1. ChangZeng steel tubing has been strictly tested. It has passed through the environmental testing for humidity, vibration, susceptibility, drop, bump and shock. It is the best for welding, machining or other needs
2. Shanghai ChangZeng Metal Co., Ltd. is perceived as more vibrant and engaged generators of steel tubing with commercial value than their counterparts. It is highly resistant to mechanical and chemical degradation
3. We have quality assurance to ensure the high quality of this product. It has served more than 600 foreign customers
4. The product has extremely stable performance, which can be used for a long time without damage. Its heat treatment includes annealed, quenched, tempered, etc
1. Based in China, Shanghai ChangZeng Metal Co., Ltd. is a leading manufacturer and supplier of a commendable range of products including round steel tubing .
2. Shanghai ChangZeng Metal Co., Ltd. is the exact company when you need high quality steel tubing .
3. We firmly believe in the basic tenet that steel square pipe . Contact us!