... Tee, Thread,Cap,Nipple,StandardASTM B16.9, ASTM B16.11, ASTM B16.5; JIS B2311,JIS B2312,JIS ... steel tee, alloy steel teeASTM A234 WPB,ASTM A420 WPL6, WPL3;ASTM A105 WPB;ASTM A106;ASTM A350 LF2,DIN St37, St45.8, ... 42,API 5L GRB, X60, X65, X42,X52,ASTM A403 WP304, A403 WP304L, A403 WP316, A403 WP316L, ... A234 WP11, A234 WP22, A234 WP5, A234 WP9A420 WPL8, A420 WPL9ASTM A335 P5, P9, P11, P12, P22, P91ASTM ...