... water conservancy, electric power, boiler, machinery, gas, construction, heating, metallurgy and shipbuilding. Service We Provide: 1. Certificate: API 6H Certificate, ISO9001 ... PN 16, PN 25, PN 40 and PN 64.Pressure Ratings: JIS 5K, 10K, 16K, and 20K.Standdard: ANSI,DIN,EN,BS,JIS ... ,AWWA,BS and GB ectMaterial: Stainless steel, ...