... products Production details list Product nameopen top ringspecifications:0.6*φ135*12 Product materials1.Steel alloy:carbon ... Bending, Surface Treatment, Heat Treatment, Griding, Milling, wire EDM, Linear Cutting etc.Independent development mould abilityWe can ... Surface treatmentBlacking, Polishing, Anodize, Chrome plating, Zinc plating,Nickel plating, Tinting, Power coating, E-coating etc Quality ...