... size can be customized Materials: AISI304, AISI304L, AISI316, AISI316L Union nut(ISO9001: 2008, CE, TUV certified) Specification: DN10-DN150, 1 ... (180G, 240G, 400G), inner surface mechanical polished Ra less than 0.4 - 0.8μm, outer surface glass polished Ra less ... valve, diaphragm valve, safety valve, union parts, ferrule, end cap, nut, clamp, elbow, tee, cross, reducer, sight glass, manhole cover, ...