The protection mechanism of stainless steel backing wire + TIG process is that the back weld is protected by the metallurgical reaction of slag produced by welding wire melting and its alloy elements, slag and alloy elements.Production process of stainless steel pipe A. preparation of round steel; b. Heating; c. Hot rolling perforation; d. Cutting head; e. Pickling; f. Grinding; g．； h. Cold rolling; i. Degreasing; j. Solution heat treatment; k. Straightening; l. Pipe cutting; m. Pickling; n. Finished product inspection.Port-of-SpainOxygen plus gas flame can not cut stainless steel plate because stainless steel is not easy to be oxidized.Stainless steel pipe is safe, reliable, hygienic, environmentally friendly, economical and applicable. The successful development of pipeline and new reliable,Port-of-Spain420J2 stainless steel belt manufacturer, simple and convenient connection makes it have more irreplaceable advantages of other pipes. It will be used more and more in engineering, and the use will be more and more popular. It has a good prospect.Venezuela,CE--“ Code for design of cold formed stainless steel structural parts & rdquo; And & ldquo; jointly published by nidi and euro inox; Structural stainless steel design manual & rdquo; The design of structural parts for buildings with long service life and good integrity has been simplified.Measures to improve the welding quality of stainless steel pipe in order to ensure that the outer surface of stainless steel pipe is not damaged and purified, the maintenance of stainless steel pipe should be strengthened in each process of consumption, mainly including the following three aspects: the processing and consumption of stainless steel pipe should have a special consumption workshop (wood board is well used) , with the cooperation of other types of work, and the argon arc welder shall have the certificate issued by relevant departments.Both ends of the steel pipe shall be cut into right angles and burrs shall be removed.The intergranular corrosion of austenitic stainless steel can be prevented by adding Ti,Port-of-SpainPrice of stainless steel plate, Nb and other elements that can form stable carbides (tic or NBC) and avoiding the precipitation of crc on the grain boundary.Focus on Development,Model & mdash; General model; stainless steel. The GB brand is CrNi.Flux coated welding wire (self shielded welding wire) shall be used for backing TIG welding.When the stainless steel fixed port is welded, it will be difficult to ventilate on both sides of the weld. At this time, how to ensure the argon filling protection on the inner side of the weld has become a difficult problem. For a long time facing the national high price, the reasonable price and perfect service of all kinds of stainless steel plates, stainless steel coils, stainless steel belts and stainless steel pipes have been recognized by the majority of customers. In the actual construction on site, we use two welding joints The above problems were successfully solved by plugging with water-soluble paper on the side, ventilation from the weld center and sealing with adhesive tape on the outside (see Table ).

Model & mdash; Martensite (high strength chromium steel), good wear resistance and poor corrosion resistance.Discount,. Raw material problem of stainless steel pipe. If the hardness is too low,Port-of-SpainStainless steel thin wall pipe, orange peel is easy to appear on the surface during deep drawing, which affects BQ performance. BQ with high hardness is relatively good.Stainless steel with domestic (imported) stainless steel belt: stainless steel coil belt stainless steel spring belt, stainless steel stamping belt, stainless steel precision belt, stainless steel mirror belt, stainless steel cold rolled belt, stainless steel hot rolled belt, stainless steel stainless steelStainless steel seamless steel pipe for fluid transportation (instead of gbt- instead of gbt- instead of gb-)Port-of-Spain,Stainless steel pipes and water transmission equipment for fluid transportation such as water and gas are advanced basic water purification materials in the world. They have strong anti-corrosion performance, which can not be compared with cast iron pipes, carbon steel pipes and plastic pipes.When installing and welding the fixed port of stainless steel pipe, it is difficult to vent on the inner side, and some sides are easy to be blocked. In this case, water-soluble paper + blocking plate can be used for blocking. That is, the easy to vent and good side can be blocked with blocking plate, the difficult to vent and bad blocking plate side can be blocked with water-soluble paper, and the weld on the outer side can be blocked with adhesive tape (see Table ) .Stainless steel export is an important part of China's export economy. It plays an important role in stimulating China's economic growth. However, from the current situation of China's stainless steel foreign trade, China's stainless steel export has encountered great resistance.