This standard specifies the nominal diameter, structural type and size of water-cooled metal centrifugally cast ductile iron pipe molds, technical requirements, test methods, inspection rules and markings, packaging, transportation and storage. This standard applies to forging and extrusion tube dies.
YB/T 4179-2008 history
2008YB/T 4179-2008 Water-cooled metal mold centrifugal casting ductile iron pipe mold