Stainless steel products with unique corrosion resistance, which can react with the oxidant to form a thin dense oxide film, for preventing the occurrence of the oxidation reaction into further. For other types of metal pipe, almost no passivation function, which is stainless steel pipe fittings material corrosion resistance than the general one of the main metal pipe. Meanwhile, stainless steel is an environmentally friendly material, made of stainless steel pipes will not cause secondary pollution to water quality, to meet health requirements. Stainless steel pipe is a pipe can be completely recycled, not to leave future generations can not be processed garbage. The strength of stainless steel pipes than any plumbing materials, greatly reducing water leakage occurs due by external phenomena, effective conservation of water resources.