Linepipe
Linepipe Steel Tubes Are Mainly Used For The Transport Of Oil And Gas And Have Standardised Production Standards.
Within This Standard, There Are Two Grades, PSL 1 And PSL 2. The PSL 2 Production Grade Is More Stringent.
Generally, a Line Pipe Less Than 2 Inches In Diameter Can Be Selected With Bevelled Or Plain Ends, But Line Pipe Greater Than 2 Inches In Diameter Must Be Bevelled To Facilitate Subsequent Butt Welding Of The Pipe.
Balingsteel Supplies Large Quantities Of Sch 40 And Sch 80 Steel Pipe.
Recommended Products By Balingsteel
Industry Applications for Linepipe
Pipelines Are Mainly Used for the Transportation of Liquids, Gases, and Petroleum, And Is Often Used in the Following Areas.

Pipeline Steel API 5l X42 or X56 Is Commonly Used for the Connection and Transportation of Oil and Gas Pipelines.

Pipeline Steels, After Tempering (Adding Rare Elements) and Heat Treatment, Have High Quality Acid and Alkali Resistance and Are Suitable for Transporting Chemical Liquids.

Pipeline Steel Can Be Connected to the Hydraulic and Fuel Systems of Machinery and Equipment.

Large Diameter Spiral Steel Pipe with Internal FBE Anti-Corrosion Coating Is Commonly Used for Water Pipeline Connection and Transportation.
Advantages of Steel Linepipe
Pipeline Steel Pipes Have the Following Advantages:
- Extensive Use
- Economic Costs
- Outstanding Performance
- Well-Established Standards
- High Pressure and High-Temperature Resistance

Type of Linepipe
According to the Difference in the Molding Method, Pipeline Steel Is Divided into Seamless Pipe, High-Frequency Resistance Welded Pipe, Submerged Welded Pipe, Spiral Welded Steel Pipe.

SMLS—Seamless Steel Pipe
Balingsteel Always Chooses Premium Quality Materials for Seamless Pipes That Meet Standards like ASTM, API, ISO, DNV, GOST, and GB. We Can Provide 1 ~28 Inch Seamless Steel Pipe for Your Choice. Just Give Us Your Size, and We Will supply it for You.

ERW&EFW—High-Frequency Resistance Welded Pipe
Balingsteel Has Strict Control over the Production Process of High-Frequency Resistance Welding with 100% Weld Flaw Inspection. Our OD Is from 1/2~48 Inch for Your Free Choice. Please Let Us Know What Size You Need.

LSAW—Submerged Welded Pipe
Balingsteel Can Produce LSAW by UOE, JCOE Method. Our Sizes Range from 12 ~68 Inches. If You Have a Special Thickness Requirement, Please Contact Us.

SSAW—Spiral Welded Steel Pipe
Balingsteel Provides the World with High-Quality SSAW, Our Calibers Range from 24“ to 100”. 12m, 24m, 36m 48m Lengths Are Available for You to Choose From!
Coating Solution for Linepipe
Pipeline Steel Usually Has Internal and External Anti-Corrosion Requirements, Generally Epoxy Resin Anti-Corrosion, 3LPE Anti-Corrosion, 3LPP Anti-Corrosion.
External Coating
External Coatings Provide Excellent Corrosion Resistance, Chemical Resistance, and Other Protection to Pipe Surfaces, Metal Structures, etc.., Which Can Greatly Extend the Service Life of Pipes.
Balingsteel Offers a Wide Range of External Coating Solutions Such as FBE, 3LPE, 3LPP, 3PE, PU, Etc.
To Protect Your Materials from Corrosion.
Internal Coating
Internal Coatings Allow Pipes to Be Installed and Operated in a Way That Reduces Surface Roughness, Improves Efficiency, And Maintains the Purity of the Fluid Being Conveyed. The Main Internal Corrosion Protection Are FBE and Cement Mortar Anti-Corrosion.
Our Coatings Come from the World’s Leading Coating Companies and Utilize Advanced Processes to Ensure That Every Internal Surface Is Protected.
