... . K7&K9&K8 3.ling according to ISO4179 ductile iron socket spigot pipe Standard: JIS, AISI, ASTM, GB, DIN, ENPlace of ... , DIN, JIS, T14975, etc.4.Out Diameter: 6-830 mm5.Wall Thickness:0.5-40 mm6.Length:SPECIFIC OR AT RANDOM ... supplied with shipment, Third Part Inspection is acceptable. ductile iron socket spigot pipe