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High Pressure Vessel Pipe,Gas Cylinder Pipe

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High Pressure Vessel Pipe,Gas Cylinder Pipe

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GB 18248--------- China National Standard

JIS G3429-------- Japanese Industrial Standards

Purpose:
For the manufacture of pressure vessels, gas cylinders seamless.
High Pressure Gas Cylinder Pipe
The main production steel grades:
37Mn、34Mn2V、30CrMo、35CrMo、STH11、STH12、STH21、STH22等。

Mechanical properties:

Standard	Grade	Tensile strength (MPa)	Yield strength (MPa)	Elongation (%)
GB18248	37Mn	≥750	≥630	≥16
	34Mn2V	≥745	≥530	≥16
	30CrMo	≥930	≥785	≥12
	35CrMo	≥980	≥835	≥12

Chemical composition：

Standard	model	Chemical Composition
Standard	model	C	Si	Mn	P、S	Cu	Ni	Mo	Cr	V
GB18248	37Mn	0.34~0.40	0.10~0.30	1.35~1.65	≤0.030	≤0.20	≤0.30	/	≤0.30	/
	34Mn2V	0.30~0.37	0.17~0.37	1.40~1.75	≤0.030	≤0.20	≤0.30	/	≤0.30	0.07~0.12
	30CrMo	0.26~0.34	0.17~0.37	0.40~0.70	≤0.030	≤0.20	≤0.30	0.15~0.25	0.80~1.10	/
	35CrMo	0.32~0.40	0.17~0.37	0.40~0.70	≤0.030	≤0.20	≤0.30	0.15~0.25	0.80~1.10	/
JIS G3429	STH11	≤0.50	0.10~0.35	≤1.80	≤0.035	/	/	/	/	/
	STH12	0.30~0.41	0.10~0.35	1.35~1.70	≤0.030	/	/	/	/	/
	STH21	0.25~0.35	0.15~0.35	0.40~0.90	≤0.030	/	≤0.25	0.15~0.30	0.80~1.20	/
	STH22	0.33~0.38	0.15~0.35	0.40~0.90	≤0.030	/	≤0.25	0.15~0.30	0.80~1.20	/

Honed tube for hydraulic cylinder and pneumatic cylinder

gas cylinder pipe
1.Certificate:CE
2.ID:30-400mm
3.OD:36-480mm
4.ST52,ST45

gas cylinder pipe

Production Description: ;


Standard	DIN2391 EN10305
Material	ST44 ST45 ST52 E355 STKM13C
Heat treatment	BK+S
Specification	Outer diameter(mm)	Inner diameter(mm)
	50-300mm	40-250
I.D Tolerance	H8-H9
Length	3-9m
Straightness	1/1000
ID roughness	RA 0.4micron(max)
Technology	Honed & SRB(SKIVED AND ROLLER BURNISHED )
Scope	Hydraulic cylinder tube for swivel crane, injection machine and construction machine application