... -hole connector: 1.Forged body 2.Full ranges of types 3.ISO9001,CE approved 4.OEM service About ... N=2,3,4,5,6......)2.Material:Brass of different types:DZR,CW617,CZ132,Normal Brass and so on3 ... treatment to eliminate the stress in the process of cracking6.Size:1216,1620.,etc7.Certificate:All our ... for installing manifold:We can offer full ranges of types of items,used in water supply and heating system ...