... : SCH20,STD,SCH40,SCH80,SCH160,XXS 3. Standard: ANSI,ASME,ASTM,JIS,DIN Carbon Carbon Steel Elbow1. Type: Elbow (Radius:LR ... :45D,90D,180D)2. Standard: ANSI B16.9 / 16.28, ASTM A53/A106, API 5L, ASME B36.10M---1996, DIN2605 / 2615 ... "4. Wall Thickness: SCH20,STD,SCH40,SCH80,SCH160,XXS5. Material: ASTM A234 WPB, ST35.8, ST37, WP11, 20#, Q2356. Surface treatment ...