13 74 –
16 685 76.2 469.9 495 410.5 411.2 411.2 178 106 140 406.4 13 78 –
18 745 82.6 533.4 546 461.8 462.3 462.0 184 117 152 457.0 13 80 –
20 815 88.9 584.2 610 513.1 514.4 512.8 190 127 165 508.0 13 83 –
24 940 101.6 692.2 718 616.0 616.0 614.4 203 140 184 610.0 13 93 –

Class 900

 Dimensions in mm
Nominal
Pipe
Size		 Outside
Diam. of
Flange		 Minimum
Thickness
of Flange		 O.D.of
Raised
Face		 Diam.
of
Hub		 Bore Counter
Bore		 Length Through Hub Diam. of
Hub at
Bevel		 Corner Bore
Radius of
Lapped
Flange
and Pipe		 Minimum
Thread
Length
Threaded
Flange
Welding
Neck		 Minimum
Slip-on		 Minimum
Lapped		 Minimum
Threaded
Flange		 Welding
Neck		 Slip-on/
Threaded		 Lapped
D t G X B1 B2 B3 B T1 T2 T3 A R Q
1/2 120 22.3 34.9 38 22.2 22.9 23.6 60 32 32 21.3 3 23
3/4 130 25.4 42.9 44 To be
specified
by the
Purchaser.		 27.7 28.2 29.0 70 35 35            26.7 3 26
1 150 28.6 50.8 52 34.5 34.9 35.8 73 41 41 33.4 3 29
1-1/4 160 28.6 63.5 64 43.2 43.7 44.4 73 41 41 42.2 5 31
1-1/2 180 31.8 73.0 70 49.5 50.0 50.6 83 44 44 48.3 6 32
2 215 38.1 92.1 105 61.9 62.5 63.5 102 57 57            60.3 8 39
2-1/2 245 41.3 104.8 124 74.6 75.4 76.2 105 64 64 73.0 8 48
3 240 38.1 127.0 127 90.7 91.4 92.2 102 54 54 88.9 10 42
4 290 44.5 157.2 159 116.1 116.8 117.6 114 70 70 114.3 11 48
5 350 50.8 185.7 190 143.8 144.4 144.4 127 79 79 141.3 11 54
6 380 55.6 215.9 235 170.7 171.4 171.4 140 86 86 168.3 13 58
8 470 63.5 269.9 298 221.5 222.2 222.2 162 102 114 219.1 13 64
10 545 69.9 323.8 368 276.2 277.4 276.2 184 108 127 273.0 13 72
12 610 79.4 381.0 419 327.0 328.2 328.6 200 117 143 323.8 13 77
14 640 85.8 412.8 451 359.2 360.2 360.4 213 130 156 355.6 13 83
16 705 88.9 469.9 508 410.5 411.2 411.2 216 133 165 406.4 13 86
18 785 101.6 533.4 565 461.8 462.3 462.0 229 152 190 457.0 13 89
20 855 108.0 584.2 622 513.1 514.4 512.8 248 159 210 508.0 13 93
24 1040 139.7 692.2 749 616.0 616.0 614.4 292 203 267 610.0 13 102

Class 1500

 Dimensions in mm
Nominal
Pipe
Size		 Outside
Diam. of
Flange		 Minimum
Thickness
of Flange		 O.D.of
Raised
Face		 Diam.
of Hub		 Bore Counter
Bore		 Length Through Hub Diam. of
Hub at
Bevel		 Corner
Bore
Radius of
Fillet of
Lapped		 Minimum
Thread
Length
Threaded
Flange		 Depth
of
Socket
Welding
Neck/
Socket
Welding		 Minimum
Slip-on/
Socket
Welding		 Minimum
Lapped		 Minimum
Threaded
Flange		 Welding
Neck		 Slip-on/
Threaded/
Socket
Welding		 Lapped
D t G X B1 B2 B3 B T1 T2 T3 A R Q Y
1/2 120 22.3 34.9 38 22.2 22.9 23.6 60 32 32 21.3 3 23 10
3/4 130 25.4 42.9 44 27.7 28.2 29.0 70 35 35 26.7 3 26 11
1 150 28.6 50.8 52 34.5 34.9 35.8 73 41 41 33.4 3 29 13
1-1/4 160 28.6 63.5 64 43.2 43.7 44.4 73 41 41 42.2 5 31 14
1-1/2 180 31.8 73.0 70 49.5 50.0 50.6 83 44 44 48.3 6 32 16
2 215 38.1 92.1 105 61.9 62.5 63.5 102 57 57 60.3 8 39 17
2-1/2 245 41.3 104.8 124 74.6 75.4 76.2 105 64 64 73.0 8 48 19
3 265 47.7 127.0 133 – 91.4 – 117 – 73 88.9 10 – –
4 310 54.0 157.2 162 To be – 116.8 – 124 – 90 114.3 11 – –
5 375 73.1 185.7 197 specified
by the		 – 144.4 – 156 – 105 141.3 11 – –
6 395 82.6 215.9 229 Purchaser. – 171.4 – 171 – 119 168.3 13 – –
8 485 92.1 269.9 292 – 222.2 – 213 – 143 219.1 13 – –
10 585 108.0 323.8 368 – 277.4 – 254 – 178 273.0 13 – –
12 675 123.9 381.0 451 – 328.2 – 283 – 219 323.8 13 – –
14 750 133.4 412.8 495 – 360.2 – 298 – 241 355.6 13 – –
16 825 146.1 469.9 552 – 411.2 – 311 – 260 406.4 13 – –
18 915 162.0 533.4 597 – 462.3 – 327 – 276 457.0 13 – –
20 985 177.8 584.2 641 – 514.4 – 356 – 292 508.0 13 – –
24 1170 203.2 692.2 762 – 616.0 – 406 – 330 610.0 13 – –

If You Want More Details About Welded Neck Flange, Please Feel Free to Contact Us!

