English
русский
日本語
عربى
EspañolWhy does the copper faucet be overspended, because the copper will be oxidized after entering the air, and the surface will produce a protective film. Lead is the worst, so this one internationally requires strict requirements.
Regarding the 304 stainless steel faucet in the market contains non -lead, this may require relevant national departments to verify. For the 304 stainless steel itself, there are some of the following background introduction:
304 stainless steel is a versatile stainless steel data. The rust -proof function is stronger than the 200 series of stainless steel data. High temperature resistance is also better, which can be high to 100-1200 degrees. 304 stainless steel has excellent stainless corrosion resistance and good corrosion function of anti -crystal anti -crystal. For oxidative acids, in the experiment, the 304 stainless steel has a strong corrosion resistance among nitric acid below the entertainment temperature. Alkaline solutions and most organic acids and inorganic acids also have outstanding corrosion resistance.
A high -alloy steel that can resist corrosion in the air or chemical corrosion medium. Stainless steel is a beautiful surface and corrosion resistance. One of the steel steels is generally called stainless steel. It represents high-alloy steel such as chromium steel, 18-8 chromium nickel steel. 304 is a versatile stainless steel, which is widely used to make equipment and parts that require outstanding induction (corrosion resistance and molding). In order to adhere to the inherent corrosion resistance of stainless steel, it is necessary to contain more than 12%chromium. 304 stainless steel is a brand of stainless steel produced according to the US ASTM standard. 304 is equivalent to my country's 0CR19NI9 (0CR18NI9) stainless steel. 304 chromium contains 19%and nickel is 9%.
Copper to make faucets is necessary to be lead -containing copper. Suppose that 59#and 62#These non -leading copper are difficult to form during the reconstruction. The higher the proportion of the lead content, the relatively simple forming, and the later mechanical processing of mechanical processing in the later stage. The time is also simple. According to the analysis of reporters, assuming that the use of copper without lead, it is difficult to finish in the final electroplating process.
