GB 18248 Gas Cylinder Tube

This standard applies to the manufacture of seamless steel tubes for gas cylinders and accumulator shell. linkun steel mainly supplying 37Mn gas bottle pipe, 30CrMo, 35CrMo and 34CrMo4 seamless steel pipe for gas cylinder tubing.

Grade: 37Mn, 34Mn2V, 30CrMo, 35CrMo, 34CrMo4, 30CrMnSiA

OD: 48 - 711mm

WT: 3.1 - 38mm

Length: 4 - 12m

Delivery Condition: Without heat treatment, Quenched + Tempered, Normalized + Tempered

Chemical Composition of Gas Cylinder Tube

Grade	C	Si	Mn	P	_Sb	P＋S	Cr	Mo	V	Ni	Cu
37Mn	0.34 - 0.40	0.10 - 0.30	1.35 - 1.75	≤ 0.020	≤ 0.020	≤ 0.030	≤0.30	－	－	≤0.30	≤0.20
34Mn2V	0.30 - 0.37	0.17 - 0.37	1.40 - 1.75	≤ 0.020	≤ 0.020	≤ 0.030	≤0.30	－	0.07 - 0.12	≤0.30	≤0.20
30CrMo	0.26 - 0.34	0.17 - 0.37	0.40 - 0.70	≤0.020	≤ 0.020	≤ 0.030	0.80 - 1.10	0.15 - 0.25	－	≤0.30	≤0.20
35CrMo	0.32 - 0.40	0.17 - 0.37	0.40 - 0.70	≤ 0.020	≤ 0.020	≤ 0.030	0.80 - 1.10	0.15 - 0.25	－	≤0.30	≤0.20
34CrMo4	0.30 - 0.37	≤0.40	0.60 - 0.90	≤ 0.020	≤ 0.020	≤ 0.030	0.90 - 1.20	0.15 - 0.30	－	≤0.30	≤0.20
30CrMnSiA	0.28 - 0.34	0.90 - 1.20	0.80 - 1.10	≤ 0.020	≤ 0.020	≤ 0.030	0.80 - 1.10	≤0.10	－	≤0.30	≤0.20

Mechanical Properties of Gas Cylinder Tube

Standard	Grade	Tensile Strength(MPa)	Yield Strength(MPa)	Elongation(%)
GB 18248	37Mn	≥750	≥630	≥16
	34Mn2V	≥745	≥530	≥16
	30CrMo	≥930	≥785	≥12
	35CrMo	≥980	≥835	≥12
	34CrMo4	≥980	≥835	≥12
	30CrMnSiA	≥1080	≥885	≥10

GNEE supplies high quality hot rolled and cold rooled seamless steel pipe for gas bottles to clients and is experienced in large size gas bottle. We stock extensive inventory of steel pipes and other pipe fittings, just let us know size and quantity of your need and we can help you find the material that is right for you. Call us today for a quote on34CrMo4 steel pipe.

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