Through observation, it is not difficult to find that in the production of thick-walled steel pipes, thermal expansion pipes, etc., the pipes obtained by thick-walled welding on high-frequency welding equipment are called thick-walled steel pipes. Among them, according to the different uses and diff

The construction of cement mortar fabric should usually be carried out after the spiral steel pipe is laid, the pressure test is qualified, and the soil is compacted according to the design requirements. Due to the small rigidity of the steel pipe and the thin wall, the pipeline must be in a stable

In the process of producing straight-seam steel pipes, the temperature must be strictly controlled, to ensure the reliability of welding. If the temperature is too low, it may cause the welding position to fail to reach the temperature required for welding. When most of the metal structure is still

The application of large-diameter straight seam welded steel pipes has become very common in people's lives, so do you know what grades the quality of large-diameter straight seam welded steel pipes can be divided into? Let me introduce the specific content to you.Generally, the surface of hot-rolle