The shape of pipe end stainless steel pipe can be divided into smooth pipe and threaded pipe (threaded steel pipe) according to the state of pipe end. Threading pipe can also be divided into ordinary threading pipe (pipe for conveying low pressure such as water and gas, which is connected by ordinary cylindrical or conical pipe thread) and special threaded pipe (pipe for petroleum and geological drilling, which is connected by special thread for important threading pipe). For some special pipes, the pipe end is usually thickened before threading (inner thickening, outer thickening or inner and outer thickening).Since the back is not filled with argon, its advantages are obvious, mainly for its simplicity and low cost, which is suitable for installation on the construction site. However, due to its structural characteristics, flux cored welding wire has high requirements for welders during operation, with fast wire feeding speed and high wire feeding accuracy. It is difficult to master. Welders should be specially trained and skilled before they can participate in welding in Yangba, Nanjing And foreign construction sites, we have successfully solved the problem that argon cannot be passed through the junction and repair port.Cuautitlan-Izcalli,(soft, / / h) and other primary and secondary stainless steel coils.Chloride ions exist in the service environment. Chloride ions exist widely, such as salt, sweat, sea water, sea breeze, soil, even more than ordinary low carbon steel. Therefore, there are requirements for the service environment of stainless steel, and it is necessary to remove dust frequently and keep it clean and dry. (in this way, we can give him a & ldquo; improper use & rdquo;) there is an example in the United States: an enterprise uses an oak container to contain a solution containing chloride ions. The container has been used for nearly years. The ninetieth generation of the last century plans to replace it. Because the oak material is not modern enough, the container leaks due to corrosion days after it is replaced with stainless steel.Soka, such as stainless steel pipe, we promise & ldquo; chromium and nickel & rdquo; Penalty for false and provide quality inspection report and certificate of conformity.. It is our responsibility not to pay attention to the maintenance of the pipe during transportation, mix the pipe with corroded chemical commodities, or soak the two water into the packaging film during transportation in rainy days, which will cause rust. . It is the responsibility of the processor and manufacturer. When cutting stainless steel or iron when manufacturing goods, the scrap iron will cause rust on the surface of the steel pipe. Therefore, it is only reasonable for highly skilled technicians to deepen investigation and discussion, make a reasonable division of responsibilities, and who should be responsible for whose achievements. You can't let steel mills, pipe factories, processors, or users bear the liability for compensation!Stainless steel seamless steel pipe for fluid transportation (instead of gbt- instead of gbt- instead of gb-)

Stainless steel pipe can be divided into equal section pipe and variable section pipe according to the profile shape. Variable section pipes include conical pipes, stepped pipes and periodic section pipes.In polluted air (such as atmosphere containing a large amount of sulfide, carbon oxide and nitrogen oxide), in case of condensed water, acetic acid liquid points will be formed, which will lead to chemical corrosion.Various welding methods of combined welding stainless steel welded pipe have their own advantages and disadvantages. Combined welding methods include argon arc welding plus plasma welding, high-frequency welding plus plasma weldingproduction,It has the characteristics of high efficiency and low cost. At the same time, we use this method to weld joints and repair joints, with a one-time qualified rate of welding), which is worthy of our use.Application field: tubular boiler for pipeline in harsh seabed environment product description: ultra (ultra) critical unit is the basis of modernization of power generation equipment and energy conservation and emission reduction. Among the important pressure parts of ultra (supercritical) boiler, superheater and reheater are the parts with high working temperature and bad working environment. Previously, all such materials used in China were imported from abroad, while only steel material manufacturers in the world have limited capacity. Such materials have a large gap, expensive import prices, difficult procurement and short supply, which seriously affected the production of ultra supercritical boilers and the development of electric energy in China. At present, China's demand for utility boiler tubes is about tons and with the continuous improvement of ultra (supercritical) power generation technology, the demand is expanding. Several large domestic enterprises have invested a lot of human and financial resources in the R & D and production of such products, and have made considerable achievements. On the one hand, it has made its own contribution to the development of national electric power industry, but also brought considerable economic benefits to enterprises.Ferritic stainless steel the Cr content of ferritic stainless steel is generally % ~ %, and the carbon content is less than .%. Other alloying elements are sometimes added. The metallographic structure is mainly ferrite, and there is no & alpha during heating and cooling=& amp; amp; gt;& gamma; The transformation cannot be strengthened by heat treatment. Strong oxidation resistance. At the same time, it also has good hot workability and certain cold workability. Ferritic stainless steel is mainly used to make components with high corrosion resistance and low strength requirements. It is widely used in manufacturing equipment such as production, nitrogen fertilizer and chemical pipelines.

Austenitic stainless steel has good resistance to uniform corrosion but there are still the following problems in local corrosion resistance: intergranular corrosion of austenitic stainless steel. Austenitic stainless steel will have intergranular corrosion when it is kept warm at ~ ℃ or cooled slowly. The higher the carbon content, the greater the tendency of intergranular corrosion. In addition, intergranular corrosion also occurs in the heat affected zone of the weldment. This is due to the precipitation of Cr rich CrC on the grain boundary. The chromium poor area is formed in the surrounding matrix, which is caused by corrosion of the primary cell. This intergranular corrosion phenomenon also exists in the ferritic stainless steel mentioned above.technical service,Cuautitlan-Izcalli304 stainless steel rectangular tube,Application field: launch the market plan of stainless steel pipe in the target market of new products, such as stainless steel kitchen equipment.Logistics cost: different delivery locations determine different transportation costs. The long-distance transportation cost should be yuan per ton and the short-distance transportation cost should be about yuan per ton.. Raw material problem of stainless steel pipe. If the hardness is too low, it is not easy to polish (BQ is not good). If the hardness is too low, orange peel is easy to appear on the surface during deep drawing which affects BQ performance. BQ with high hardness is relatively good.Cuautitlan-Izcalli,Model & mdash; The corrosion resistance is the same, and the strength is better because the carbon content is relatively high.Stainless steel pipe factory stainless steel products are widely used in hardware products, furniture mechanical structure, mechanical accessories, precision medical instruments, fluid transmission pipelines, such as furniture, machinery, natural gas water, gas, steam and other industries.Standard classification - classification: national standard GB industry standard Yb local standard enterprise standard qcb- classification: product standard packaging standard basic standard - standard level (divided into three levels): y level: international advanced level I level: international general level H level: domestic advanced level - national standard: stainless steel bar (level I) gb- stainless welding disc Park (level H)