Hot steel pipe fittings: Size: 1/2"~72" Thickness:SCH20,SGP,STD, ... ,SCH160 Standard:ANSI B16.9/16.28. Product Name: Hot steel pipe fitting 1. Type; elbow , Tee , reducer , cap 2, Size ... , ASME B36.10M--1996 4, Meterial:ASTM , A234,WPB,Carbon steel 5.Thick ness:SCH20, SGP,STD,SCH40,SCH80,SCH160 6 ... Attached some of our product photos for your reference: elbow joint