Linepipe Supplier In China

Steel Grade (Steel Name)

%

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 %.

% max

% max

―

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 %.

Pipe Grade

Pipe Body of Seamless and Welded Pipe

Pipe

Rt0.5

MPa (psi)

Rm

MPa (psi)

(on 50 mm or 2 in.)

Af

%

Rm

MPa (psi)

Pipe Grade

Pipe Body of Seamless and Welded Pipe

COW Pipe

Rt0.5

MPa (psi)

Rm

MPa (psi)

Rt0.5/Rm

(on 50 mm

or 2 in.)

Af

%

Strength d

Rm

MPa (psi)

L245M or BM

245

(35,500)

450

(65,300) e

415

(60,200)

655

(95,000)

0.93

f

415

(60,200)

L290M or X42M

290

(42,100)

495

(71,800)

415

(60,200)

655

(95,000)

0.93

f

415

(60,200)

(46,400)

(76,100)

(63,100)

(95,000)

0.93

f

(63,100)

(52,200)

(76,900)

(66,700)

(110,200)

0.93

f

(66,700)

(56,600)

(79,000)

(71,100)

(110,200)

0.93

f

(71,100)

(60,200)

(81,900)

(75,400)

(110,200)

0.93

f

(75,400)

(65,300)

(87,000)

(77,600)

(110,200)

(77,600)

(70,300)

(92,100)

(82,700)

(110,200)

(82,700)

(80,500)

(102,300)

(90,600)

(119,700)

(90,600)

(90,600)

(112,400)

(100,800)

(132,700)

(100,800)

(90,600)

(112,400)

(100,800)

(132,700)

(100,100) b

(121,800) b

(110,200)

(143,600)

(110,200)

(100,100) b

(121,800) b

(110,200)

(143,600)

(120,400) b

(152,300) b

(132,700)

(166,100)

(132,700)

min

≤ L415 or X60

≤ L450 or X65

≤ L485 or X70

≤ L555 or X80

≤ L625 or X90

≤ L690 or X100

≤ L830 or X120

762 (30.000)

914 (36.000)

1219 (48.000)

1422 (56.000)

2134 (84.000)

D

mm (in.)

mm (in.)

mm (in.)

≥ 60.3 (2.375) to

168.3 (6.625)

±0.0075D

-0.4 (0.016) to +1.6 (0.063)

D £ 75 ;

t

by agreement

for D > 75

t

D £ 75 ;

t

by agreement

for D > 75

t

610 (24.000)

±0.0075D

±3.2 (0.125)

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)

but maximum of 15 (0.6)

for  D  £ 75 ;

t

by agreement

for D > 75

t

but maximum of 13 (0.5)

for  D  £ 75 ;

t

by agreement

for D > 75

t

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).

t

mm (in.)

mm (in.)

≤ 4.0 (0.157)

-0.5 (0.020)

> 4.0 (0.157) to < 25.0 (0.984)

–0.125t

≥ 25.0 (0.984)

-3.0 (0.120) or –0.1t, whichever is the greater

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.