... , SW/socket weld tee, seamless teeStandardASTM B16.9, ASTM B16.11, ASTM B16.5; JIS B2311,JIS B2312,JIS B2313,JIS ... tee, alloy steel teeASTM A234 WPB,ASTM A420 WPL6, WPL3;ASTM A105 WPB;ASTM A106;ASTM A350 LF2,DIN St37, St45.8, ... St.35.8,St.35.8/IASTM A333 GR.6,ASTM A860 WPHY 70, WPHY 65, WPHY 60, WPHY ... ,WPHY 42,API 5L GRB, X60, X65, X42,X52,ASTM A403 WP304, A403 WP304L, A403 WP316, A403 WP316L, A403 ...