... Cap 2.Size: 1/2"-48" 3.Wall Thickness: SCH20,STD,SCH40,SCH80,SCH160, ... ,ASME,ASTM,JIS,DIN Carbon Steel Cap1. Standard: ANSI B16.9 / 16.28, ASTM A53/A106, API 5L, ASME B36.10M ... ---1996, DIN2605 / 2615 / 2616, JIS P2311/23122. Size: 1/2"-72"3. Wall Thickness: SCH20,STD,SCH40,SCH80,SCH160 ... ,hot galvanizing or as customer's special requirement ANSI B16.9 1/2"-48" bw Carbon Steel End Cap