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The Use of Hot Dip Galvanized Steel Pipe Hot-dip galvanized steel pipes are used in construction, machinery, coal, chemical, electric power, railway vehicles, automobile industry, highways, br...

Overview of two steel pipe processes Cold drawn (rolled) seamless steel pipe: round tube billet → heating → perforation → head → annealing → pickling → oiling (copper plating) → multi-pass cold draw...

Common Annealing Process Annealing is a metal heat treatment process in which the metal is slowly heated to a certain temperature for a sufficient period of time and then cooled at a suitable rat...

Spiral steel pipe is a spiral seam steel pipe which is made of steel coiled coil as raw material, which is often heated and extruded, and welded by automatic double wire double-sided submerged arc wel...

The spiral steel pipe shall be subjected to mechanical performance test, flattening test and flare test before leaving the factory, and shall meet the requirements specified in the standard. The quali...

Welded steel pipes are normally formed by crimping a steel plate or a steel strip then welding. According to the form of weld, it is pided into straight seam welded steel pipe and spiral welded steel ...