After years of pioneering and enterprising, our company has built a modern production line of Cold Drawn Tube, Round Chrome Bar, Seamless Cold Drawn. There are multiple standardized factories and inventory centers that belong to our company, service and sales outlets in different regions. Our products have won praise from customers worldwide. We continue to keep increasing and perfecting our solutions and service. 'Reputation To start with, Buyers Foremost.
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
Weight
Steel pipes shall be delivered in actual weight. According to the requirements of the purchaser, it is negotiated between the supplier and the buyer, and is indicated in the contract, and can also be delivered according to the theoretical weight.
Approximate Map
GB 18248 | JIS G 3429 | ISO 11120 | EN 10297-1 | ASTM A372 | DOT 49CFR§178.37 |
37Mn | STH11 STH12 | / | 38Mn6 | Grade C | Inter-mediate manganese |
34Mn2V | STH11 STH12 | / | / | / | / |
30CrMo | STH21 | GroupⅡ | 30CrMo4 | Grade E | 4130X |
35CrMo | STH22 | GroupⅡ | 34CrMo4 | / | / |
34CrMo4 | STH22 | GroupⅡ | 34CrMo4 | / | / |
30CrMnSiA | / | / | / | / | / |
Cold drawn seamless tubes used for long tube trailer
1 | Φ540*7.8 |
2 | Φ540*9.3 |
3 | Φ559*7.8 |
4 | Φ559*11.0 |
5 | Φ559*16.8 |
6 | Φ559*17.6 |
7 | Φ559*23.4 |
8 | Φ610*15.7 |
9 | Φ660*8.3 |
10 | Φ660*19.8 |
11 | Φ711*21.5 |
12 | Φ711*23.5 |
13 | Φ715*21.5 |
14 | Φ720*21.8 |
Size Range
Nominal outer diameter (O.D.) Φ60 ~ 210mm; wall thickness (W.T.) 2.4 ~ 5.0mm;
Nominal outer diameter (O.D.) Φ210 ~ 356mm; wall thickness (W.T.) 4.5 ~ 7.0mm;
Nominal outer diameter (O.D.) Φ370 ~ 457mm; wall thickness (W.T.) 5.5 ~ 25mm;
Nominal outer diameter (O.D.) Φ480 ~ 730 mm; wall thickness (W.T.) 8.0 ~ 30.0mm
About Us

Along with providing you with a superior quality Precision Seamless Alloy Steel Pipe 35CrMo, 40crmo, 42CrMo, 42CrMo4 with advanced technology, we also furnish you with customized services according to your needs. We are going to serve you with all sincerity! Based on the industry's strategy of specialization, scale and total cost leadership, we always adhere to the service principle of 'quality as life and innovation as vitality'.
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