Product Description Machinery Zinc-Plated Factory Direct Sales S Type Agricultural Conveyor Chain with High Quality   Product Description 1. Material: Alloy steel & Stainless steel2. Surface treatment: Shot peening / Zinc-plated / Nickel-plated / Dacromet-plated3. Characteristic: Chain plate hole finally passed ball extrusion to ensure maximum fatigue resistance, parts of shot peening treatment makes the chain…