The core difference between the cladding pipe equipment and the hollow-wall winding pipe equipment lies in the fact that the cladding pipe equipment produces B-type structure wall pipes, while the winding pipe equipment usually produces A-type structure wall pipes (hollow-wall winding pipes). There are significant differences between them in terms of process, cooling method and product performance.

The process of the Krar pipe equipment is more advanced, resulting in better performance of the pipes produced. However, the equipment investment and requirements are also higher. On the other hand, the hollow-wall spiral-wound pipe equipment has a lower investment and lower requirements, but the pipes produced are more restricted in key projects.