... & SS& AS Size :DN15-DN1200 ISO9001 ISO14001 OHSAS1800 Galvanized Blind FlangesNameFlangeSize1/2" to 48" DN15-DN1200ThicknessSCH5--SCH160.XXSPressureSCH5-- ... reducer, tee, pipe cap , union ,corrugated compensator , metal hose ,spring hanger and etcApplicationRangePetroleum, chemical, power, gas, metallurgy, shipbuilding, construction, ... under the ISO9001:2000 and API strictly . Galvanized Blind Flanges