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Cangzhou Qiancheng Stainless Products Co.,Ltd
Add:Tianzhuangzi Town, Zhifangtou Village, Cang County, Cangzhou City, Hebei Province, China. 061000.
Tel:+86-317-4953899
Fax:+86-317-4953796
Ph:+8615930783048
E-mail:sales1@qcfitting.com
Skype:auxgm2792

advantage of brass

- Jan 04, 2018 -

External protective coatings such as electroplated cadmium, zinc, and zinc phosphate are applied to carbon steel fittings to extend their service life in corrosive environments. However, in the past decade, cadmium is no longer accepted by most industries due to environmental considerations. Cadmium and zinc corrode sacrificially, protecting the steel substrate from normal atmospheric rusting due to the common presence of oxygen, moisture, and acidic gases. However, they are rapidly attacked by many fluids — including those containing acidic hydrogen, reactive fluorine, chlorine, bromine, iodine, and nitrogen. Zinc-nickel external coating provides enhanced carbon steel protection in ASTM B117 salt spray testing and in fertilizer (urea) applications.

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