... ASTM, BS,ISO 3.Quantity: It can be nego Investment-Casting 1) Materials: grey iron, ductile iron according to customer's ... , BS, DIN, EN, ISO 3) Operation: green sand casting and resin sand casting 4) Surface finishes: sand blasting, oiled, zinc, nickel, ... drawings or samples Detailed products range: pipes and its fittings, grating, frame, manhole covers, pump parts, hand-wheel, valve, flange, ...