ASME B16.47 Series A Welded Neck Flange Dimensions and Weight:

ASME B16.47 Series A Flange Data Sheet

Class 150 Series A

 Dimensions in mm
    Nominal
Pipe
Size		 O.D.of
Flange,O		 Minimum
Thickness of
Flange,tf
[Note(1)]		 Length
Through
Hub,Y		 Diam.of
Hub,X
[Note(2)]		       Hub
Diam.
Top,A		 Raised
Face
Diam.,R		 Drilling Diam.
of Bolt		     Minimum
Fillet
Radius,r1
Diam.
of Bolt
Circle		 No.of
Bolt
Holes		 Diam.
of Bolt
Hole
WNF Blind
26 870 66.7 66.7 119 676 660.4 749 806.4 24 1-3/8 1-1/4   10
28 925 69.9 69.9 124 727 711.2 800 863.6 28 1-3/8 1-1/4   11
30 985 73.1 73.1 135 781 762.0 857 914.4 28 1-3/8 1-1/4   11
32 1060 79.4 79.4 143 832 812.8 914 977.9 28 1-5/8 1-1/2   11
34 1110 81.0 81.0 148 883 863.6 965 1028.7 32 1-5/8 1-1/2   13
36 1170 88.9 88.9 156 933 914.4 1022 1085.8 32 1-5/8 1-1/2   13
38 1240 85.8 85.8 156 991 965.2 1073 1149.4 32 1-5/8 1-1/2   13
40 1290 88.9 88.9 162 1041 1016.0 1124 1200.2 36 1-5/8 1-1/2   13
42 1345 95.3 95.3 170 1092 1066.8 1194 1257.3 36 1-5/8 1-1/2   13
44 1405 100.1 100.1 176 1143 1117.6 1245 1314.4 40 1-5/8 1-1/2   13
46 1455 101.6 101.6 184 1197 1168.4 1295 1365.2 40 1-5/8 1-1/2   13
48 1510 106.4 106.4 191 1248 1219.2 1359 1422.4 44 1-5/8 1-1/2   13
50 1570 109.6 109.6 202 1302 1270.0 1410 1479.6 44 1-7/8 1-3/4   13
52 1625 114.3 114.3 208 1353 1320.8 1461 1536.7 44 1-7/8 1-3/4   13
54 1685 119.1 119.1 214 1403 1371.6 1511 1593.8 44 1-7/8 1-3/4   13
56 1745 122.3 122.3 227 1457 1422.4 1575 1651.0 48 1-7/8 1-3/4   13
58 1805 127.0 127.0 233 1508 1473.2 1626 1708.2 48 1-7/8 1-3/4   13
60 1855 130.2 130.2 238 1559 1524.0 1676 1759.0 52 1-7/8 1-3/4   13

Class 300 Series A 

 Dimensions in mm
Nominal
Pipe
Size		 O.D.of
Flange,O		 Minimum
Thickness of
Flange,tf
[Note(1)]		 Length
Through
Hub,Y		 Diam.of
Hub,X
[Note(2)]		 Hub
Diam.
Top,A		 Raised
Face
Diam.,R		 Drilling Diam.
of Bolt		 Minimum
Fillet
Radius,r1
Diam.
of Bolt
Circle		 No.of
Bolt
Holes		 Diam.
of Bolt
Hole
WNF Blind
26 970 77.8 82.6 183 721 660.4 749 876.3 28 1-3/4 1-5/8 10
28 1035 84.2 88.9 195 775 711.2 800 939.8 28 1-3/4 1-5/8 11
30 1090 90.5 93.7 208 827 762.0 857 997.0 28 1-7/8 1-3/4 11
32 1150 96.9 98.5 221 881 812.8 914 1054.1 28 2 1-7/8 11
34 1205 100.1 103.2 230 937 863.6 965 1104.9 28 2 1-7/8 13
36 1270 103.2 109.6 240 991 914.4 1022 1168.4 32 2-1/8 2 13
38 1170 106.4 106.4 179 994 965.2 1029 1092.2 32 1-5/8 1-1/2 13
40 1240 112.8 112.8 192 1048 1016.0 1086 1155.7 32 1-3/4 1-5/8 13
42 1290 117.5 117.5 198 1099 1066.8 1137 1206.5 32 1-3/4 1-5/8 13
44 1355 122.3 122.3 205 1149 1117.6 1194 1263.6 32 1-7/8 1-3/4 13
46 1415 127.0 127.0 214 1203 1168.4 1245 1320.8 28 2 1-7/8 13
48 1465 131.8 131.8 222 1254 1219.2 1302 1371.6 32 2 1-7/8 13
50 1530 138.2 138.2 230 1305 1270.0 1359 1428.8 32 2-1/8 2 13
52 1580 142.9 142.9 237 1356 1320.8 1410 1479.6 32 2-1/8 2 13
54 1660 150.9 150.9 251 1410 1371.6 1467 1549.4 28 2-3/8 2-1/4 13
56 1710 152.4 152.4 259 1464 1422.4 1518 1600.2 28 2-3/8 2-1/4 13
58 1760 157.2 157.2 265 1514 1473.2 1575 1651.0 32 2-3/8 2-1/4 13
60 1810 162.0 162.0 271 1565 1524.0 1626 1701.8 32 2-3/8 2-1/4 13