Data Sheet for Linepipe
- Process of Manufacture Linepipe
- Chemical Composition for PSL 1 Linepipe
- Chemical Composition for PSL 2 Linepipe
- Tensile Tests for PSL 1 Linepipe
- Tensile Tests for PSL 2 Linepipe
- CVN Absorbed Energy Requirements
- Tolerances for Diameter and Out-of-roundness
- Tolerances for Wall Thickness
Process of Manufacture Linepipe
Type of Pipe or Pipe End | PSL 1 Pipe Grade a | PSL 2 Pipe Grade a | ||||||
L175 or A25 b | L175P or A25P b | L210 or A | L245 or B | L290 or X42 to L485 or X70 | L245 or B to L555 or X80 | > L555 or X80 to L690 or X100 | > L690 or X100 to L830 or X120 | |
Type of Pipe | ||||||||
SMLS | X | X | X | X | X | X | X | — |
CW | X | X | — | — | — | — | — | — |
LFW | X | — | X | X | X | — | — | — |
HFW | X | — | X | X | X | X | — | — |
LW | — | — | — | — | X | — | — | — |
SAWL c | — | — | X | X | X | X | X | X |
SAWH d | — | — | X | X | X | X | X | X |
COWL c | — | — | X | X | X | X | — | — |
COWH d | — | — | X | X | X | X | — | — |
Type of Pipe End | ||||||||
Belled end e | X | — | X | X | X | — | — | — |
Plain end | X | — | X | X | X | X | X | X |
Plain end for special coupling | X | — | X | X | — | — | — | — |
Threaded end f | X | X | X | X | — | — | — | — |
a Intermediate grades are available if agreed, but limited to grades higher than Grade L290 or X42. b Grades L175, L175P, A25, and A25P are limited to pipe with D ≤141.3 mm (5.563 in.). c Double-seam pipe is available if agreed, but limited to pipe with D ≥ 914 mm (36.000 in.). d Helical seam pipe is limited to pipe with D ≥ 114.3 mm (4.500 in.). e Belled-end pipe is limited to pipe with D ≤ 219.1 mm (8.625 in.) and t ≤ 3.6 mm (0.141 in.). f Threaded-end pipe is limited to SMLS and longitudinal seam welded pipe with D ≤ 508 mm (20.000 in.). |
Chemical Composition for PSL 1 Linepipe
Steel Grade (Steel Name) | Mass Fraction, Based on Heat and Product Analyses a,g % | |||||||
C | Mn | P | S | V | Nb | Ti | ||
max b | max b | min | max | max | max | max | max | |
Seamless Pipe | ||||||||
L175 or A25 | 0.21 | 0.60 | — | 0.030 | 0.030 | — | — | — |
L175P or A25P | 0.21 | 0.60 | 0.045 | 0.080 | 0.030 | — | — | — |
L210 or A | 0.22 | 0.90 | — | 0.030 | 0.030 | — | — | — |
L245 or B | 0.28 | 1.20 | — | 0.030 | 0.030 | c,d | c,d | d |
L290 or X42 | 0.28 | 1.30 | — | 0.030 | 0.030 | d | d | d |
L320 or X46 | 0.28 | 1.40 | — | 0.030 | 0.030 | d | d | d |
L360 or X52 | 0.28 | 1.40 | — | 0.030 | 0.030 | d | d | d |
L390 or X56 | 0.28 | 1.40 | — | 0.030 | 0.030 | d | d | d |
L415 or X60 | 0.28 e | 1.40 e | — | 0.030 | 0.030 | f | f | f |
L450 or X65 | 0.28 e | 1.40 e | — | 0.030 | 0.030 | f | f | f |
