Manufacture high quality Chrome Plated Bar For Hydraulic Cylinder, Induction Chrome Bar, Turning roll to meet customer's demand is our final target. We offer competitive solutions without compromising on quality. We are unremittingly committed to business development and technological innovation, the pursuit of comprehensive enterprise quality management, and we sincerely create a better future with our customers hand in hand. Most problems between global suppliers and clients are due to poor communication.
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

We have never stopped on the road of pursuing excellent product quality of the 4130X Big Caliber Seamless Steel Tube for Gas Cylinders and technological innovation. What we rely on is not only the company's strong technology and research and development strength, but also our sincere and sincere service to customers. The company's strict, scientific management, continuous innovation and superior product performance, and satisfactory service have earned a certain reputation in the market.
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