Detailed Product Description Standard and regulationDesign and manufacture: BS5163, DIN3352Face-to-face-dimension: GB/T12221, DIN3202, BS2080, JIS B2002, Flange connection dimension: GB4216, GB/T 17241, GB/T 9113, ISO7005, DIN2501Inspection and test:? GB/13927, API598Main material: Cast iron, Ductile cast iron, Carbon steelNominal diameter: DN40~600mm Applicable working conditionsApplicable ...