... . K7&K9&K8 3.ling according to ISO4179 flange t joint ductile iron pipe Standard: JIS, AISI, ASTM, GB, DIN, ENPlace of Origin ... articles, construction and decorations, railroad vehicles.Some seamless stainless steel pipe/tube which has excellent corrosion resistant, mechanical properties are suitable ... is supplied with shipment, Third Part Inspection is acceptable. flange t joint ductile iron pipe