
Shanghai ChangZeng Metal Co., Ltd. supplies high quality steel coil with innovative technology. ChangZeng's steel tubing series include multiple types. As our steel products are made of steel h beam, they are durable and high quality. This product is available with free samples. It can be reused if needed, which will save one extra energy and investment and be a better approach to environmental sustainability. This product offers greater strength and uniformity.

To achieve green and pollution-free production, we will work hard to develop products that are less negative or totally friendly to the environment.