... .Application scope: applicable in water conservancy, electric power, machinery, chemical industry, metallurgy, petroleum, papermaking, printing, shipping ... crankshaft, rotary drum, main shaft of machine tool, guide rail, vertical shaft, etc.Spray materials in use: zinc, ... valveGas bag (storage tank): Volume ≥0.5M3Equipment for workpiece surface pretreatment: sand blasting machine, electric spark ...