... &K9&K8 3.ling according to ISO4179 ductile iron pipe dn 600 Standard: JIS, AISI, ASTM, GB, DIN, ENPlace of Origin ... cold rolled3.Standards:ASTM / ASME, GB, DIN, JIS, T14975, etc.4.Out Diameter: 6-830 mm5.Wall Thickness:0.5-40 ... with shipment, Third Part Inspection is acceptable. ductile iron pipe dn 600