Product Description S55K1, S62A2K1 Higher Precision Alloy/Carbon Metal Harvest Agricultural Chain   Solution Description 1. Materials: Alloy steel & Stainless steel2. Surface area remedy: Shot peening / Zinc-plated / Nickel-plated / Dacromet-platedthree. Characteristic: Chain plate hole finally handed ball extrusion to make certain optimum fatigue resistance, parts of shot peening treatment method can make the chain and…