... ,SCH60,SCH80,SCH100,SCH120,SCH160,XXSUsageStructure Use,water transport,Building,Machinery,Traffic,Aviation,Oil development ect.OD TolleranceD<50mm,+-0.5mm ... hot rolled,273mm above hot expandPacking6 steel strip,bundles,Caps , plastic wrap,loading beltPRODUCT PHOTO: Big straight seam steal pipe