... , BS,ISO 3.Quantity: It can be negotiated. Investment-Casting-Jack-Nut 1) Materials: carbon steel, stainless steel, alloy steel and ... 3) Operation: green sand casting and resin sand casting 4) Surface finishes: sand blasting, oiled, zinc, nickel, chrome plating, painting, hot ... machinery parts. Dalian Leading Metal Ltd welcome you. Investment-Casting-Jack-Nut