Blanking process: using laser, tower punch, flame, plasma, coil forming and CNC bending technology
Welding process: adopt argon arc welding and gas shielded welding spot welding or break welding.
Rust removal process: the whole box is pickled to remove oil, decontamination and enhance the surface adhesion of paint.
Coating process: the inner wall is treated with epoxy resin asphalt paint for anti-corrosion treatment, and the box body is painted
Assembly process: All moving parts should move freely, without interference and jamming, without abnormal noise, and without loosening of fasteners.