Specifications: diameter: 320 to 127 mm thickness: 0.4 to 12.7 mm Length: 6 m above, and, in accordance with customer demand, supply and other specifications of steel pipe

High-pressure cylinder pipe


High-pressure cylinder pipe:  

Standard:

The GB18248 - Chinese national standards
 ASTM A519 - Materials and Society for Testing Standard
Uses:
With hot-rolled large diameter seamless steel pipe used in the manufacture of cylinders.
Typical uses:
Oxygen bottles, bottles of hydrogen gas bottles, accumulator bottles.
Production of steel grades:
34Mn2V , 37Mn1 , 37Mn2 , 3OCrMo-- 34CrMo4 , 35CrMo
Dimensional tolerances :
Steel pipe types
Outer diameter (D)
Wall thickness (S)
Hot-rolled tubes
Pipe diameter (mm)
Allow deviation(mm)
Pipe wall thickness(mm)
Allow deviation(mm)
φ559
± 1.0 %
17.0
- 0 % + 25

Mechanical properties:
Standard
Trademark
Tensile strength (MPa )
Yield strength (MPa )
Yield ratio
Elongation (%)
Impact energy Akv (J )
Hardness
Q/321088HGB3
4130X
725 to 865
485 to 735
≤ 0.85
≥ 20
- 40 ° C ≥ 40
195 to 269HB
Chemical Constituents :
Standard
Trademark
Chemical Composition (%)
C
Si
Mn
P
S
Cr
Ni
Cu
Mo
V
Q/321088HGB3
4130X
0.25 ~0.35
0.15 ~0.35
0.40 to0.90
≤ 0.020
≤ 0.010
0.80 ~1.10
≤ 0.25
≤ 0.
 

 

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