20# seamless steel tube is made of 20# steel, with slightly higher strength than 15#. It is seldom quenched and has no temper brittleness. Cold deformation plasticity is high, generally for bending, calendering, bending and hammer arch processing, arc welding and contact welding welding performance is good, gas welding thickness is small, strict shape requirements or complex shape on the parts prone to crack. Machinability cold drawing or normalizing state is better than annealing state, generally used for manufacturing force is not large and high toughness requirements of the workpiece.
Product name: Seamless tube
Product introduction: Seamless steel pipe is a kind of circular, square and rectangular steel with space section and no joint around. Seamless steel tube is made of steel ingot or solid tube blank by perforation of wool tube, and then made by hot rolling, cold rolling and cold drawing. Seamless steel pipe has a hollow section, a large number of used as the pipeline to transport fluid, steel pipe and round steel solid steel compared with the same tensile and torsional strength, lighter weight, is a kind of economic section steel. Product implementation standards are: seamless tube for structure (GB/T8162-2008), seamless tube for fluid transportation (GB/T8163-2008), seamless tube for low and medium pressure boiler (GB3087-2008), seamless tube for high pressure boiler (GB5310-2008), seamless tube for high pressure fertilizer equipment (GB6479-200) 0), seamless pipe for petroleum cracking (GB9948-2006), steel pipe for geological drilling (YB235-70), seamless pipe for diamond core drilling ( Gb3423-82), oil drilling pipe (YB528-65), carbon steel seamless pipe for ships (GB5312-85), seamless pipe for automobile axle bushing (GB3088-82), high-pressure oil pipe for diesel engines (GB3093-86), cold drawing or cold rolling precision seamless pipe (GB3639-83), stainless steel seamless pipe for structure (GB/T14975-2002), seamless stainless steel pipe for fluid transportation (GB/T14976-2002), seamless steel pipe for low-temperature pipeline (GB/T18984-2003).
Application: widely used in fluid conveying pipe, boiler plant, engineering, machinery processing plant
