2731 high corrosion resistant zinc-pg电子游戏app


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2731 high corrosion resistant zinc-nickel black trivalent chromating passivation

product model


name:2731 high corrosion resistant zinc-nickel black trivalent chromating passivation

product features

1.contains no silver and produces a clear uniform jet-black. the color stability is perfect and avoids fading of silver-containing chromating processes after long term in stock.

2.nanometer sealer is directly added to chromating solution and improves the corrosion resistance even higher than conventional hexavalent chromating. it can last 200 hours in astm b-117 neutral salt spraying test without white rusts and 1000 hours without red rusts. the corrosion resistance and appearance keep the same after heat treatment. it’s especially good for auto part industry. 

3.easy for operation and maintenance. stable solution and long life time.

4.the conversion film exhibits high-hardness high resistance to scratch. the abrasion resistance is superior to hexavalent chromating processes. 

5.contains no cr(ⅵ) and oxidant, environmentally friendly products.it has been accepted by importers from european and america too.

usage method

make up: 

2731a zinc-nickel black trivalent chromating make up: 100-150ml/l.

2731b zinc-nickel black trivalent chromating  corrective: 20-50ml/l.


2731a zinc-nickel black trivalent chromating corrective: 1.5-2l/10000dm2.

2731b black zinc-nickel trivalent chromating replenisher: 5-7l/10000dm2.

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ekem(fujian) chemicals co. ,ltd

add: xingtai economic development     zone, zhangzhou, fujian, china

pc: 363900

ekem chemical industry co. ,ltd. of xiamen

add:20 /f, post &telecom guangtong bldg,no.11,    hubin east road, xiamen, fujian, china




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ekem chemical industry co,.ltd.of xiamen   ©2017 all right reserve   icp no.4582162 fujian