STEEL PIPE STANDARDS

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ASTM A381

Date:2022-11-23View:234Tags:OCTG pipe,Seamless steel pipe manufacturer,Casing and tubing

ASTM A381 Standard Specification for Metal-Arc-Welded Steel Pipe for Use With High-Pressure Transmission Systems.This specification covers  straight seam, double-submerged-arc-welded steel pipe suitable for high-pressure service, 16 in. (406 mm) and larger in outside diameter, with wall thicknesses from 5 ⁄ 16 to 1 1 ⁄ 2 in. (7.9 to 38mm). The pipe is intended for fabrication of fittings and accessories for compressor or pump-station piping. Pipe ordered to this specif i cation shall be suitable for bending,flanging (vastoning), corrugating, and similar operations.


Chemical Composition

Element

Compostion,%,max

Ladle

Check

C

0.26

0.3

Mn

1.4

1.5

P

0.025

0.03

S

0.025

0.025


Mechanical Properties

Class

Yield Strength

Tensile Strength

Elongation in 2in.(50.8mm)

min,Mpa

min,Mpa

min,%

Y35

240

415

26

Y42

290

415

25

Y46

316

435

23

Y48

330

430

21

Y50

345

440

21

Y52

360

455

20

Y56

385

490

20

Y60

415

515

20

Y65

450

535

20

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