Galvanized Hex Bolt
Dacromat Plating was first patented by Dacral NDS Co. and the name has been driven from this company. the process involves submerging bolts and nuts in a water solution of zinc and aluminum - aluminum with substantially lower percentage - along with Chromate as solvent in 100 degrees Celsius, for zinc and aluminum particles to take position in layers on the surface of the fasteners.
Product description
After extracting the bolts and nuts from zinc tub, they are usually centrifuged to lose the redundant particles and then are heated by 300 degrees Celsius so that the layers of zinc and aluminum are very well baked on the surface. in order to have a highly resistant layer the entire process is repeated once more to form a firmly thick, low friction coefficient, blurry silver layer on top of the bolts and nuts.
