Monthly Archives: January 2022

Inspection of steel pipes generally includes: inspection of geometrical dimensions and surface quality; chemical composition, mechanical properties, process performance, inspection of high and low-fol...

Galvanized steel pipes: In order to improve the corrosion resistance of steel pipes, general steel pipes (black pipes) are galvanized. Galvanized steel pipes are pided into hot-dip galvanizing and ele...

Pipeline pickling refers to a series of technical treatment processes on the inner surface of a pipe according to a specific process procedure using an acid or alkali solution with a small amount of c...

1) The seamless pipe is a long strip of steel with a hollow section and no joints around it. It is a steel pipe without seams, hot rolling or cold drawing process. Seamless steel pipe characteristic i...

In general, hot rolling has better mechanical properties than cold rolling. The hot rolled steel has improved tensile strength, yield strength, ductility and toughness. In addition, it is important th...

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...