1. The raw materials of ChangZeng square steel tubing are paid great attention during the incoming material inspections. It is easy to process and economical
2. This product can flexibly adapt to the changing working requirements. It can meet the specific needs and workload. It can be cold rolled to be smoother and have more precise dimensions
3. Compared with other products, the product has more obvious advantages of longer service life and more stable performance which have been tested by authoritative third parties. It is chosen for its higher resistance to corrosion
4. The product is quality certified for long life. It complies with the standards of GB, ASTM, JIS, BS, EN, TOCT, KSD, IS, etc
1. Shanghai ChangZeng Metal Co., Ltd. has evolved into an experienced Chinese manufacturer. In the past years, we are engaged in the development, design, and production of square steel tubing .
2. Shanghai ChangZeng Metal Co., Ltd. has all kinds of technical personnel and management personnel.
3. High-quality product with zero defect is the goal we pursue. We encourage employees especially the production team to carry out strict quality inspection, from the incoming materials to the final products.