Knowledge of Seamless pipe

Generally, seamless steel pipes are made of 10, 20, 30, 35, 45 and other high-quality carbon steels such as 16Mn, 5MnV and other low-alloy structural steels or 40Cr, 30CrMnSi, 45Mn2, 40MnB and other composite steels by hot rolling or cold rolling. Seamless pipes made of low carbon steel such as 10 and 20 are mainly used for fluid transportation pipelines. Seamless tubes made of medium carbon steel such as 45 and 40Cr are used to manufacture mechanical parts,Seamless pipe such as stressed parts of automobiles and tractors. Generally,Seamless pipe seamless steel pipes should be used for strength and flattening tests. Hot-rolled steel pipes are delivered in hot-rolled or heat-treated state;Seamless pipe cold-rolled steel pipes are delivered in hot-heated state. Seamless steel tubes for low and medium pressure boilers: used to manufacture various low and medium pressure boilers, superheated steam tubes, boiling water tubes, water wall tubes,Seamless pipe and superheated steam tubes for locomotive boilers, large smoke tubes, small smoke tubes and arched brick tubes.

Use high-quality carbon structural steel hot-rolled or cold-rolled (dial) seamless steel pipe. It is mainly made of No. 10 and No. 20 steel. In addition to ensuring the chemical composition and mechanical properties, a hydraulic test,Seamless pipe such as crimping, flaring,Seamless pipe and flattening, is required. Hot-rolled products are delivered in a hot-rolled state,Seamless pipe and cold-rolled products are delivered in a heat-treated state.