Class 400 Series A

 Dimensions in mm
Nominal
Pipe
Size		 Minimum
Thickness of
Flange,
[Note(1)]		 Length
Through
Hub,Y		 Diam.of
Hub,X
[Note(2)]		       Hub
Diam.
Top,A		 Raised
Face
Diam.,R		 Drilling Diam.
of Bolt		     Minimum
Fillet
Radius,r1
O.D.of
Flange,O		 Diam.
of Bolt
Circle		 No.of
Bolt
Holes		 Diam.
of Bolt
Hole
WNF Blind
26 970 88.9 98.5 194 727 660.4 749 876.3 28 1-7/8 1-3/4   11
28 1035 95.3 104.8 206 783 711.2 800 939.8 28 2 1-7/8   13
30 1090 101.6 111.2 219 837 762.0 857 997.0 28 2-1/8 2   13
32 1150 108.0 115.9 232 889 812.8 914 1054.1 28 2-1/8 2   13
34 1205 111.2 122.3 241 945 863.6 965 1104.9 28 2-1/8 2   14
36 1270 114.3 128.6 251 1000 914.4 1022 1168.4 32 2-1/8 2   14
38 1205 123.9 123.9 206 1003 965.2 1035 1117.6 32 1-7/8 1-3/4   14
40 1270 130.2 130.2 216 1054 1016.0 1092 1174.8 32 2 1-7/8   14
42 1320 133.4 133.4 224 1108 1066.8 1143 1225.6 32 2 1-7/8   14
44 1385 139.7 139.7 233 1159 1117.6 1200 1282.7 32 2-1/8 2   14
46 1440 146.1 146.1 244 1213 1168.4 1257 1339.8 36 2-1/8 2   14
48 1510 152.4 152.4 257 1267 1219.2 1308 1403.4 28 2-3/8 2-1/4   14
50 1570 157.2 158.8 268 1321 1270.0 1362 1460.5 32 2-3/8 2-1/4   14
52 1620 162.0 163.6 276 1372 1320.8 1413 1511.3 32 2-3/8 2-1/4   14
54 1700 169.9 171.5 289 1426 1371.6 1470 1581.2 28 2-5/8 2-1/2   14
56 1755 174.7 176.3 298 1480 1422.4 1527 1632.0 32 2-5/8 2-1/2   14
58 1805 177.8 181.0 306 1530 1473.2 1578 1682.8 32 2-5/8 2-1/2   14
60 1885 185.8 189.0 319 1584 1524.0 1635 1752.6 32 2-7/8 2-3/4   14

Class 600 Series A 

 Dimensions in mm
Nominal
Pipe
Size		 O.D.of
Flange,O		 Minimum
Thickness of
Flange,tf
[Note(1)]		 Length
Through
Hub,Y		 Diam.of
Hub,X
[Note(2)]		 Hub
Diam.
Top,A		 Raised
Face
Diam.,R		 Drilling Diam.
of Bolt		 Minimum
Fillet
Radius,r1
Diam.
of Bolt
Circle		 No.of
Bolt
Holes		       Diam.
of Bolt
Hole
WNF Blind
26 1015 108.0 125.5        222 748 660.4 749 914.4 28 2 1-7/8 13
28 1075 111.2 131.8        235 803 711.2 800 965.2 28 2-1/8 2 13
30 1130 114.3 139.7        248 862 762.0 857 1022.4 28 2-1/8 2 13
32 1195 117.5 147.7        260 918 812.8 914 1079.5 28 2-3/8 2-1/4 13
34 1245 120.7 154.0        270 973 863.6 965 1130.3 28 2-3/8 2-1/4 14
36 1315 123.9 162.0        283 1032 914.4 1022 1193.8 28 2-5/8 2-1/2 14
38 1270 152.4 155.0        254 1022 965.2 1054 1162.0 28 2-3/8 2-1/4 14
40 1320 158.8 162.0        264 1073 1016.0 1111 1212.8 32 2-3/8 2-1/4 14
42 1405 168.3 171.5        279 1127 1066.8 1168 1282.7 28 2-5/8 2-1/2 14
44 1455 173.1 177.8        289 1181 1117.6 1226 1333.5 32 2-5/8 2-1/2 14
46 1510 179.4 185.8        300 1235 1168.4 1276 1390.6 32 2-5/8 2-1/2 14
48 1595 189.0 195.3        316 1289 1219.2 1334 1460.5 32 2-7/8 2-3/4 14
50 1670 196.9 203.2        329 1343 1270.0 1384 1524.0 28 3-1/8 3 14
52 1720 203.2 209.6        337 1394 1320.8 1435 1574.8 32 3-1/8 3 14
54 1780 209.6 217.5        349 1448 1371.6 1492 1632.0 32 3-1/8 3 14
56 1855 217.5 225.5        362 1502 1422.4 1543 1695.4 32 3-3/8 3-1/4 16
58 1905 222.3 231.8        370 1553 1473.2 1600 1746.2 32 3-3/8 3-1/4 16
60 1995 233.4 242.9        389 1610 1524.0 1657 1822.4 28 3-5/8 3-1/2 17

Class 900 Series A 

 Dimensions in mm
Nominal
Pipe
Size		 O.D.of
Flange,O		 Minimum
Thickness of
Flange,tf
[Note(1)]		 Length
Through
Hub,Y		 Diam.of
Hub,X
[Note(2)]		 Hub
Diam.
Top,A		 Raised
Face
Diam.,R		 Drilling Diam.
of Bolt		 Minimum
Fillet
Radius,r1
Diam.
of Bolt
Circle		       No.of
Bolt
Holes		 Diam.
of Bolt
Hole
WNF Blind
26 1085 139.7 160.4 286 775 660.4 749 952.5 20 2-7/8 2-3/4         11
28 1170 142.9 171.5 298 832 711.2 800 1022.4 20 3-1/8 3         13
30 1230 149.3 182.6 311 889 762.0 857 1085.8 20 3-1/8 3         13
32 1315 158.8 193.7 330 946 812.8 914 1155.7 20 3-3/8 3-1/4         13
34 1395 165.1 204.8 349 1006 863.6 965 1225.6 20 3-5/8 3-1/2         14
36 1460 171.5 214.4 362 1064 914.4 1022 1289.0 20 3-5/8 3-1/2         14
38 1460 190.5 215.9 352 1073 965.2 1099 1289.0 20 3-5/8 3-1/2         19
40 1510 196.9 223.9 364 1127 1016.0 1162 1339.8 24 3-5/8 3-1/2         21
42 1560 206.4 231.8 371 1176 1066.8 1213 1390.6 24 3-5/8 3-1/2         21
44 1650 214.4 242.9 391 1235 1117.6 1270 1463.7 24 3-7/8 3-3/4         22
46 1735 225.5 255.6 411 1292 1168.4 1334 1536.7 24 4-1/8 4         22
48 1785 233.4 263.6 419 1343 1219.2 1384 1587.5 24 4-1/8 4         24
50 … … … … … … … … … … …         …
52 … … … … … … … … … … …         …
54 … … … … … … … … … … …         …
56 … … … … … … … … … … …         …
58 … … … … … … … … … … …         …
60 … … … … … … … … … … …         …

