Model & mdash; General model; stainless steel. The GB brand is CrNi.When improved, suslx (cr Ti, Nb LC) and susl have been applied to frozen shells. Ferritic stainless steel has body centered cubic structure. When the material properties become weaker, sharp cracks will expand rapidly and cause brittleness. Austenitic series stainless steel will not produce brittleness because it has face centered cubic structure. Austrian stainless steel SUSL (cr-ni LC) and SUSL (cr-ni-mo-lc) shows that it still has superior impact characteristics at low temperature. However, pay attention to the precipitation of ferrite or martensite due to processing, and the tendency of embrittlement due to sensitized carbide or & sigma; equal heterogeneous precipitation.Santiago-de-Maria, noodle soup, phlegm, etc.) adhered to the surface of stainless steel constitute organic acids in the presence of water and oxygen. For a long time, the corrosion of organic acids on the metal surface.There is a bright future for domestic substitution for imported stainless steel pipes. Since the s, China has solved the problem of reducing wall thickness and cost; High diameter to wall ratio and high precision & rdquo; The technical problems of stainless steel pipe make the stainless steel pipe applied and developed rapidly. If a pipeline can be fully applied, localization is indispensable. At present some domestic have the ability to produce and further develop stainless steel pipes and fittings.Daoukro,The petrochemical industry, including the chemical fertilizer industry, has a great demand for stainless steel pipes. Stainless steel pipes are mainly used in this industry, including, , l, etc., with an outer diameter of about ￠ - ￠ and a wall thickness of about mm-mm (generally medium and low pressure transmission pipes with a specification of more than & phi; mm). The specific application fields are: furnace pipes, heat exchanger pipes, etc.The corrosion resistance of stainless steel depends on chromium, but because chromium is an integral part of steel, the protection is different.Application field: launch the market plan of stainless steel pipe in the target market of new products, such as stainless steel kitchen equipment.

Application fields: chemical industry, construction industry.Physical properties the total heat transfer coefficient of metal depends not only on the thermal conductivity of metal, but also on other factors. In most cases, the heat dissipation coefficient of film rust scale and the surface condition of metal. Stainless steel can keep the surface clean, so its heat transfer is better than other metals with higher thermal conductivity. Liaocheng Suntory stainless steel provides the technical standard of stainless steel plate Stainless steel plate high-strength stainless steel plate with excellent corrosion resistance, bending workability, toughness of welding parts and stamping workability of welding parts. Specifically, Si, Mn, P, s, Al and Ni with an appropriate content of less than .% of C, more than % of Cr and less than % shall meet & le; Cr Mo Si & le; & le; Ni (c n) . (Mn Cu) & le; Cr . (Ni Cu) Mo & Ge; , . & le; C, n & le; . stainless steel plate is heated to ~ ℃, and then cooled at a cooling rate of more than ℃ / S. in this way, it can become a high-strength stainless steel plate with martensite content of more than %, high strength of more than mpa, corrosion resistance and bending processability, and excellent toughness of welding heat affected zone. It can be significantly improved by reusing Mo, B, etc High stamping performance of welded parts.Flux coated welding wire is used for backing welding, and argon gas is not used inside the weld. The welder's operation is simple and fastCustomer first,Ferritic stainless steel the Cr content of ferritic stainless steel is generally % ~ %, 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.. 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,Santiago-de-Maria316L stainless steel decorative pipe, orange peel is easy to appear on the surface during deep drawing, which affects BQ performance. BQ with high hardness is relatively good.It has the characteristics of high efficiency and low cost. At the same time, it can also well ensure the welding quality (in the capacity expansion and reconstruction project of Urumqi petrochemical, we use this method to weld joints and repair joints, with a one-time qualified rate of welding), which is worthy of our use.

Continuous casting shall be adopted for stainless steel pipe fittings, so as to improve the comprehensive yield,Santiago-de-Maria304 stainless steel welded pipe, and cooperate with out of furnace refining, which significantly improves the production efficiency, omits the blank opening process and saves a lot of energy consumption.Management Department,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.It has excellent stress corrosion cracking resistance. Even duplex stainless steel with low alloy content has higher stress corrosion cracking resistance than austenitic stainless steel especially in the environment containing chloride ions. Stress corrosion is a prominent problem that ordinary austenitic stainless steel is difficult to solve.Decorative stainless steel pipe: usually the outer wall is relatively bright, the price also varies greatly. The general production process of decorative stainless steel pipe is ordinary welded stainless steel pipe. Guangdong stainless steel product pipe stainless steel product pipe: generally so its name is considered. Decorative stainless steel pipe is used for decorative purposes. The stainless steel pipe for general decorative purposes is relatively thin. Because it is different from the manufacturing process of stainless steel product pipe, the surface of stainless steel product pipe is also a bright surface, and a small number of pipes with acid pickling industrial surface. As mentioned above, stainless steel product pipe belongs to the purpose of stainless steel products, because the outer diameter size, mechanical properties, acid, alkali and corrosion resistance of stainless steel pipe are relatively good Therefore, stainless steel pipes are generally used as anti-corrosion materials or hardware products in large-scale production enterprises. The production process of stainless steel pipes is one-time forming, and nitrogen protection is also added during welding.Santiago-de-Maria,Marking: in order to make the steel pipe complete the socket of the pipe fitting, the length must be marked and marked at the pipe end.Stainless steel seamless steel pipe for fluid transportation (instead of gbt- instead of gbt- instead of gb-)Model & mdash; Martensite (high strength chromium steel), good wear resistance and poor corrosion resistance.