Cold Rolled Seamless Steel Tube A: Tolerance:0-0.05mm B: Roughness:0.2-0.8um C: Straightness:1mm/1000mm D: Smooth surface Cold Rolled Precision Seamless Steel Tube:A: smooth surfaceB: high precision sizeC: rust prevention treatment: oiled1)Grade:20#,45#,16Mn C20,C45,St52 A106 A53 2)OD10.3mm--1219mm WT SCH5S--XXS 3)High qualitycold drawn seamless steel pipe Hope to be your faithful partner and ...