In standard GB709,Shear plate and sheet rolling steel plate welded steel pipe, also known as welded pipe.Is made of steel sheet or strip after crimp forming welding of steel pipe.Welded steel pipe production technology is simple, high production efficiency, varieties, specifications, less equipment investment, but lower than general strength of seamless steel tube.Chinacoal05
Material:Q235A,Q235C,Q235B,16Mn,20#,Q345,L245,L290,X42,X46,X60,X80,0Cr13,1Cr17,00Cr19Ni11,1Cr18Ni9,0Cr18Ni11Nb etc.