... nipple ,welding nipple,hose nipple,socket,coupling etc.2.valves series: 1pc,2pc,3pc ball valve,flanged end ball valve,gate ... ,globe valve,Y-strainer,sanitary valve etc.3.Quick coupling: type A,TypeB, typeC, typeD, typeE, typeF, typeDC, typeDP4.Malleable iron ... our factory, establish the cooperative relation of equal mutual benefit . Type D COUPLER FEMALE