L485 or X70 | 0.28 e | 1.40 e | — | 0.030 | 0.030 | f | f | f |
Welded Pipe | ||||||||
L175 or A25 | 0.21 | 0.60 | — | 0.030 | 0.030 | — | — | — |
L175P or A25P | 0.21 | 0.60 | 0.045 | 0.080 | 0.030 | — | — | — |
L210 or A | 0.22 | 0.90 | — | 0.030 | 0.030 | — | — | — |
L245 or B | 0.26 | 1.20 | — | 0.030 | 0.030 | c,d | c,d | d |
L290 or X42 | 0.26 | 1.30 | — | 0.030 | 0.030 | d | d | d |
L320 or X46 | 0.26 | 1.40 | — | 0.030 | 0.030 | d | d | d |
L360 or X52 | 0.26 | 1.40 | — | 0.030 | 0.030 | d | d | d |
L390 or X56 | 0.26 | 1.40 | — | 0.030 | 0.030 | d | d | d |
L415 or X60 | 0.26 e | 1.40 e | — | 0.030 | 0.030 | f | f | f |
L450 or X65 | 0.26 e | 1.45 e | — | 0.030 | 0.030 | f | f | f |
L485 or X70 | 0.26 e | 1.65 e | — | 0.030 | 0.030 | f | f | f |
a Cu ≤ 0.50 %; Ni ≤ 0.50 %; Cr ≤ 0.50 % and Mo ≤ 0.15 %. b For each reduction of 0.01 % below the specified maximum concentration for carbon, an increase of 0.05 % above the specified maximum concentration for Mn is permissible, up to a maximum of 1.65 % for grades ≥ L245 or B, but ≤ L360 or X52; up to a maximum of 1.75 % for grades > L360 or X52, but < L485 or X70; and up to a maximum of 2.00 % for Grade L485 or X70. c Unless otherwise agreed, Nb + V ≤ 0.06 %. d Nb + V + Ti ≤ 0.15 %. e Unless otherwise agreed. f Unless otherwise agreed, Nb + V + Ti ≤ 0.15 %. g No deliberate addition of B is permitted and the residual B ≤ 0.001 %. |
Chemical Composition for PSL 2 Linepipe
Steel Grade (Steel Name) | Mass Fraction, Based on Heat and Product Analyses % max | Carbon Equivalent a % max | |||||||||
C b | Si | Mn b | P | S | V | Nb | Ti | Other | CEIIW | CEPcm | |
Seamless and Welded Pipe | |||||||||||
L245R or BR | 0.24 | 0.40 | 1.20 | 0.025 | 0.015 | c | c | 0.04 | e,l | 0.43 | 0.25 |
L290R or X42R | 0.24 | 0.40 | 1.20 | 0.025 | 0.015 | 0.06 | 0.05 | 0.04 | e,l | 0.43 | 0.25 |
L245N or BN | 0.24 | 0.40 | 1.20 | 0.025 | 0.015 | c | c | 0.04 | e,l | 0.43 | 0.25 |
L290N or X42N | 0.24 | 0.40 | 1.20 | 0.025 | 0.015 | 0.06 | 0.05 | 0.04 | e,l | 0.43 | 0.25 |
L320N or X46N | 0.24 | 0.40 | 1.40 | 0.025 | 0.015 | 0.07 | 0.05 | 0.04 | d,e,l | 0.43 | 0.25 |
L360N or X52N | 0.24 | 0.45 | 1.40 | 0.025 | 0.015 | 0.10 | 0.05 | 0.04 | d,e,l | 0.43 | 0.25 |
L390N or X56N | 0.24 | 0.45 | 1.40 | 0.025 | 0.015 | 0.10 f | 0.05 | 0.04 | d,e,l | 0.43 | 0.25 |
L415N or X60N | 0.24 f | 0.45 f | 1.40 f | 0.025 | 0.015 | 0.10 f | 0.05 f | 0.04 f | g,h,l | As agreed | |
L245Q or BQ | 0.18 | 0.45 | 1.40 | 0.025 | 0.015 | 0.05 | 0.05 | 0.04 | e,l | 0.43 | 0.25 |
L290Q or X42Q | 0.18 | 0.45 | 1.40 | 0.025 | 0.015 | 0.05 | 0.05 | 0.04 | e,l | 0.43 | 0.25 |
