Stress relief treatment. Stress relief treatment is a heat treatment process to eliminate the residual stress of steel after cold working or welding. Generally, it is heated to ~ ℃ for tempering. For steels without stabilizing elements Ti and Nb, the heating temperature shall not exceed ℃, so as to avoid precipitation of chromium carbide and intergranular precipitationStainless steel pipes are divided into ordinary carbon steel pipes, high-quality carbon structural steel pipes, alloy structural pipes, bearing steel pipes, stainless steel pipes, coated and coated pipes to save precious metals and meet special requirements. There are many kinds of stainless steel pipesJapan,: stainless steel strip (stainless steel roll): or roll strip, roll material, roll plate, roll plate There are many names, and the hardness of the strip varies from dozens to hundreds. The customer needs to determine which hardness to use first (K specular luminosity)The corrosion behavior and law of electroless plated PD sample on L stainless steel in medium and mixed acid medium were studied by polarization curve and electrochemical impedance spectroscopy (EIS). Its performance in these two typical non oxidizing acid media was evaluated. The results show that L stainless steelSevastopol,The surface quality of the product polished by the polishing machine meets the design requirements, and can be applied to the surface treatment of precision tubes in aerospace aviation, medicine,Japan309S high quality stainless steel pipe, military industry and other fields. Aiming at the defect characteristics of stainless steel pipe blank, such as insufficient cleanliness, perforation crack, skin,Japan304L stainless steel, rolling surface crack and so onStainless steel plate manufacturers suggest that customers choose stainless steel plate for outdoor use. Due to the same environment, the corrosion resistance of stainless steel plate is several times stronger than that of stainless steel plate.The removal technology of tritium remaining in the pipe wall was studied, which is easy to be removed during acid pickling. Due to the action of high temperature, the formed oxide is partially peeled off and settled at the bottom of the furnace in the form of sediment. Alkaline salt melting pretreatment process flow: steam degreasing → Preheat（The metallurgy of tundish can accurately the molten steel temperature, realize non-oxidation pouring and further reduce the content of inclusions.The Chinese brand cold rolled non oriented silicon steel strip (sheet) indicates: DW + iron loss value (at the frequency of Hz, the waveform is sinusoidal, dw- indicates that the iron loss value is W / kg,High quality and low price,Cold rolled steel strip shall be delivered in the state of heat treatment (annealing, normalizing and tempering after normalizing), and shall be delivered smoothly., the steel resistant to weak corrosion medium is often called stainless steel, while the steel resistant to chemical medium is called acid resistant steel. Due to the difference in chemical composition between the two, the former is not necessarily resistant to chemical medium corrosion, while the latter is generally stainless. The corrosion resistance of stainless steel depends on the content in the steelHigh frequency welding high frequency welding: with relatively high power supply, it can achieve high welding speed for steel pipes with different materials, outer diameter and wall thickness. Compared with argon arc welding, it is more than ten times of its high welding speed. Therefore, stainless steel pipes for general use have a high consumption rate. because

　　.Design brand,The surface quality of the product polished by the polishing machine meets the design requirements, and can be applied to the surface treatment of precision tubes in aerospace, aviation, medicine, military industry and other fields. Aiming at the defect characteristics of stainless steel pipe blank, such as insufficient cleanliness, perforation crack skin, rolling surface crack and so onThe volume fraction of dynamic recrystallization of S stainless steel pipe during hot working can be well. Electroplating method and the combination of the two methods in the aperture of -mu; The dense palladium membrane was prepared on porous stainless steel substrate of M. The porous stainless steel was treated by seeds and XRDStandard dimensions and common specifications are: * mm, * mm ( feet), * mm ( feet),Japan403 high quality stainless steel plate, * mm and * mm.Japan,Therefore, there are requirements for the use environment of stainless steel, and it is necessary to remove dust frequently and keep it clean and dry.According to the structure of steel grade, austenite ferrite ferrite martensite and precipitation hardening note: precipitation hardening (precipitation strengthening): refers to the dispersion and distribution of solute atom segregation zone and / or desolved particles in supersaturated solid solutionBuilding materials, kitchen HL hair line grinding grinding materials with appropriate particle size for hair line grinding ( ~ #). There are many buildings with grinding particles. Building materials are close to mirror grinding, grinding with # rotary polishing wheel for art mirror grinding for decoration, and polishing wheel for mirror