Advantages and Classification of Hot-Rolled Seamless Steel Pipe

Hot-Rolled Seamless Steel Pipe with respect to the cold rolled seamless steel pipe,cold-rolled seamless steel pipe is rolling below the recrystallization temperature,while the hot rolling seamless steel pipe is rolling up the recrystallization temperature.Hot rolling seamless steel pipe can destroy the cast structure of the ingot,the refinement of the crystal grains of the steel,and eliminate the defects of the microstructure,thereby compacting steel tissue,improve the mechanical properties.This improvement is mainly reflected along the rolling direction,so that the steel to some extent,no longer be isotropic body;pouring the formation of bubbles,cracks,and loose,and also in a high temperature and under pressure welding.
The hot-rolled seamless steel pipe generally devide into low and medium pressure boiler steel pipe,high pressure boiler steel pipe,steel pipe,stainless steel pipe,oil cracking pipe,geological steel pipes and other steel and other


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