Quality as the core, and we will continuously customize high-quality Oil Cylinder Rolled Tube, Hydraulic Honing Pipe, Srb Honed Tube solutions for you. Believe in ourselves, believe in our customers, our company as always with our customers, we hand in hand to create brilliance together. We regard excellent talents as the key of enterprise transformation, the foundation of production and the source of vitality.
Introduction
Gas cylinder re-industrial enterprises, fire protection, medical applications are widely used, equipment and media for the storage and release of gaseous media. The gas cylinder tube is a seamless steel tube suitable for the production of gas cylinder type high pressure vessels.
Standard
GB 18248、JIS G3429、ASTM A372、ISO 11120
Mainly produces steel pipe grades
37Mn, 34Mn2V, 30CrMo, 35CrMo, STH11, STH12, STH21, STH22 and the like.
Details
Standard | Brand | Chemical Composition | ||||||||
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 | / | |
Cold drawn seamless tubes used for Vehicle gas cylinder
No. | Specification(O.D.*W.T.) |
1 | φ279*4.7 |
2 | φ300*4.4 |
3 | φ325*4.6 |
4 | φ325*5.0 |
5 | φ356*4.8 |
6 | φ356*5.0 |
7 | φ356*5.3 |
8 | φ356*6.8 |
9 | φ406*5.6 |
10 | φ406*5.9 |
11 | φ406*6.2 |
12 | φ406*7.3 |
13 | φ406*7.8 |
14 | φ457*7.5 |
Our Production Equipment

With strong research and development capabilities, we strive to develop a number of new and practical JIS G3429 Sth21 Seamless Steel Tubes for Highpressure Gas Cylinder and constantly provide better application solutions for users. We actively explore greater marketing channels to expand our market share and explore potential business opportunities. We always adhere to the basic strategy of managing and invigorating enterprises based on the original mission and people-centered development idea.
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