GB-T-8163-Q345-Steel-Pipe-Specification

Carbon Steel Pipe and Alloy Steel Tube Manufacturers and SuppliersGB/T 8163 Q345 Steel Pipe SpecificationGB/T 8163 Q345 is a low alloy seamless steel pipe meeting the minimum yield strength of 345MPa and tensile strength of 470-630 MPa,which is commonly used for the transportation ofordinary fluids.The GB/T 8163 Q345 steel material is available in five quality levels:Q345A,Q345B,Q345C,Q345D,and Q345E.Among these,the Q345A Impact test is not required,while Q345B,Q345C,Q345D,and Q345Emust meet specific impact performance requirements at temperatures of+20℃，0℃，-20℃，and-40℃，respectively.交Manufacture ProcessHot finished:hot rolled or hot expanded;Cold finished:cold rolled or cold drawn;女Chemical ComponentsChemical composition (cast analysis)by massGradesiNbCuMoQ3454020m%.50 max1.70mx0035max0035m030m0.50 mure020 max0.012m.10 max日45B020m05 max170mx0085 max0035m030m30.50m020m30.012m10 maxp14020m05 mix170mg000m30030mg0.07 max015m020m00m050m020m30012m0.10 max0015mn045m概Q345D0.18m170m000m30025m0.07m3n1m起020m0.20 max0.012mQ10 max0015mn0345E0.18m30.50m170m0025m30020m0.07m3015m320m0.50m30.20m0.012m3010 max0015mnMechanical PropertiesTensile PropertiesImpact PropertiesGradeTensile strength RaLower yield strength R.Elongation AImpact temperatureImpact energy KVaQ345A20%minQ345B20%mn+20℃34]minQ345C470-630MPa345 MPa min21%min0℃34J minQ345D21%min20℃341mnQ345E21%min40℃27J minLearn more:GB/T 8163 Q345 Seamless Steel Pipe SpecificationWhatsApp:008613463768992 Email:sales@botopsteelpipes.com Website:www.botopsteelpipes.com