16mn low alloy seamless steel pipe 1.material:Q295,Q345,Q390,Q420,Q460 2.usage:bridge, auto, pressure ... StandardGB5310-95;GB9948-88;DIN17175-79;JISG3467-88;JISG3458-88;ASTM;ASMEMaterialCarbon Steel, Stainless Steel, Alloy Steel, Nickel Alloy Steel, Duplex ...