L320Q or X46Q | 0.18 | 0.45 | 1.40 | 0.025 | 0.015 | 0.05 | 0.05 | 0.04 | e,l | 0.43 | 0.25 |
L360Q or X52Q | 0.18 | 0.45 | 1.50 | 0.025 | 0.015 | 0.05 | 0.05 | 0.04 | e,l | 0.43 | 0.25 |
L390Q or X56Q | 0.18 | 0.45 | 1.50 | 0.025 | 0.015 | 0.07 | 0.05 | 0.04 | d,e,l | 0.43 | 0.25 |
L415Q or X60Q | 0.18 f | 0.45 f | 1.70 f | 0.025 | 0.015 | g | g | g | h,l | 0.43 | 0.25 |
L450Q or X65Q | 0.18 f | 0.45 f | 1.70 f | 0.025 | 0.015 | g | g | g | h,l | 0.43 | 0.25 |
L485Q or X70Q | 0.18 f | 0.45 f | 1.80 f | 0.025 | 0.015 | g | g | g | h,l | 0.43 | 0.25 |
L555Q or X80Q | 0.18 f | 0.45 f | 1.90 f | 0.025 | 0.015 | g | g | g | i,j | As agreed | |
L625Q or X90Q | 0.16 f | 0.45 f | 1.90 | 0.020 | 0.010 | g | g | g | j,k | As agreed | |
L690Q or X100Q | 0.16 f | 0.45 f | 1.90 | 0.020 | 0.010 | g | g | g | j,k | As agreed | |
Welded Pipe | |||||||||||
L245M or BM | 0.22 | 0.45 | 1.20 | 0.025 | 0.015 | 0.05 | 0.05 | 0.04 | e,l | 0.43 | 0.25 |
L290M or X42M | 0.22 | 0.45 | 1.30 | 0.025 | 0.015 | 0.05 | 0.05 | 0.04 | e,l | 0.43 | 0.25 |
L320M or X46M | 0.22 | 0.45 | 1.30 | 0.025 | 0.015 | 0.05 | 0.05 | 0.04 | e,l | 0.43 | 0.25 |
L360M or X52M | 0.22 | 0.45 | 1.40 | 0.025 | 0.015 | d | d | d | e,l | 0.43 | 0.25 |
L390M or X56M | 0.22 | 0.45 | 1.40 | 0.025 | 0.015 | d | d | d | e,l | 0.43 | 0.25 |
L415M or X60M | 0.12 f | 0.45 f | 1.60 f | 0.025 | 0.015 | g | g | g | h,l | 0.43 | 0.25 |
L450M or X65M | 0.12 f | 0.45 f | 1.60 f | 0.025 | 0.015 | g | g | g | h,l | 0.43 | 0.25 |
L485M or X70M | 0.12 f | 0.45 f | 1.70 f | 0.025 | 0.015 | g | g | g | h,l | 0.43 | 0.25 |
L555M or X80M | 0.12 f | 0.45 f | 1.85 f | 0.025 | 0.015 | g | g | g | i,l | 0.43 f | 0.25 |
L625M or X90M | 0.10 | 0.55 f | 2.10 f | 0.020 | 0.010 | g | g | g | i,l | ― | 0.25 |
L690M or X100M | 0.10 | 0.55 f | 2.10 f | 0.020 | 0.010 | g | g | g | i,j | 0.25 | |
L830M or X120M | 0.10 | 0.55 f | 2.10 f | 0.020 | 0.010 | g | g | g | i,j | 0.25 | |
a Based on product analysis, for seamless pipe with t > 20.0 mm (0.787 in.), the CE limits shall be as agreed; the CEIIW limits apply if C > 0.12 % and the CEPcm limits apply if C ≤ 0.12 %. b For each reduction of 0.01 % below the specified maximum for C, an increase of 0.05 % above the specified maximum for Mn is permissible, up to a maximum of 1.65 % for grades ≥ L245 or B, but ≤ L360 or X52; up to a maximum of 1.75 % for grades > L360 or X52, but < L485 or X70; up to a maximum of 2.00 % for grades ≥ L485 or X70, but ≤ L555 or X80; and up to a maximum of 2.20 % for grades > L555 or X80. c Unless otherwise agreed, Nb + V ≤ 0.06 %. d Nb + V + Ti ≤ 0.15 %. e Unless otherwise