... of origin: China packing: wooden cases or pallests Size: from 1/2"-48"angles: 45 Deg, 90 Deg, 180 Degthickness: SCH20, SCH30 ... , SCH40, STD, SCH80, SCH100, SCH120, SCH160Standard: GB/T, HGJ, SHJ, JB, ANSI, ANTM, MSS, JISMaterial: carbon steel (seam ...