... CW617N, C37710 and CuZn40Pb2 2.Forged brass PPR insert PPR fitting,PPR insert,brass insert,brass fitting,ppr coupling Specifications:Materials: CW617N, C37710 and CuZn40Pb2 ... Forged brass PPR insert Thread standards: DIN 2999 or BS21 ... received payment in advance.Payment Terms:T/T,L/C \ PPR Insert Coupling