agreed, Cu ≤ 0.50 %; Ni ≤ 0.30 %; Cr ≤ 0.30 % and Mo ≤ 0.15 %. f Unless otherwise agreed. g Unless otherwise agreed, Nb + V + Ti ≤ 0.15 %. h Unless otherwise agreed, Cu ≤ 0.50 %; Ni ≤ 0.50 %; Cr ≤ 0.50 % and Mo ≤ 0.50 %. i Unless otherwise agreed, Cu ≤ 0.50 %; Ni ≤ 1.00 %; Cr ≤ 0.50 % and Mo ≤ 0.50 %. j B ≤ 0.004 %. k Unless otherwise agreed, Cu ≤ 0.50 %; Ni ≤ 1.00 %; Cr ≤ 0.55 % and Mo ≤ 0.80 %. l For PSL 2 pipe grades except those grades to which footnote j) already applies, the following applies: unless otherwise agreed no intentional addition of B is permitted and residual B ≤ 0.001 %. |
Tensile Tests for PSL 1 Linepipe
Pipe Grade | Pipe Body of Seamless and Welded Pipe | Weld Seam of EW, LW, SAW, and COW Pipe | ||
Yield Strength a
Rt0.5 MPa (psi) | Tensile Strength a
Rm MPa (psi) | Elongation (on 50 mm or 2 in.) Af % | Tensile Strength b
Rm MPa (psi) | |
min | min | min | min | |
L175 or A25 | 175 (25,400) | 310 (45,000) | c | 310 (45,000) |
L175P or A25P | 175 (25,400) | 310 (45,000) | c | 310 (45,000) |
L210 or A | 210 (30,500) | 335 (48,600) | c | 335 (48,600) |
L245 or B | 245 (35,500) | 415 (60,200) | c | 415 (60,200) |
L290 or X42 | 290 (42,100) | 415 (60,200) | c | 415 (60,200) |
L320 or X46 | 320 (46,400) | 435 (63,100) | c | 435 (63,100) |
L360 or X52 | 360 (52,200) | 460 (66,700) | c | 460 (66,700) |
L390 or X56 | 390 (56,600) | 490 (71,100) | c | 490 (71,100) |
L415 or X60 | 415 (60,200) | 520 (75,400) | c | 520 (75,400) |
L450 or X65 | 450 (65,300) | 535 (77,600) | c | 535 (77,600) |
L485 or X70 | 485 (70,300) | 570 (82,700) | c | 570 (82,700) |
Tensile Tests for PSL 2 Linepipe
Pipe Grade | Pipe Body of Seamless and Welded Pipe | Weld Seam of HFW, SAW and COW Pipe | |||||
Yield Strength a
Rt0.5 MPa (psi) | Tensile Strength a
Rm MPa (psi) | Ratio a,c
Rt0.5/Rm | Elongation (on 50 mm or 2 in.) Af % | Tensile Strength d
Rm MPa (psi) | |||
min | max | min | max | max | min | min | |
L245R or BR L245N or BN L245Q or BQ L245M or BM | 245 (35,500) | 450 (65,300) e | 415 (60,200) | 655 (95,000) | 0.93 |
f | 415 (60,200) |
L290R or X42R L290N or X42N L290Q or X42Q L290M or X42M | 290 (42,100) | 495 (71,800) | 415 (60,200) | 655 (95,000) | 0.93 |
f | 415 (60,200) |
L320N or X46N L320Q or X46Q L320M or X46M | 320 (46,400) | 525 (76,100) | 435 (63,100) | 655 (95,000) | 0.93 | f | 435 (63,100) |
L360N or X52N L360Q or X52Q L360M or X52M | 360 (52,200) | 530 (76,900) | 460 (66,700) | 760 (110,200) | 0.93 | f | 460 (66,700) |
L390N or X56N L390Q or X56Q L390M or X56M | 390 (56,600) | 545 (79,000) | 490 (71,100) | 760 (110,200) | 0.93 | f | 490 (71,100) |
