Detailed Product Description elbow : 1) size: 1/2~48 2) standard: ANSI B 16.9 / B 16.28, DIN 2605-2642,JIS,GB,BS3) Material: ASTM A 234 WPB, carbon steel, stainless steel, alloy steel4) Surface treatment: transparent oil, rust-proof oil5) Nominal wall thickness: SCH 5 s--XXS6) Packing: wooden case,lose,pallet and according customers requirement