... Carbon steelStainless steelAlloy steelDuplex steelNickel alloy steelCarbon steel tee, stainless steel tee, alloy steel teeASTM A234 WPB,ASTM ... Alloy 200/nickel 200/UNS S2200,Alloy 400/monel 400/UNS 4400,Alloy 600/Inconel 600/UNS,6600,Alloy 201/nickel 201/UNS S2201,Alloy ... 625/Inconel 625/UNS 6625/NS336,Alloy ...