Union nut Specification: DN10-DN150, 1/2"-6", larger size can be customized Materials: AISI304, AISI304L, AISI316, AISI316L ... nut(ISO9001: 2008, CE, TUV certified) Specification: DN10-DN150, 1/2"-6", larger size can be customized Materials: AISI304, AISI304L, AISI316, AISI316L ...