If You Want More Details About Welded Neck Flange, Please Feel Free to Contact Us!

ASME B16.47 Series B Welded Neck Flange Dimensions and Weight:

ASME B16.47 Series B Flange Data Sheet

Class 75 Series B

 Dimensions in mm
Nominal
Pipe
Size		 O.D.of
Flange,O		 Minimum
Thickness of
Flange,tf
[Note(1)]		 Length
Through
Hub,Y		 Diam.of
Hub,X
[Note(2)]		 Hub
Diam.
Top,A		 Raised
Face
Diam.,R		 Drilling Diam.
of Bolt		 Minimum
Fillet
Radius,r1
Diam.
of Bolt
Circle		 No.of
Bolt
Holes		 Diam.
of Bolt
Hole
WNF Blind
26 760 31.9 31.9 57 676 661.9 705 723.9 36 3⁄4 5⁄8  8
28 815 31.9 31.9 60 727 712.7 756 774.7 40 3⁄4 5⁄8  8
30 865 31.9 31.9 64 778 763.5 806 825.5 44 3⁄4 5⁄8  8
32 915 33.5 35.0 68 829 814.3 857 876.3 48 3⁄4 5⁄8  8
34 965 33.5 36.6 72 879 865.1 908 927.1 52 3⁄4 5⁄8  8
36 1035 35.0 40.9 84 935 915.9 965 992.2 40 7⁄8 3⁄4  10
38 1085 36.6 43.0 87 986 966.7 1016 1043 40 7⁄8 3⁄4  10
40 1135 36.6 43.0 91 1037 1017.5 1067 1093.8 44 7⁄8 3⁄4  10
42 1185 38.2 46.3 94 1087 1068.3 1118 1144.6 48 7⁄8 3⁄4  10
44 1250 41.4 47.7 103 1140 1119.1 1175 1203.3 36 1 7⁄8  10
46 1300 43.0 49.3 106 1191 1169.9 1226 1254.1 40 1 7⁄8  10
48 1355 44.6 52.5 110 1241 1220.7 1276 1304.9 44 1 7⁄8  10
50 1405 46.2 54.1 114 1294 1271.5 1327 1355.7 44 1 7⁄8  10
52 1455 46.2 55.7 119 1345 1322.3 1378 1409.7 48 1 7⁄8  10
54 1510 47.8 58.9 124 1397 1373.1 1429 1460.5 48 1 7⁄8  10
56 1575 49.3 60.4 133 1451 1423.9 1486 1520.8 40 1-1⁄8 1  11
58 1625 50.9 62.0 137 1502 1474.7 1537 1571.6 44 1-1⁄8 1  11
60 1675 54.1 65.2 143 1553 1525.5 1588 1622.4 44 1-1⁄8 1  11

Class 150 Series B

 Dimensions in mm
Nominal
Pipe
Size		 O.D.of
Flange,O		 Minimum
Thickness of
Flange,tf
[Note(1)]		 Length
Through
Hub,Y		 Diam.of
Hub,X
[Note(2)]		 Hub
Diam.
Top,A		     Raised
Face
Diam.,R		 Drilling Diam.
of Bolt		 Minimum
Fillet
Radius,r1
Diam.
of Bolt
Circle		 Diam.of Bolt Hole Diam.
of Bolt
Hole
WNF Blind
26 785 39.8 43.0 87 684 661.9 711 744.5 36 7⁄8 3⁄4        10
28 835 43.0 46.2 94 735 712.7 762 795.3 40 7⁄8 3⁄4        10
30 885 43.0 49.3 98 787 763.5 813 846.1 44 7⁄8 3⁄4        10
32 940 44.6 52.5 106 840 814.3 864 900.1 48 7⁄8 3⁄4        10
34 1005 47.7 55.7 109 892 865.1 921 957.3 40 1 7⁄8        10
36 1055 50.9 57.3 116 945 915.9 972 1009.6 44 1 7⁄8        10
38 1125 52.5 62.0 122 997 968.2 1022 1070.0 40 1-1⁄8 1        10
40 1175 54.1 65.2 127 1049 1019.0 1080 1120.8 44 1-1⁄8 1        10
42 1225 57.3 66.8 132 1102 1069.8 1130 1171.6 48 1-1⁄8 1        11
44 1275 58.9 70.0 135 1153 1120.6 1181 1222.4 52 1-1⁄8 1        11
46 1340 60.4 73.1 143 1205 1171.4 1235 1284.3 40 1-1⁄4 1-1⁄8        11
48 1390 63.6 76.3 148 1257 1222.2 1289 1335.1 44 1-1⁄4 1-1⁄8        11
50 1445 66.8 79.5 152 1308 1273.0 1340 1385.9 48 1-1⁄4 1-1⁄8        11
52 1495 68.4 82.7 156 1360 1323.8 1391 1436.7 52 1-1⁄4 1-1⁄8        11
54 1550 70.0 85.8 160 1413 1374.6 1441 1492.2 56 1-1⁄4 1-1⁄8        11
56 1600 71.6 89.0 165 1465 1425.4 1492 1543.0 60 1-1⁄4 1-1⁄8        14
58 1675 73.1 91.9 173 1516 1476.2 1543 1611.3 48 1-3⁄8 1-1⁄4        14
60 1725 74.7 95.4 178 1570 1527.0 1600 1662.1 52 1-3⁄8 1-1⁄4        14

