亚洲国产精品无码久久98温泉中出,国产精品久久久久久黄无码,被俩个黑人前后破苞的女人,99久久久无码国产精品66

a large steel commonly used protection methods

Guangzhou Steel tells you: a large steel commonly used protection methods

          Zinc, aluminum and steel constitute a negative potential sacrificial anode to maintain the role of basic iron and steel making has been maintained. Sprayed aluminum coatings currently used to prevent industrial atmosphere, marine atmosphere corrosion steel Guangzhou the following features:
(1) sprayed aluminum coating and steel substrate binding firm, the number of long-life coating, long-term economic good;
(2) process flexible for important large-scale and long-term protection of steel structures difficult maintenance, field construction;
(3) zinc spray or sprayed aluminum coating plus anti-corrosion coatings closed, can greatly extend the use of life expectancy of the coating, from the role of theory and practical point of view, spray zinc or aluminum spray coating is the best anti-corrosion coating layer . Protective Life of the metal spray coating layer and anti-corrosion coating composite coatings is longer than the metal coating layer and protective layer anticorrosion coating both the number of life and as a single coating protective layer number of life several times.
Heavy-duty long-lasting coating consists of a primer, intermediate coat and topcoat.
From the long-term economic thinking, sprayed aluminum coating the most economical, but a one-time investment, good construction coating may be 10 years without maintenance. Epoxy zinc-rich primer + epoxy intermediate coat of iron and acrylic polyurethane lasting protection system with better economy
Steel commonly sprayed zinc or aluminum spray, increased corrosion coatings constitute long-term preservation structure, or by supporting the heavy-duty paint coating protection. Zinc, aluminum has great resistance to atmospheric corrosion properties. Spray sprayed zinc or aluminum on steel structures. Guangzhou Steel