1. The main body of steel pipes produced by Shanghai ChangZeng Metal Co., Ltd. is made from advanced rectangular steel tubing materials. It can be cold rolled to be smoother and have more precise dimensions
2. ChangZeng strictly checks on each segment and working procedure, even on the freshmen training and the raw material purchasing. This product is available with free samples
3. The products have passed the overall quality inspection before they leave the factory. It comes with installation instructions and videos
4. The product complies with international quality standard and can stand any strict quality and performance test. It is highly resistant to mechanical and chemical degradation
1. As a company which dominates the steel pipes industry, ChangZeng is very proud.
2. The release of steel tubing produced by advanced technology accelerates the development of ChangZeng.
3. Shanghai ChangZeng Metal Co., Ltd. committed to enhance ChangZeng positioning and equity. Ask!