1.Carbon Steel Tee 2.Size: 1/2"-72" 3.Wall Thickness: SCH20,STD, ... ,SCH160,XXS4. Material: ASTM A234 WPB, ST35.8, ST37, WP11, 20#, Q2355. Surface treatment: black painting,Anti-rust varnish oil,hot ... special requirement China 1/2"-72" Carbon Steel Equal Pipe Tee