Class 300 Series B

 Dimensions in mm
Nominal
Pipe
Size		 O.D.of
Flange,O		 Minimum
Thickness of
Flange,tf
[Note(1)]		 Length
Through
Hub,Y		 Diam.of
Hub,X
[Note(2)]		 Hub
Diam.
Top,A		 Raised
Face
Diam.,R		 Drilling Diam.
of Bolt		 Minimum
Fillet
Radius,r1
Diam.
of Bolt
Circle		 No.of
Bolt
Holes		 Diam.of Bolt Hole
WNF Blind
26 865 87.4 87.4 168 702 665.2 737 803.3 32 1-3⁄8 1-1⁄4 14
28 920 87.4 87.4 148 756 716.0 787 857.2 36 1-3⁄8 1-1⁄4 14
30 990 92.1 92.1 156 813 768.4 845 920.8 36 1-1⁄2 1-3⁄8 14
32 1055 101.6 101.6 167 864 819.2 902 977.9 32 1-5⁄8 1-1⁄2 16
34 1110 101.6 101.6 171 918 870.0 953 1031.9 36 1-5⁄8 1-1⁄2 16
36 1170 101.6 101.6 179 965 920.8 1010 1089.0 32 1-3⁄4 1-5⁄8 16
38 1220 109.6 109.6 165 1016 971.6 1060 1139.8 36 1-3⁄4 1-5⁄8 16
40 1275 114.3 114.3 197 1067 1022.4 1114 1190.6 40 1-3⁄4 1-5⁄8 16
42 1335 117.5 117.5 203 1118 1074.7 1168 1244.6 36 1-7⁄8 1-3⁄4 16
44 1385 125.5 125.5 213 1173 1125.5 1219 1295.4 40 1-7⁄8 1-3⁄4 16
46 1460 127.0 128.6 221 1229 1176.3 1270 1365.2 36 2 1-7⁄8 16
48 1510 127.0 133.4 222 1278 1227.1 1327 1416.0 40 2 1-7⁄8 16
50 1560 136.6 138.2 233 1330 1277.9 1378 1466.8 44 2 1-7⁄8 16
52 1615 141.3 142.6 241 1383 1328.7 1429 1517.6 48 2 1-7⁄8 16
54 1675 135.0 147.7 238 1435 1379.5 1480 1578.0 48 2 1-7⁄8 16
56 1765 152.4 155.4 267 1494 1430.3 1537 1651.0 36       2-3⁄8 2-1⁄4 17
58 1825 152.4 160.4 273 1548 1481.1 1594 1712.9 40       2-3⁄8 2-1⁄4 17
60 1880 149.3 165.1 270 1599 1557.3 1651 1763.7 40       2-3⁄8 2-1⁄4 17

Class 400 Series B

 Dimensions in mm
Nominal
Pipe
Size		 O.D.of
Flange,O		 Minimum
Thickness of
Flange,tf
[Note(1)]		 Length
Through
Hub,Y		 Diam.of
Hub,X
[Note(2)]		 Hub
Diam.
Top,A		 Raised
Face
Diam.,R		 Drilling        Diam.
of Bolt		 Minimum
Fillet
Radius,r1
Diam.
of Bolt
Circle		 No.of
Bolt
Holes		 Diam.
of Bolt
Hole
WNF Blind
26 850 88.9 88.9 149 689 660.4 711 781.0 28 1-1⁄2        1-3⁄8 11
28 915 95.3 95.3 159 740 711.2 762 838.2 24 1-5⁄8        1-1⁄2 13
30 970 101.6 101.6 170 794 762.0 819 895.4 28 1-5⁄8        1-1⁄2 13
32 1035 108.0 108.0 179 845 812.8 873 952.5 28 1-3⁄4        1-5⁄8 13
34 1085 111.2 111.2 187 899 863.6 927 1003.3 32 1-3⁄4        1-5⁄8 14
36 1155 119.1 119.1 200 952 914.4 981 1066.8 28 1-7⁄8        1-3⁄4 14
38 … … … … … … … … … …  … …
40 … … … … … … … … … …  … …
42 … … … … … … … … … …  … …
44 … … … … … … … … … …  … …
46 … … … … … … … … … …  … …
48 … … … … … … … … … …  … …
50 … … … … … … … … … …  … …
52 … … … … … … … … … …  … …
54 … … … … … … … … … …  … …
56 … … … … … … … … … …  … …
58 … … … … … … … … … …  … …
60 … … … … … … … … … …  … …

