Galvanized refers to the surface of metal, alloy or other material coated with a layer of zinc in su...
wire rope is composed of many steel wire (for example: 8 * 19 s structure is composed of 152 with st...
Elevator wire rope safety coefficient refers to the car parked at the lowest layer with rated load s...
Thick and dense of pure zinc layer covering the surface of steel fasteners, it can avoid the steel s...
pretreatment is not complete. The surface oxidation film, affect the normal zinc deposits from Nanto...
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