Electrochemical conversion coating - formed by oxidation, phosphate, chromate, fluoride, and the like; surface alloyed protective layer - by nitriding, alloying (Chromizing, aluminized, nitriding, etc.) form; metal covering the protective layer - comprises a metal plating, metal spraying, plating, vapor phase plating and the like; non-metallic coatings - including paints back layer, an organic coating such as rubber, plastic without, coating machines, such as enamel, ceramic coating and so on. Wherein the plastic, ceramic and other "permanent" coating can not be removed or automatically generate a clean 409 stainless steel pipe, it can not be 201 stainless steel pipe cutter, bearings, measuring and other work surface stainless steel pipe 304, to avoid damage. Stainless steel used in the transport sector, mainly in railway vehicle and automotive exhaust systems. At the same time it is the largest stainless steel applications. From the later 1980s, passenger vehicles and railway rolling stock in volume using a stainless steel exhaust related parts or components to enhance the life cycle of both, at the same time reducing the cost and improve the transport efficiency stainless steel pipe, is the majority of users are very popular. In recent years, the rapid development of urban rail transit country and the people from the security, economic considerations, stainless steel in the vehicle use is increasing. Stainless steel pipe | Stainless pipe | pipe industry by Shandong Jinding Jinding Stainless Steel Pipe Co., Ltd. Shandong Jinding Stainless Steel Pipe Co., Ltd. (www.ss304L.com) (www.ss304L.com) strong, credible, in Dezhou's steel industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Jinding Industry into the brilliant and you work for a better future!