Seamless Steel Pipe for vessels, equipment, fittings and mechanical structures

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Seamless Steel Pipe for vessels, equipment, fittings and mechanical structures

GB/T8162 – China National Standard 
ASTM  A53 – American Society for Testing and Materials Standard ASME SA53 – American Boiler and Pressure Vessel Code

Uses: for the manufacture of seamless pipes for pipes, containers, equipment, pipe fittings and mechanical structures

Mainly produced steel pipe grades: 10, 20, 35, 45, Q345, 15CrMo, 12Cr1MoV, A53A, A53B, SA53A, SA53B, etc.

Dimensional tolerances:

Steel pipe type

Outer diameter (D)

Steel pipe wall thickness (S)

Cold drawn tube

Steel pipe outer diameter (mm)

Allowable deviation (mm)

Steel pipe wall thickness (mm)

Allowable deviation (mm)

>30~50

±0.3

≤30

±10%

>50~219

±0.8%

Hot rolled tube

>219

±1.0%

>20

±10%

 

Mechanical properties:

 

standard

Brand

Tensile strength (MPa)

Yield strength (MPa)

Elongation(%)

GB/T8162

10

≥335

≥205

≥24

20

≥390

≥245

≥20

35

≥510

≥305

≥17

45

≥590

≥335

≥14

Q345

≥490

≥325

≥21

15CrMo

≥440

≥295

≥22

12Cr1MoV

≥490

≥245

≥22

ASTM A53

ASME SA53

A

≥330

≥205

View the table of ASTM A53

View the table of ASME SA53

B

≥415

≥240

 

chemical composition:

standard

Brand

chemical composition(%)

C

Si

Mn

P

S

With

Ni

Mo

Cr

V

GB/T8162

10

0.07~0.14

0.17~0.37

0.35~0.65

≤0.035

≤0.035

≤0.25

≤0.25

/

≤0.15

/

20

0.17~0.24

0.17~0.37

0.35~0.65

≤0.035

≤0.035

≤0.25

≤0.25

/

≤0.25

/

35

0.32~0.40

0.17~0.37

0.50~0.80

≤0.035

≤0.035

≤0.25

≤0.25

/

≤0.25

/

45

0.42~0.50

0.17~0.37

0.50~0.80

≤0.035

≤0.035

≤0.25

≤0.25

/

≤0.25

/

Q345

0.12~0.20

0.20 to 0.55

1.20~1.60

≤0.035

≤0.035

≤0.25

≤0.25

/

≤0.25

/

15CrMo

0.12~0.18

0.17~0.37

0.40~0.70

≤0.035

≤0.035

≤0.25

≤0.30

0.40~0.55

0.80~1.10

/

12Cr1MoV

0.08~0.15

0.17~0.37

0.40~0.70

≤0.035

≤0.035

≤0.25

≤0.30

0.25~0.35

0.90~1.20

0.15~0.30

ASTMA53

ASMESA53

A

≤0.25

/

≤0.95

≤0.05

≤0.06

≤0.40

≤0.40

≤0.15

≤0.40

≤0.08

B

≤0.30

/

≤1.20

≤0.05

≤0.06

≤0.40

≤0.40

≤0.15

≤0.40

≤0.08

 

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