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Product Name

Material

Standard

Specification

Application

Structure   pipe

10#      20#       45#     27SiMn
ASTM A53A,B
16Mn<q345a,b,c,d,e> 20Cr  40Cr  20CrMo  30-35CrMo  42CrMo

40Mn2   35Cr  35CrMoA

GB/T8162-2008
GB/T17396-1998
ASTM A53

∮8-1240*1-200

Apply to structure, engineering scaffolds, machining

 

Dimension tolerance:


Category

OD(D)

TH(S)

Cold drawn pipe

OD(mm)

Tolerance(mm)

TH(mm)

Tolerance(mm)

>30~50

±0.3

≤30

±10%

>50~219

±0.8%

Hot rolled pipe

>219

±1.0%

>20

±10%


Mechanical property


Standard

Grade

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

According to ASTM A53
According to ASME SA53

B

≥415

≥240

 

Chemical composition:


Standard

Grade

Chemical composition(%)

C

Si

Mn

P

S

Cu

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

0.20~0.55

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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