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GB9948 Seamless steel pipes for petroleum cracking

Location:
Liaocheng, China ( Mainland)
Status:
New
Sample Availibility:
yes
Payment Terms:
Cash, Bank Transfer, Letter of Credit, T/T, L/C
Categories:
Home > Energy > Petroleum & Products

Product Description

Standard
GB9948 Chinese national standard
Application
Served as for furnace tubes,heat exchange tubes and pipelines in petroleum and refinery plants
Model No.of major steel tubes
10,20,15CrMo,1C2rMo,etC

Specification Scope:10-530×1.5-40

Diamensional tolerances:

Types of steel tubes

Outer diameter

Wall thickness

Cold-rolled tubes

Tube sizes(mm)

Tolerances(mm)

Tube sizes (mm)

Tolerances(mm)

3050

±0.3

≤30

±10

50219

±0.8

Standard codes

Models of steel tubes

MPa

MPa

J

HB

GB9948

10

330490

≥205

≥24

/

/

20

410550

≥245

≥21

≥39

/

15CrMo

440640

≥235

≥21

≥47

≤170

1Cr2Mo

≥390

≥175

≥22

≥92

≤179

1Cr5Mo

≥390

≥195

≥22

≥92

≤187

Chemical composition:

Standard codes

Models of steel tubes

Chemical compositions

C

Si

Mn

P

S

Cr

Mo

Ni

GB9948

10

0.070.14

0.170.37

0.350.65

≤0.035

≤0.035

≤0.15

/

≤0.25

20

0.170.24

0.170.37

0.350.65

≤0.035

≤0.035

≤0.25

/

≤0.25

15CrMo

0.120.18

0.170.37

0.400.70

≤0.035

≤0.035

0.801.10

0.400.55

≤0.30

1Cr2Mo

≤0.15

0.501.00

0.300.60

≤0.035

≤0.030

2.152.85

0.450.65

/

1Cr5Mo

≤0.15

≤0.50

≤0.60

≤0.035

≤0.030

4.006.00

0.450.60

≤0.60



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Contact Information

Company:
 Liaocheng Kaifa International Trade Co., Ltd.
Phone Number:
  86-635-8517456,2187456
Fax Number:
 86-635-8517997
 
Liaocheng Kaifa International Trade Co., Ltd.
 Shandong , China FREE
 

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