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Ductile iron pieces using national standard iron


Ductile Iron temperature control in 1570 ℃ ~ 1610 ℃ into the spheroidization, the second birth, wet sand casting or coated sand shell type casting. Out of the Ductile Iron Fittings box temperature does not exceed 550 ℃, the grinder to remove the riser root, crawler shot blasting machine to clean up the surface. Hot galvanized surface treatment, the average thickness of the zinc layer of not less than 86um.

Mechanical properties: The line of the mechanical properties of the tensile strength and elongation and the drawings provided by the customer requirements for the acceptance basis, yield point, hardness for reference, but must be in the process control to meet the standards of this standard.