
Spray Pre-treatment Tunnel
Tunnel-type pre-treatment system that sprays process solutions through multi-stage nozzle manifolds — efficient cleaning in a compact footprint for continuous lines.
Immersion pre-treatment line in which the conveyor dips parts through each process tank for degreasing, rinsing, surface conditioning, pickling and phosphate conversion coating before painting.
Coating quality starts with pre-treatment. Before surface treatment or painting, fasteners and hardware must be degreased, cleaned and protected from rust so the coating achieves good adhesion and corrosion resistance.
In an immersion system, the conveyor lowers parts into each process tank in turn, so complex shapes and parts with internal cavities are fully wetted. A typical sequence is degreasing → rinse → surface conditioning → pickling → rinse → phosphating → rinse → dry-off → coating.

Tunnel-type pre-treatment system that sprays process solutions through multi-stage nozzle manifolds — efficient cleaning in a compact footprint for continuous lines.

Pre-treatment line in which a gantry hoist carries racks or baskets into each process tank in sequence — suited to large, heavy parts and flexible high-mix production.
Send us your part type, material and target output, and we will reply with a recommended configuration and quotation.