... 2.Material:Grey iron 3.Process:sand casting 4.Quality Assurance 5.Test:chemical ... JIS, BS, DIN, EN, ISOOperation: green sand casting and resin sand castingSurface finish: sand blasting, sand blasting, oiled, zinc, nickel, chrome plating, ... fittings, grating, frame, manhole covers, pump parts, handwheel, valve, flange, bollard, pilingaccessories, counterweight iron, construction machinery parts ...