L415N or X60N L415Q or X60Q L415M or X60M | 415 (60,200) | 565 (81,900) | 520 (75,400) | 760 (110,200) | 0.93 | f | 520 (75,400) |
L450Q or X65Q L450M or X65M | 450 (65,300) | 600 (87,000) | 535 (77,600) | 760 (110,200) | 0.93 | f | 535 (77,600) |
L485Q or X70Q L485M or X70M | 485 (70,300) | 635 (92,100) | 570 (82,700) | 760 (110,200) | 0.93 | f | 570 (82,700) |
L555Q or X80Q L555M or X80M | 555 (80,500) | 705 (102,300) | 625 (90,600) | 825 (119,700) | 0.93 | f | 625 (90,600) |
L625M or X90M | 625 (90,600) | 775 (112,400) | 695 (100,800) | 915 (132,700) | 0.95 | f | 695 (100,800) |
L625Q or X90Q | 625 (90,600) | 775 (112,400) | 695 (100,800) | 915 (132,700) | 0.97 g | f | ― |
L690M or X100M | 690 (100,100) b | 840 (121,800) b | 760 (110,200) | 990 (143,600) | 0.97 h | f | 760 (110,200) |
L690Q or X100Q | 690 (100,100) b | 840 (121,800) b | 760 (110,200) | 990 (143,600) | 0.97 h | f | ― |
L830M or X120M | 830 (120,400) b | 1050 (152,300) b | 915 (132,700) | 1145 (166,100) | 0.99 h | f | 915 (132,700) |
CVN Absorbed Energy Requirements
Specified Outside Diameter | Full-size CVN Absorbed Energy min | ||||||
D | KV | ||||||
mm (in.) | J (ft·lbf) | ||||||
Grade | |||||||
≤ L415 or X60 | > L415 or X60 to ≤ L450 or X65 | > L450 or X65 to ≤ L485 or X70 | > L485 or X70 to ≤ L555 or X80 | > L555 or X80 to ≤ L625 or X90 | > L625 or X90 to ≤ L690 or X100 | > L690 or X100 to ≤ L830 or X120 | |
≤ 508 (20.000) | 27 (20) | 27 (20) | 27 (20) | 40 (30) | 40 (30) | 40 (30) | 40 (30) |
> 508 (20.000) to 762 (30.000) | 27 (20) | 27 (20) | 27 (20) | 40 (30) | 40 (30) | 40 (30) | 40 (30) |
> 762 (30.000) to 914 (36.000) | 40 (30) | 40 (30) | 40 (30) | 40 (30) | 40 (30) | 54 (40) | 54 (40) |
> 914 (36.000) to 1219 (48.000) | 40 (30) | 40 (30) | 40 (30) | 40 (30) | 40 (30) | 54 (40) | 68 (50) |
> 1219 (48.000) to 1422 (56.000) | 40 (30) | 54 (40) | 54 (40) | 54 (40) | 54 (40) | 68 (50) | 81 (60) |
> 1422 (56.000) to 2134 (84.000) | 40 (30) | 54 (40) | 68 (50) | 68 (50) | 81 (60) | 95 (70) | 108 (80) |
Tolerances for Diameter and Out-of-roundness
Specified Outside Diameter D mm (in.) | Diameter Tolerances d mm (in.) | Out-of-roundness Tolerances mm (in.) | ||||
Pipe Except the End a | Pipe End a,b,c | Pipe Except the End a | Pipe End a,b,c | |||
SMLS Pipe | Welded Pipe | SMLS Pipe | Welded Pipe | |||
< 60.3 (2.375) | -0.8 (0.031) to +0.4 (0.016) | –0.8 (0.031) to +0.4 (0.016) | 1.2 (0.048) | 0.9 (0.036) | ||
≥ 60.3 (2.375) to 168.3 (6.625) |
±0.0075D |
-0.4 (0.016) to +1.6 (0.063) | 0.020D for D £ 75 ; t by agreement for D > 75 t | 0.015D for D £ 75 ; t by agreement for D > 75 t | ||
