1, the appearance of identical two taps, with the copper content is completely different: the formal process leading surface point is, are the main foundry casting into the desired shape, then machine shop process, and then by surface treatment processes , matched by the pressure test valve and fittings after the factory, like Kohler, TOTO, AGX, nine, animal husbandry and other businesses is one such operation; while some leading thin shape, it referred to as the copper in the trade, from the appearance of view, exactly the same product, weight is that much difference, of course, affect the quality of the used up, if water pressure is high, leading to big trouble burst. Test method is known as product than the weight, we see in online product sales, if not the weight, and must be carefully chosen; in the physical store to buy, you should weigh (say) about the weight of copper prices from 2009 a ton of years of more than 30,000 rose to more than 70,000 a ton now, and we calculated that, if a lead weight 1.5kg, light copper to close to 100, the light weight of course cheaper. kitchen taps
2, the real ones, willed: Although by the first method, the weight of the method adopted, is not to get away with it, no, although some of the same shape as the leading weight also can be, but there may be material issue, the poor quality of copper, stainless steel or other alloy materials. Test method is: with a knife or other hard objects at the head of the screw on the inside where scuffing, the normal copper wire is normal yellow copper, white or mottled appear have a problem. There is also a method of identification, if the leader of the weight multiplied by the price of copper when copper prices even lower, it is definitely a problem, unless it is second-hand treatment. kitchen taps
3, The true, false true, half true half false: as basin tap,tap spout and accessories may be true of copper, and copper column may not be. Shower phenomenon is even more obvious half-truths, the subject is pure copper casting, stainless steel pipe section may be aluminum or alloy. This phenomenon can be used for more comprehensive way to test out.
In a word, good or bad the product to be simple is very simple test, a third operator, said second scratch, the business can not be a loss to do business, to ultra-cheap, only shoddy. I believe a word, to buy some fine people who did not sell, cheap too less than the cost, and must have a problem. Can see the appearance, not the weight of the online shopping business, a certain amount is not enough.kitchen taps