In color plate industry, we often meet some interesting question: salt spray test 800 hours, the equivalent of long and outdoor corrosion erosion? QUV - A test 1000 hours, equivalent to outdoor weatherability how long? Why fluorine carbon coating can be out of warranty, 20 -- 25 years, according to what is it? What experiment, can mimic outdoor state 100%

     Strictly speaking, any laboratory experiment instrument, can imitate the actual complex conditions of outdoor, corrosion of steel sheet or film aging, are in the outdoor light, temperature, corrosion, temperature changes in the conditions, such as comprehensive occur under the action of variation, and laboratory instruments, can only imitate one to two conditions, and can't simulate changes in reality, only by strengthening one side the harsh, color plate film resistance situation. Therefore, so far, no one can be sure to tell everyone, laboratory test to measure how long, how long can be equivalent to the outdoor. Laboratory testing, only simple simulation, by the contrast between the different products, can tell the difference between.

     But these exposure field is common, select the dimension of the basic in 25 plus or minus 5 degrees north latitude, a subtropical humid monsoon climate area, rainfall, light is strong. To the north of China, less rainfall, weak light, atmospheric corrosion, the natural environment conditions inconsistent obviously. Therefore, huijin color steel co., LTD., considering its own customer base geographical situation, set up a belongs to own exposure site (36 degrees north latitude), USES the international standard test method, get the color steel plate of first-hand data, as to the different requirements of customers recommend the basis of different types of products.

     In color plate industry, currently recognized in the world, the only can detect film resistance to ageing, how long is the corrosion test, is the outdoor exposure. Therefore, each country, are established respectively in accordance with its own national conditions of exposure field, such as the United States of Florida exposure, green coffees which are Japan's Okinawa insolate, Australia Allunga, China's hainan exposure field and so on. The international big company, before the new coating products, basic can insolate in such field, is there a minimum 5 years of experimental data, or more. And their fist products, but also more than 20 years of exposure to the testing data.