... iso 2531 ductile iron pipe Standard: JIS, AISI, ASTM, GB, DIN, ENPlace of Origin: TIANJIN China (Mainland)Brand Name: ZHCXModel Number: 200 300 400 ... construction and decorations, railroad vehicles.Some seamless stainless steel pipe/tube which has excellent corrosion resistant, mechanical properties are ... is supplied with shipment, Third Part Inspection is acceptable. iso 2531 ductile iron pipe