Sheet metal machining is called sheet metal machining. For example, chimneys, drums, tank oilers, ventilation ducts, elbow reducers, rounded places, funnel shapes, etc. Fabricated from sheet material. The main processes include shearing, bending and folding, bending and forming, welding, riveting, etc. How do I protect raw materials for sheet metal processing? How do I protect metals exposed to air from corrosion? Corrosion protection has always been a bigger issue for metalwork.

（1） Base course derusting treatment of sheet metal processing products.

（2） The sheet metal processing product is epoxy zinc rich primer, which is mainly used for anti-rust primer of steel structure and steel products. The coating film has good physical and chemical properties, convenient construction and good supporting performance. The main components include epoxy resin, epoxy curing agent, zinc powder, anti-rust pigment, additive and mechanical solvent.

（3） Metal plate processing products are used as epoxy micaceous iron oxide intermediate paint: used together with epoxy zinc rich primer, as the transition layer of long-term anti-corrosion coating. Its function is to enhance the sealing and corrosion resistance of composite coating, and it can also be used as anti-corrosion and anti-rust primer. The coating is solid, with good adhesion, good sealing and good matching with the front and rear coatings. Composition: epoxy resin and curing agent, micaceous iron oxide and anti-rust pigment.

（4） SHEET METAL MACHINED PRODUCTS AS FACING. The surface course can be used for epoxy asphalt finish, chlorinated rubber finish, acrylic acid and polyurethane finish, fluorocarbon finish, etc.