... 5)WT:1-160 mm ASTM A234 WPB carbon steel tee 1.Certificate:SGS,ISO,CCS,API 2 ... degree elbow, Tee, Reducer, Crosses, End capsMATERIALCarbon Steel Butt Welding Pipe fitting:ASTM A234 WPB,WPC, A105; A420 ... ; WPHY42,46,52,56,60,65,70 Alloy Steel Butt Welding Pipe fitting:ASTM A234 WP1, WP12, WP11, ... WP22, WP5, WP7, WP8, and WP91 Stainless Steel Butt Welding Pipe fitting:ASME A403 WP304,304L,316,316L, 319, ...