1.For multilayer pipe, 2.Material is CW617N&CW602N, 3.SUS304 S/S sleeve 4.Size 16,18,20,25,32,1/2 ... ",3/4",1" 5.tin plating Our male coupling brass press ... plastic ring.Brass body material can be CW617N, CW602N, Hpb59-1, Hpb58-2, Hpb58-3, etc;brass body superficial treatment ... .203420*2,00 - 3/4" M1708111.251225*2,50 - 1/2" M1508111.253425*2,50 - 3/4" M1008111.323432*3 ...