Seamless steel pipe size range: 8-1240×1-200mm
The specifications of the seamless steel pipe are expressed in terms of outer diameter*thickness mm. Seamless steel tube is divided into hot-rolled and cold-rolled (dial) seamless steel tubes. Hot-rolled seamless steel tubes are divided into general steel tubes, low- and medium-pressure boiler steel tubes, high-pressure boiler tubes, alloy steel tubes, stainless steel tubes, petroleum cracking tubes, geological steel tubes, and other steel tubes. Cold-rolled (dial) seamless steel pipes include general steel pipes, low and medium pressure boiler steel pipes, high pressure boiler steel pipes, alloy steel pipes, stainless steel pipes, petroleum cracking pipes, and other steel pipes, as well as carbon thin-walled steel pipes and alloy thin-walled steel pipes. Stainless steel pipe, special-shaped steel pipe. The outer diameter of hot-rolled seamless pipe is generally greater than 32mm, wall thickness is 2.5-75mm, the outer diameter of cold-rolled seamless steel pipe can be up to 6mm, the wall thickness can be up to 0.25mm, and the outside diameter of thin-walled pipe can be up to 5mm, and the wall thickness is less than 0.25mm. Rolling has higher dimensional accuracy than hot rolling.
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Seamless Steel Pipe Knowledge-Shandong Seamless Steel Tube Knowledge Seamless steel tube is a round, square and rectangular steel with hollow section and no joints around. Seamless steel tubes are made by punching steel ingots or solid billets and then hot rolled, cold rolled or cold drawn. Seamless steel tubes have a hollow cross-section and are used in a large number as pipes for conveying fluids. Compared with solid steel such as round steel, steel pipes have a lighter weight when subjected to the same flexural and torsional strength. They are economical cross-section steels and widely used in the manufacture of structures. Parts and mechanical parts, such as oil drill pipes, automobile drive shafts, bicycle racks, and steel scaffolding used in construction.