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