1.Product Name:Tee 2.Material:Carton,Stainless,Alloy 3.Standard:GB/T9112 ... description of carbon steel teeTee TypeEqual tee, reducing tee,lateral tee, BW/butt weld tee, TH/threaded tee, SW/socket weld tee, seamless teeStandardASME B16.9, ... .Material Carbon steelStainless steelAlloy steelDuplex steelNickel alloy steelCarbon steel tee, stainless steel tee, alloy steel teeASTM A234 WPB,ASTM A420 WPL6, ...