1.Casting union conical BW/M 2.CNC lathe process 3.Threaded ends,NPT ... 8"-4",DN6-DN100 304 stainless steel union BW/M As the professional stainless steel pipe fittings manufacturer, we ... nipple, hex bushing, hex cap, hex plug, weld nipple, barrel nipple, union conical f/f, elbow union conical m/f with best quality ... 316TB, SUS 316LTB) and etc;Threads in accordance with ANSI/ASME B1.20.1; ISO 7/1, BS 21, ...