1.Brass:CuZn39Pb3 and so on 2.Cu%:54-58% 3.Thread standard:ISO,DIN,etc 4.Thread type:G,R,NPT,BSP 5 ... . Material: Brass(CuZn39Pb3/CuZn39Pb2, C38500/C38000, C3603/C3771, CW614N/CW617N) 2. Pressure Grade: 1.6MPa3. Design standard: GB/T8464-20084. Pipe ... :1. Sanitary, non-toxic, no heavy metal additives, directly apply to the water supply system.2. Corrosion resistant, not scaling, no rust ...