... %:57%-60% 3.PPR:Yanshan Petro,Korea Hyosung 4.Thread standard:ISO 5.Thread type:G,R, NPT, BSP Ppr ball valveFeature:1. Material ... (CuZn39Pb3/CuZn39Pb2, CW614N/CW617N and so on) PPR is from Hyosung of Korea.2. Thread standard: GB, BS, JIS and so on ... .7. Piping system for other industries and agriculture. High quality male thread PPR ball valve