... Carbon Steel Tee 2.Size: 1/2"-72" 3.Wall Thickness: SCH20,STD,SCH40,SCH80,SCH160,XXS 4.Standard: ANSI,ASME,ASTM,JIS,DIN Carbon Steel ... Tee1. Standard: ANSI B16.9 / 16.28, ASTM A53/A106, API 5L, ASME B36.10M--- ... Thickness: SCH20,STD,SCH40,SCH80,SCH160,XXS4. Material: ASTM A234 WPB, ST35.8, ST37, WP11, 20#, ... China 1/2"-72" Carbon Steel Equal Pipe Tee