seamless steel tube standard: ASTM/ASME,API,DIN,JIS,BS,SAE OD: 16MM- OD426MM Thickness: SCH10,SCH20,SCH40,SCH80 seamless steel tubeIn accordance with standard ASTM ... ,SCH40,SCH80,SCH160,XS,XXSLength: according to customers requestPacking: bundle Seamless steel pipe Material20# 16Mn StandardGB/T8162GB/T8163GB/T3087specificationspecificationspecificationspecificationspecificationspecification26-32*2.5 ...