Class 600 Series B

 Dimensions in mm
Nominal
Pipe
Size		 O.D.of
Flange,O		 Minimum
Thickness of
Flange,tf
[Note(1)]		 Length
Through
Hub,Y		 Diam.of
Hub,X
[Note(2)]		 Hub
Diam.
Top,A		 Raised
Face
Diam.,R		 Drilling       Diam.
of Bolt		 Minimum
Fillet
Radius,r1
Diam.
of Bolt
Circle		 No.of
Bolt
Holes		       Diam.
of Bolt
Hole
WNF Blind
26 890 111.2 111.3 181 698 660.4 727 806.4 28 1-3⁄4 1-5⁄8 13
28 950 115.9 115.9 190 752 711.2 784 863.6 28 1-7⁄8 1-3⁄4 13
30 1020 125.5 127 205 806 762.0 841 927.1 28 2 1-7⁄8 13
32 1085 130.2 134.9 216 860 812.8 895 984.2 28       2-1⁄8 2 13
34 1160 141.3 144.2 233 914 863.6 953 1054.1 24       2-3⁄8       2-1⁄4 14
36 1215 146.1 150.9 243 968 914.4 1010 1104.9 28       2-3⁄8       2-1⁄4 14
38 … … … … … … … … … … … …
40 … … … … … … … … … … … …
42 … … … … … … … … … … … …
44 … … … … … … … … … … … …
46 … … … … … … … … … … … …
48 … … … … … … … … … … … …
50 … … … … … … … … … … … …
52 … … … … … … … … … … … …
54 … … … … … … … … … … … …
56 … … … … … … … … … … … …
58 … … … … … … … … … … … …
60 … … … … … … … … … … … …

Class 900 Series B

 Dimensions in mm
Nominal
Pipe
Size		 O.D.of
Flange,O		 Minimum
Thickness of
Flange,tf
[Note(1)]		 Length
Through
Hub,Y		 Diam.of
Hub,X
[Note(2)]		 Hub
Diam.
Top,A		 Raised
Face
Diam.,R		 Drilling Diam.
of Bolt		 Minimum
Fillet
Radius,r1
Diam.
of Bolt
Circle		       No.of
Bolt
Holes		 Diam.
of Bolt
Hole
WNF Blind
26 1020 135 154 259 743 660.4 762 901.7 20 2-5/8 2-1/2 11
28 1105 147.7 166.7 276 797 711.2 819 971.6 20 2-7/8 2-3/4 13
30 1180 155.6 176.1 289 851 762 876 1035 20 3-1/8 3 13
32 1240 160.4 186 303 908 812.8 927 1092.2 20 3-1/8 3 13
34 1315 171.5 195 319 962 863.6 991 1155.7 20 3-3/8 3-1/4 14
36 1345 173.1 201.7 325 1016 914.4 1029 1200.2 24 3-1/8 3 14
38 … … … … … … … … … … … …
40 … … … … … … … … … … … …
42 … … … … … … … … … … … …
44 … … … … … … … … … … … …
46 … … … … … … … … … … … …
48 … … … … … … … … … … … …
50 … … … … … … … … … … … …
52 … … … … … … … … … … … …
54 … … … … … … … … … … … …
56 … … … … … … … … … … … …
58 … … … … … … … … … … … …
60 … … … … … … … … … … … …

If You Want More Details About Welded Neck Flange, Please Feel Free to Contact Us!

 

EN 1092-1 Welded Neck Flange Dimensions and Weight:

PN 10

 Dimensions in mm
DN Mating dimensions Outside
Diameter
of
neck
A		 Bore diameters Flange thickness Chamfer
E
Outside Diameter
D		 Diameter of bolt circle
K		 Diameter of bolt hole
L		 Bolting
Number Size B1 B2 B3 C1 C2 C3 C4
Flange type
01, 02, 04, 05, 11, 12, 13, 21 11,21,34,35 – 37 01,12,32 02 04 10,204 11,12,13 21 05 204
10 90 60 14 4 M12 172 180 21 31 14 16 16 16 3
15 95 65 14 4 M12 213 220 25 35 14 16 16 16 3
20 105 75 14 4 M12 269 275 31 42 16 18 18 18 4
25 115 85 14 4 M12 337 345 38 49 16 18 18 18 4
32 140 100 18 4 M16 424 435 47 59 18 18 18 18 5
40 150 110 18 4 M16 483 495 53 67 18 18 18 18 5
50 165 125 18 4 M16 603 615 65 77 20 18 18 18 5
65 185 145 18 8 M16 761 775 81 96 20 18 18 18 6
80 200 160 18 8 M16 889 905 94 108 20 20 20 20 6
100 220 180 18 8 M16 1,143 1,160 120 134 22 20 20 20 6
125 250 210 18 8 M16 1,397 1,415 145 162 22 22 22 22 6
150 285 240 22 8 M20 1,683 1,705 174 188 24 22 22 22 6
200 340 295 22 8 M20 2,191 2,215 226 240 24 24 24 24 6
250 395 350 22 12 M20 2,730 2,765 281 294 26 26 26 26 8
300 445 400 22 12 M20 3,239 3,275 333 348 26 26 26 26 8
350 505 460 22 16 M20 3,556 3,595 365 400 30 26 26 26 8
400 565 515 26 16 M24 4,064 4,110 416 450 32 26 26 26 8
450 615 565 26 20 M24 4,570 4,620 467 498 36 28 28 28 8
500 670 620 26 20 M24 5,080 5,135 519 550 38 28 28 28 8
600 780 725 30 20 M27 6,100 6,165 622 650 42 30 34 34 8
700 895 840 30 24 M27 7,110 b 721 — 50 35 b 38 8
800 1015 950 33 24 M30 8,130 824 — 56 38 48 8
900 1115 1050 33 28 M30 9,140 926 — 62 38 50 8
1000 1230 1160 36 28 M33 10,160 1028 — 70 44 54 8
1200 1455 1380 39 32 M36 12,190 1234 — 83 55 66 8
1400 1675 1590 42 36 M39 14,220 — — — b 65 — —
1600 1915 1820 48 40 M45 16,260 — — — 75 — —
1800 2115 2020 48 44 M45 18,290 — — — 85 — —
2000 2325 2230 48 48 M45 20,320 — — — 90 — — —
2200 2550 2440 56 52 M52 22,350 — — — 100 — — —
2400 2760 2650 56 56 M52 24,380 — — — 110 — — —
2600 2960 2850 56 60 M52 26,200 — — — 110 — — —
2800 3180 3070 56 64 M52 28,200 — — — 124 — — —
3000 3405 3290 62 68 M56 30,200 — — — 132 — — —

