... PRESSURE, MEDIUM-PRESSURE,LOW-PRESSURE, CARBON STEEL, ALLOY STEEL AND STAINLESS STEEL ELBOWS, TEES, REDUCERS, CAPS, BENDS.PRODUCTION STANDARDSASME ... JIS B2313EN: EN 10253-1, EN 10253-2MATERIALSASME: A234 WPB, A234 WP1, A234 WP5, A234, WP9, A234 WP11, A234 WP12, ... , FUEL GAS, NUCLEAR ELECTRICITY, URBAN CONSTRUCTION, HOT-WATERHEAT AND ENVIRONMENTAL PROTECTON AND SO ON.WE ALREADY HAVE ACQUIRED ISO 9001 ...