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Hot Galvanized Pipes with Thread Coupling

  

 

Standard of implementation: ASTM A53/A53M/ASME SA-53/ SA-53M

Application: used in the pressure and pressure parts and general purpose steam, water, gas and air line.

Major steel grade: A53A 、A53B and so on(After consultation, can also provide other special grade of steel pipe)

Chemical composition and mechanical properties:

Standard

Steel grade

Chemical constituents (%)

C

Mn

P

S

Cu

Ni

Cr

Mo

V

ASTMA53/ASMESA53

A

0.25

0.95

0.050

0.045

0.40

0.40

0.40

0.15

0.08

B

0.30

1.20

0.050

0.045

0.40

0.40

0.40

0.15

0.08

Mechanical properties

Tensile strength (MPa)

Yield strength (MPa)

A

≥ 330

≥ 205

B

≥ 415

≥ 240

Note: the five elements of Ni, Cr, Cu, Mo, V are not greater than 1%

Dimensional tolerance:

Type of steel tube

Outside diameter(D

Wall thickness(S

Cold drawn pipe

Outside diameter

Allowable tolerance

Outside diameter

Allowable tolerance

3050

+0.3%

25

+10%

50325

+0.8%

Hot rolling tube

76168

+1.0%

25

-10%+12.5%