... Chair base, Made by Sand Casting Process, Powder Coated Process Surface, Suitable for garden bench,OEM is accepted. Material: aluminum alloy Power ... Surface finish process: polishing shot blasting, chromate plating, power coated and anodizing Casting capacity: 200 to 500 tons ... to customer's drawings, specifications and samples Chair Base,aluminum sand casting,power coated on surface(ISO9001:2000)