The Difference Between Trivalent Chromium Galvanizing (CR3+) And Hexavalent Chromium Galvanizing (CR6+).
1. Toxicity and pollution levels differences in chemical drum accessories
Trivalent: the price of trivalent chromium is higher, but the toxicity is low, only 1% of hexavalent chromium and the passivation effect is also good.
It can meet the requirement of 72-hour salt spray white rust less than 5%, the harm of chromium 3 is small, and the pollution degree of chromium 3 plating is reduced.
Hexavalent: Hexavalent chromium passivation process has many advantages, such as high corrosion resistance, self-healing ability of self-repair corrosion resistance, can easily passivation out of silver, blue and white, colorful, military green, black and other colors, raw material sources are wide and cheap.
However, hexavalent chromium is a carcinogen and has serious harm to the environment and human health.
The European Union signed a decree in Brussels in 2003 banning the use of hexavalent chromium in vehicle materials and parts from 1 January 2003.
Since August 13, 2004, the use of hexavalent chromium passivation process has been stopped in China's production of export products.
Short comments: As one of professional drum closures suppliers in China, we provide customers with drum closure, Drum Locking clamp, Drum Locking bolt and other products of CR3+ galvanizing, welcome to choose and buy.
Importance of Using Proper Drum Bung Seals for SafetyJanuary 31, 2024In industries that deal with hazardous substances and liquids, safety is paramount. One crucial aspect of ensuring safety is the use of proper drum bung seals. Whether you work in chemical manufacturi...view
Why Is Winter Bad For Coating ConstructionJune 30, 20221. Storage and transportation problemsFor liquid coatings, there will be a melting point problem, northern China in November basically fell below the freezing point, it is obvious that in this case, w...view
Importers Should Pay Special Attention To Take What Measures?July 4, 2022First, it is necessary to make clear the type of the product, to determine whether it belongs to the scope of application of the above-mentioned national standards, when coating products are applicabl...view
How Circulation Processes Influences Packaging QualityJuly 1, 2022The quality of packaging not only depends on the production of packaging containers, but also will be directly affected in the circulation process of use, protection, handling and storage. These facto...view