PN 16

 Dimensions in mm
DN Mating dimensions Outside
Diameter
of
neck A		 Bore diameters Flange thickness Chamfer
E
Outside Diameter
D		 Diameter of bolt circle
K		 Diameter of bolt hole
L		 Bolting
Number Size B1 B2 B3 C1 C2 C3 C4
Flange type
01, 02, 04, 05, 11, 12, 13, 21 11,21, 34,
35 – 37		 11,232 02 04 01,02,04 11,12,13 21 05 204
10 90 60 14 4 M12 172 180 21 31 14 16 16 16 3
15 95 65 14 4 M12 213 220 25 35 14 16 16 16 3
20 105 75 14 4 M12 269 275 31 42 16 18 18 18 4
25 115 85 14 4 M12 337 345 38 49 16 18 18 18 4
32 140 100 18 4 M16 424 435 47 59 18 18 18 18 5
40 150 110 18 4 M16 483 495 53 67 18 18 18 18 5
50 165 125 18 4 M16 603 615 65 77 20 18 18 18 5
65 185 145 18 8b M16 761 775 81 96 20 18 18 18 6
80 200 160 18 8 M16 889 905 94 108 20 20 20 20 6
100 220 180 18 8 M16 1,143 1,160 120 134 22 20 20 20 6
125 250 210 18 8 M16 1,397 1,415 145 162 22 22 22 22 6
150 285 240 22 8 M20 1,683 1,705 174 188 24 22 22 22 6
200 340 295 22 12 M20 2,191 2,215 226 240 26 24 24 24 6
250 405 355 26 12 M24 2,730 2,765 281 294 29 26 26 26 8
300 460 410 26 12 M24 3,239 3,275 333 348 32 28 28 28 8
350 520 470 26 16 M24 3,556 3,590 365 400 35 30 30 30 8
400 580 525 30 16 M27 4,064 4,110 416 454 38 32 32 32 8
450 640 585 30 20 M27 4,570 4,620 467 500 42 34 40 40 8
500 715 650 33 20 M30 5,080 5,135 519 556 46 36 44 44 8
600 840 770 36 20 M33 6,100 6,165 622 660 55 40 54 54 8
700 910 840 36 24 M33 7,110 c 721 — 63 40 c 58 8
800 1025 950 39 24 M36 8,130 824 — 74 41 62 8
900 1125 1050 39 28 M36 9,140 926 — 82 48 64 8
1000 1255 1170 42 28 M39 10,160 1030 — 90 59 68 8
1200 1485 1390 48 32 M45 12,190 — — — c 78 — —
1400 1685 1590 48 36 M45 14,220 — — — 84 — —
1600 1930 1820 56 40 M52 16,260 — — — 102 — —
1800 2130 2020 56 44 M52 18,290 — — — 110 — —
2000 2345 2230 62 48 M56 20,320 — — — 124 — —

PN 25

 Dimensions in mm
DN Mating dimensions Outside
Diameter
of
neck
A		 Bore diameters Flange thickness Chamfer
E
Outside Diameter
D		 Diameter of bolt circle
K		 Diameter of bolt hole
L		 Bolting
Number Size B1 B2 B3 C1 C2 C3 C4
Flange type
01, 02, 04, 05, 11, 12, 13, 21 11,21,
34,35 – 37		 11,232 02 04 01,02,04 11,12,13 21 05 204
10 90 60 14 4 M12 172 180 21 31 14 16 16 16 3
15 95 65 14 4 M12 213 220 25 35 14 16 16 16 3
20 105 75 14 4 M12 269 275 31 42 16 18 18 18 4
25 115 85 14 4 M12 337 345 38 49 16 18 18 18 4
32 140 100 18 4 M16 424 435 47 59 18 18 18 18 5
40 150 110 18 4 M16 483 495 53 67 18 18 18 18 5
50 165 125 18 4 M16 603 615 65 77 20 20 20 20 5
65 185 145 18 8 M16 761 775 81 96 22 22 22 22 6
80 200 160 18 8 M16 889 905 94 114 24 24 24 24 6
100 235 190 22 8 M20 1,143 1,160 120 138 26 24 24 24 6
125 270 220 26 8 M24 1,397 1,415 145 166 28 26 26 26 6
150 300 250 26 8 M24 1,683 1,705 174 194 30 28 28 28 6
200 360 310 26 12 M24 2,191 2,215 226 250 32 30 30 30 6
250 425 370 30 12 M27 2,730 2,765 281 302 35 32 32 32 8
300 485 430 30 16 M27 3,239 3,275 333 356 38 34 34 34 8
350 555 490 33 16 M30 3,556 3,595 365 408 42 38 38 38 8
400 620 550 36 16 M33 4,064 4,110 416 462 48 40 40 40 8
450 670 600 36 20 M33 4,570 4,620 467 510 54 46 46 50 8
500 730 660 36 20 M33 5,080 5,135 519 568 58 48 48 51 8
600 845 770 39 20 M36 6,100 6,165 622 670 68 48 58 66 8
700 960 875 42 24 M39 7,110 b 721 — 85 50 b b 8
800 1085 990 48 24 M45 8,130 824 — 95 53 8
900 1185 1090 48 28 M45 9,140 — — b 57 —
1000 1320 1210 56 28 M52 10,160 — — — 63 —
1200 d
1400
1600
1800
2000