> 168.3 (6.625) to 610 (24.000) | ±0.0075D | ±0.0075D, but maximum of ±3.2 (0.125) | ±0.005D, but maximum of ±1.6 (0.063) | 0.020D | 0.015D | |
> 610 (24.000) to 1422 (56.000) |
±0.01D |
±0.005D, but maximum of ±4.0 (0.160) |
±2.0 (0.079) |
±1.6 (0.063) | 0.015D, but maximum of 15 (0.6) for D £ 75 ; t by agreement for D > 75 t | 0.01D, but maximum of 13 (0.5) for D £ 75 ; t by agreement for D > 75 t |
> 1422 (56.000) | As agreed | |||||
a The pipe end includes a length of 100 mm (4.0 in.) at each of the pipe extremities. b For SMLS pipe, the tolerances apply for t ≤ 25.0 mm (0.984 in.), and the tolerances for thicker pipe shall be as agreed. c For expanded pipe with D ≥ 219.1 mm (8.625 in.) and for nonexpanded pipe, the diameter tolerance and the out-of-roundness tolerance may be determined using the calculated inside diameter (the specified outside diameter minus two times the specified wall thickness) or measured inside diameter rather than the specified outside diameter (see 10.2.8.3). d For determining compliance to diameter tolerances, the pipe diameter is defined as the circumference of the pipe in any circumferential plane divided by pi (π). |
Tolerances for Wall Thickness
Wall Thickness t mm (in.) | Tolerances a
mm (in.) |
SMLS Pipe b | |
≤ 4.0 (0.157) | +0.6 (0.024) -0.5 (0.020) |
> 4.0 (0.157) to < 25.0 (0.984) | +0.150t –0.125t |
≥ 25.0 (0.984) | +3.7 (0.146) or +0.1t, whichever is the greater -3.0 (0.120) or –0.1t, whichever is the greater |
Welded Pipe c,d | |
≤ 5.0 (0.197) | ± 0.5 (0.020) |
> 5.0 (0.197) to < 15.0 (0.591) | ± 0.1t |
≥ 15.0 (0.591) | ± 1.5 (0.060) |
a If the purchase order specifies a minus tolerance for wall thickness smaller than the applicable value given in this table, the plus tolerance for wall thickness shall be increased by an amount sufficient to maintain the applicable tolerance range. b For pipe with D ≥ 355.6 mm (14.000 in.) and t ≥ 25.0 mm (0.984 in.), the wall thickness tolerance locally may exceed the plus tolerance for wall thickness by an additional 0.05t, provided that the plus tolerance for mass (see 9.14) is not exceeded. c The plus tolerance for wall thickness does not apply to the weld area. d See 9.13.2 for additional restrictions. |
PSL 1 and PSL 2 Are Two Different Grades Within the API Standard, With PSL 2 Having More Testing Requirements, And PSL 2 Piping Being Weighed, So Wall Thickness Control Is More Uniform and Stringent.
OCTG Caliber Wall Thickness and Linepipe Are Not the Same, OCTG According to the Inch Caliber Calculation, Linepipe Follows ANSI B36.10M and ANSI B36.19M Table Standards.
We Have Belled End,Plain End,Coupling,Flanged End and Threaded End.
