... Thread,Cap,Nipple,StandardASTM B16.9, ASTM B16.11, ASTM B16.5; JIS B2311,JIS B2312 ... steel teeASTM A234 WPB,ASTM A420 WPL6, WPL3;ASTM A105 WPB;ASTM A106;ASTM A350 LF2,DIN St37, ... ASTM A860 WPHY 70, WPHY 65, WPHY 60, WPHY 52,WPHY 46,WPHY 42,API 5L GRB, X60, X65, X42,X52,ASTM A403 WP304, A403 ... WP304L, A403 WP316, A403 WP316L, A403 WP321ASTM A182 F 304, 304L,316, ...