The back side is not protected by argon, and the flux coated welding wire (self protective flux cored welding wire) + TIG process is adopted. In the s, the backing welding wire has been developed. Recently, China has also developed the stainless steel backing welding wire (i.e. flux coated welding wire, such as tgftgftgftgf, etc.) It has been applied to the actual construction and achieved good results. We have successfully applied it in the capacity expansion and reconstruction project of Urumqi Petrochemical.Accounting for about % - % of the total steel, it is widely used in the national economy. Because the steel pipe has a hollow section, it is suitable for gas and solid transmission pipelines; at the same time, compared with the round steel of the same weight, the steel pipe has large section coefficient and high flexural and torsional strength, so it has also become an important material in various machinery and building structures. Stainless steel is used Under the condition of equal weight,MasayaStainless steel chimney tube, the structure and components formed by pipe have a larger section modulus than solid parts. Therefore, stainless steel pipe itself is an economic section steel that saves metal. It is an important part of steel, especially in oil drilling, production and metallurgyMasaya,L stainless steel pipe has become a very popular material in the market because of its many advantages. Today, Xiaobian will tell you in detail about L stainless steel pipe installation technology.Model & mdash; Martensite (high strength chromium steel), good wear resistance and poor corrosion resistance.Abu Tij,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.Austenitic stainless steel can be used to manufacture stainless spring, clock spring and steel wire rope in aviation structure after deformation strengthening. If welding is required after deformation, spot welding process and deformation can only be used to increase the tendency of stress corrosionThe corrosion resistance is the same, and the strength is better because the carbon content is relatively high.

Deformation strengthening of austenitic stainless steel stainless steel has good cold deformation performance. It can be cold drawn into very thin steel wire and cold rolled into very thin steel strip or steel pipe. After a large amount of deformation, the strength of the steel is greatly improved especially when rolling in the subzero temperature zone. The tensile strength can reach more than MPa. This is because in addition to the cold hardening effect, there are also superimposed Deformation induced M transition.Stainless steel pipe is a common material in stainless steel with a density of GCM, which is also called stainless steel in the industry. High temperature resistance of ℃, with the characteristics of good processing performance and high toughness, it is widely used in industry, furniture decoration industry and food and medical industry.The corrosion resistance of stainless steel depends on chromium, but because chromium is an integral part of steel,Household worries.Hardness stainless steel pipes are usually measured by Brinell, Rockwell and Vickers hardness indexes.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.

According to the purpose, it can be divided into oil well pipe (casing, oil pipe and drill pipe), pipeline pipe,Masaya201 stainless steel welded pipe, boiler pipe, mechanical structure pipe, hydraulic prop pipe, gas cylinder pipe, chemical pipe (high-pressure chemical fertilizer pipe, petroleum cracking pipe) and marine pipe.Quality Assurance,Model & mdash; The addition of sulfur improves the processability of the material.After the installation of stainless steel water pipe cleaning pipeline, and clean it with clean water after disinfection. If it is not put into use for a short time, compressed air must be used to blow out the residual water in the pipe, so as to prevent the corrosion reaction between oxygen free in the pipe and other media.Stainless steel has been used as a structural material for building new buildings and repairing historic sites for more than years. Early designs were calculated according to basic principles. Today, design codes, are usedMasaya,W = (outer diameter wall thickness) & times; wall thickness & times; . = KGM (weight per meter).Water preparation,MasayaStainless steel penstock, storage, transportation, purification, regeneration, seawater desalination and other water industry excellent materials. The demand is about tons.After that, the second widely used steel is mainly used in food industry, pharmaceutical industry and surgical equipment. Adding molybdenum makes it obtain a special corrosion-resistant structure. Because it has better chloride corrosion resistance than stainless steel pipe, it is also used as & ldquo; marine steel & rdquo;. SS is usually used in nuclear fuel recovery devices. Grade stainless steel Steel pipes usually also meet this application level.