Size Chart
SPECIFICATION STANDARD (LINEPIPE) | ||||||||
Normal Diameter | OD(MM) | WT(MM) | ||||||
A(MM) | B(INCH) | ASME | STD | SCH40 | SCH40S | XS | SCH80 | SCH160 |
6 | 1/8″ | 10.29 | 1.73 | 1.73 | 1.73 | 2.41 | 2.41 | |
8 | 1/4″ | 13.72 | 2.24 | 2.24 | 2.24 | 3.02 | 3.02 | |
10 | 3/8″ | 17.14 | 2.31 | 2.31 | 2.31 | 3.2 | 3.2 | |
15 | 1/2″ | 21.34 | 2.77 | 2.77 | 2.77 | 3.73 | 3.73 | 4.78 |
20 | 3/4″ | 26.67 | 2.87 | 2.87 | 2.87 | 3.91 | 3.91 | 5.56 |
25 | 1″ | 33.40 | 3.38 | 3.38 | 3.38 | 4.55 | 4.55 | 6.35 |
32 | 1.1/4″ | 42.16 | 3.56 | 3.56 | 3.56 | 4.85 | 4.85 | 6.35 |
40 | 1.1/2″ | 48.26 | 3.68 | 3.68 | 3.68 | 5.08 | 5.08 | 7.14 |
50 | 2″ | 60.32 | 3.91 | 3.91 | 3.91 | 5.54 | 5.54 | 8.74 |
65 | 2.1/2″ | 73.02 | 5.16 | 5.16 | 5.16 | 7.01 | 7.01 | 9.53 |
80 | 3″ | 88.90 | 5.49 | 5.49 | 5.49 | 7.62 | 7.62 | 11.13 |
90 | 3.1/2″ | 101.60 | 5.74 | 5.74 | 5.74 | 8.08 | 8.08 | |
100 | 4″ | 114.30 | 6.02 | 6.02 | 6.02 | 8.56 | 8.56 | 13.49 |
125 | 5″ | 141.30 | 6.55 | 6.55 | 6.55 | 9.53 | 9.53 | 15.88 |
150 | 6″ | 168.28 | 7.11 | 7.11 | 7.11 | 10.97 | 10.97 | 18.26 |
200 | 8″ | 219.08 | 8.18 | 8.18 | 8.18 | 12.7 | 12.7 | 23.01 |
250 | 10″ | 273.05 | 9.27 | 9.27 | 9.27 | 12.7 | 15.09 | 28.58 |
300 | 12″ | 323.85 | 9.53 | 10.31 | 9.53 | 12.7 | 17.48 | 33.32 |
350 | 14″ | 355.60 | 9.53 | 11.13 | 9.53 | 12.7 | 19.05 | 35.71 |
400 | 16″ | 406.40 | 9.53 | 12.7 | 9.53 | 12.7 | 21.44 | 40.49 |
450 | 18″ | 457.20 | 9.53 | 14.27 | 9.53 | 12.7 | 23.83 | 45.24 |
500 | 20″ | 508.00 | 9.53 | 15.09 | 9.53 | 12.7 | 26.19 | 50.01 |
550 | 22″ | 558.80 | 9.53 | 12.7 | 28.58 | 53.98 | ||
600 | 24″ | 609.60 | 9.53 | 17.48 | 9.53 | 12.7 | 30.96 | 59.54 |
650 | 26″ | 660.40 | 9.53 | 12.7 | ||||
700 | 28″ | 711.20 | 9.53 | 12.7 | ||||
750 | 30″ | 762.00 | 9.53 | 12.7 | ||||
800 | 32″ | 812.00 | 9.53 | 17.48 | 12.7 | |||
850 | 34″ | 863.60 | 9.53 | 17.48 | 12.7 | |||
900 | 36″ | 914.40 | 9.53 | 19.05 | 12.7 | |||
950 | 38″ | 965.20 | 9.53 | 12.7 | ||||
1000 | 40″ | 1016.00 | 9.53 | 12.7 | ||||
1050 | 42″ | 1066.80 | 9.53 | 12.7 | ||||
1100 | 44″ | 1117.60 | 9.53 | 12.7 | ||||
1150 | 46″ | 1168.40 | 9.53 | 12.7 | ||||
1200 | 48″ | 1219.20 | 9.53 | 12.7 | ||||
1300 | 52″ | 1320.80 | 9.53 | 12.7 | ||||
1350 | 54″ | 1371.60 | 9.53 | 12.7 | ||||
1400 | 56″ | 1422.40 | 9.53 | 12.7 | ||||
1500 | 60″ | 1524.00 | 9.53 | 12.7 | ||||
1600 | 64″ | 1625.00 | 9.53 | 12.7 | ||||
1700 | 68″ | 1727.20 | 9.53 | 12.7 | ||||
1800 | 72″ | 1828.80 | 9.53 | 12.7 | ||||
1900 | 76″ | 1930.40 | 9.53 | 12.7 | ||||
2000 | 80″ | 2032.00 | 9.53 | 12.7 |