JX-21JG457-D6.5-D19-30.5-ST, CNC carbon steel machined parts electrical equipment parts, applied to the incoming cabinet, outgoing cabinet, metering cabinet, compensation cabinet (capacitor cabinet), corner cabinet, busbar contact cabinet, electrical cabi

Medium carbon steel: carbon content between 0.25% and 0.60%, moderate strength and hardness, suitable for the manufacture of mechanical parts, bearings, tools, etc. High-carbon steel: carbon content between 0.60% and 2.11%, high strength, and hardness, but relatively poor toughness, suitable for the manufacture of springs, saw blades, tools, etc. need high strength.

1, electroplating surface treatment: In black electroplating, there are two kinds of black zinc and black nickel, the process principle is basically the same, but the formulation of electroplating solution and post-treatment with different lacquer or passivation solution. Zinc is chemically active, easy to oxidize and darken in the atmosphere, and finally produces "white rust" corrosion, after galvanizing chromate treatment, in order to cover the zinc with a layer of chemical transformation film, so that the active metal in a blunt state, is the passivation treatment of zinc layer. Passivation film can be divided from the appearance of white passivation (white zinc), light blue (blue zinc), black passivation (black zinc), military green passivation (green zinc), and so on.

2, surface treatment environmental protection black zinc stainless steel screws: Surface treatment plating process is: oil removal - cleaning - weak acid etching - zinc plating - cleaning - passivation - cleaning - drying Lake-frame; the last lake-frame is mainly black oil (a kind of paint), tenax water, rubber water in a certain ratio, its main role is to improve the surface black uniformity and brightness of environmentally friendly black zinc stainless steel screws and enhance the corrosion resistance of environmentally friendly black zinc stainless steel screws.

Packing: Inner is Poly foam, out is carton. Then pallet. Carton size: 29*19*19.5CM and 23.5*17.5*8, CM and pallet size is: 215*100*90CM, or as your requirement.

Packaging & Delivery and Packaging Details

1. Shrink film+wooden box

2. Cardboard box+pallet

3. Color box

4. As per the customer's request