PN 40

 Dimensions in mm
DN Mating dimensions Outside
Diameter
of
neck
A		 Bore diameters Flange thickness Chamfer
E
Outside Diameter
D		 Diameter of bolt circle
K		 Diameter of bolt hole
L		 Bolting
Number Size B1          B2 B3 C1 C2 C3 C4
Flange type
01, 02, 04, 05, 11, 12, 13, 21 11,21,34 01,12,32      02 04 010204 11,12,13 21 05 204
10 90 60 14 4 M12 172 180      21 31 14 16 16 16 3
15 95 65 14 4 M12 213 220      25 35 14 16 16 16 3
20 105 75 14 4 M12 269 275      31 42 16 18 18 18 4
25 115 85 14 4 M12 337 345      38 49 16 18 18 18 4
32 140 100 18 4 M16 424 435      47 59 18 18 18 18 5
40 150 110 18 4 M16 483 495      53 67 18 18 18 18 5
50 165 125 18 4 M16 603 615      65 77 20 20 20 20 5
65 185 145 18 8 M16 761 775      81 96 22 22 22 22 6
80 200 160 18 8 M16 889 905      94 114 24 24 24 24 6
100 235 190 22 8 M20 1,143 1,160      120 138 26 24 24 24 6
125 270 220 26 8 M24 1,397 1,415      145 166 28 26 26 26 6
150 300 250 26 8 M24 1,683 1,705      174 194 30 28 28 28 6
200 375 320 30 12 M27 2,191 2,215      226 250 36 34 34 36 6
250 450 385 33 12 M30 2,730 2,765      281 312 42 38 38 38 8
300 515 450 33 16 M30 3,239 3,275      333 368 52 42 42 42 8
350 580 510 36 16 M33 3,556 3,595      365 418 58 46 46 46 8
400 660 585 39 16 M36 4,064 4,110      416 472 65 50 50 50 8
450 685 610 39 20 M36 4,570 4,620      467 510 d 57 57 57 8
500 755 670 42 20 M39 5,080 5,135      519 572 57 57 57 8
600 890 795 48 20 M45 6,100 6,165      622 676 72 72 72 8
700 b
800
900
1000
1200
1400
1600

PN 63

 Dimensions in mm
DN Mating dimensions Outside Diameter of neck
A		 Bore diameter Flange thickness
Outside Diameter
D		 Diameter of bolt circle
K		 Diameter of bolt hole
L		 Bolting
Number Size B1 C1 C2 C3 C4
Flange type
01, 02, 04, 05, 11, 12, 13, 21 1,121 112 01,02,04 11,12,13 21 05
10 100 70 14 4 M12 172 180 20 20 20 20
15 105 75 14 4 M12 213 220 20 20 20 20
20 130 90 18 4 M16 269 275 22 22 22 22
25 140 100 18 4 M16 337 345 24 24 24 24
32 155 110 22 4 M20 424 435 24 24 26 24
40 170 125 22 4 M20 483 495 26 26 28 26
50 180 135 22 4 M20 603 615 26 26 26 26
65 205 160 22 8 M20 761 775 26 26 26 26
80 215 170 22 8 M20 889 905 30 28 28 28
100 250 200 26 8 M24 1,143 1,160 32 30 30 30
125 295 240 30 8 M27 1,397 1,415 34 34 34 34
150 345 280 33 8 M30 1,683 1,705 36 36 36 36
200 415 345 36 12 M33 2,191 2,215 48 42 42 42
250 470 400 36 12 M33 2,730 2,765 55 46 46 46
300 530 460 36 16 M33 3,239 3,275 65 52 52 52
350 600 525 39 16 M36 3,556 3,595 72 56 56 56
400 670 585 42 16 M39 4,064 4,110 80 60 60 60
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If You Want More Details About Welded Neck Flange, Please Feel Free to Contact Us!

When Should I Use a Weld Neck Flange?

When We Need to Connect High-Pressure Pipes or Leave a Quick Access Port, We Need to Use a Weld Neck Flange. By Bolting the Blind Flange to the Weld Neck Flange, It Can Be Opened and Closed Quickly.

What Are the Advantages of Weld Neck Flanges?
  1. High Pressure Resistant – Typically Used in High-Pressure Pipelines and Lines in a Variety of Harsh Environments.
  2. Flexible – Can Be Quickly Bolted to Open and Close Pipelines.
  3. Long Service Life – Can Be Bolted to Pipelines for Unlimited Repairs.
What Is the Type of Weld Neck Flanges?
  • Types Based on Face Types:1.Flat Face (FF) Weld Neck Flange,2.Raised Face (RF) Weld Neck Flange,3.Ring Type Joint (RTJ) Weld Neck Flange
  • Types Based on End Connections:1.Butt Welded Neck Flange,2.Socket Welded Neck Flange,3.Threaded Weld Neck Flange

Balingsteel Offers You Different Types of Flanges, Please Contact Us for the Latest Quotation!

Welded Neck Flange Manufacturing Process:

Welded Neck Flange Manufacturing Process

Material Selection:

Procurement of raw material for forging according to customer’s material requirements.

Cutting and Shaping:

Cut the raw material into standard sizes and forge the initial shape of the flange.

Heat Treatment:

Perform heat treatment, such as annealing, normalizing or quenching, to improve the mechanical properties of the material and eliminate welding stress.

Heat Treatment---Welded Neck Flange Manufacturing Process

Mechanical Processing:

Perform mechanical processing such as turning, milling, drilling, etc. on the flanges.

Inspection and Testing:

Appearance inspection of the flanges, non-destructive testing (such as ultrasonic testing, ray testing, etc.) to ensure that the flanges can withstand the design pressure.

Surface Treatment:

The surface of the flanges is treated according to the contract requirements, such as sandblasting, painting, galvanizing or chroming.

Marking and Quality Control:

Marking and final inspection of finished flanges according to customers’ requirements.

Packing and Storage:

Pack the flanges properly and put them into finished goods warehouse waiting for shipment.

For More Product Information About the Welded Neck Flange, Please Contact Us.

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