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.Pipeline direct drinking water has developed rapidly. With the development of national economy, pipeline direct drinking water has developed rapidly in domestic cities such as Beijing, Shenzhen, Shanghai and Chongqing, and economically developed medium-sized cities have also actively planned to catch up. In direct drinking water, stainless steel pipe system is undoubtedly second to none. At present, domestic high-grade hotels and public places have been equipped or are equipped with direct drinking water pipes.Velenje,Production and manufacturing can be divided into hot-rolled pipe, cold-rolled pipe, cold drawn pipe, pipe, etc.The operators are mainly plumbers and argon arc welders, with the cooperation of other types of work, and the argon arc welder shall have the certificate issued by relevant departments.Adelaide,Stress relief treatment. Stress relief treatment is a heat treatment process to eliminate the residual stress of steel after cold working or welding. It is generally heated to ~ ℃ for tempering. For steels without stabilizing elements Ti and Nb, the heating temperature shall not exceed ℃ so as to avoid intergranular corrosion caused by chromium carbide precipitation. For cold worked and welded parts of ultra-low carbon and stainless steel containing Ti and Nb, they need to be heated at ~ ℃ and then cooled slowly to eliminate stress (the upper limit temperature is taken for eliminating welding stress), which can reduce the tendency of intergranular corrosion and improve the stress corrosion resistance of steel.Section shape stainless steel pipe can be divided into round pipe and special-shaped pipe according to the section shape. Special shaped tubes include rectangular tubes, rhombic tubes, elliptical tubes, hexagonal tubes, octagonal tubes and various cross-section asymmetric tubes. Special shaped pipe is widely used in various structural parts, tools and mechanical parts. Compared with circular pipe, special-shaped pipe generally has large moment of inertia and section modulus, and has large bending and torsion resistance, which can greatly reduce the structural weight and save steel.Welding of stainless steel pipe argon arc welding stainless steel pipe: it is required to have deep penetration, no oxide inclusion, and the heat affected zone can be as small as possible. Argon arc welding maintained by tungsten inert gas has good compliance, high welding quality and good penetration function. Its commodities are widely used in chemical, nuclear and food industries.

The corrosion resistance is the same, is better than that of ordinary l austenitic stainless steel, such as acetic acid and formic acid, it can even replace high alloy austenitic stainless steel and even corrosion resistant alloy.Model & mdash; It has better temperature resistance.production,Water preparation storage, transportation, purification, regeneration, seawater desalination and other water industry excellent materials. The demand is about tons.First of all let's understand what stainless steel is. Generally speaking, steel that will not rust is called stainless steel, but in an academic sense, steel resistant to weak corrosive media such as air, steam and water and chemical corrosive media such as acid, alkali and salt. Also known as stainless acid resistant steel. In practical application, 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 alloying elements contained in the steel. Chromium is the basic element for stainless steel to obtain corrosion resistance. When the chromium content in the steel reaches about %, chromium reacts with oxygen in the corrosive medium to form a thin oxide film (self passivation film) on the steel surface, which can prevent further corrosion of the steel matrix. In addition to chromium, the commonly used alloy elements include nickel,VelenjeSUS304 stainless steel pipe, molybdenum, titanium, niobium, copper, nitrogen, etc., which has strict requirements on the chemical composition and temperature of molten steel; In order to prevent secondary oxidation of molten steel, non oxidation protection pouring is required during continuous casting production; Strict requirements for refractory materials such as ladle, tundish, nozzle and submerged nozzle.

After fine tuning the molten steel temperature in the argon blowing station it is lifted to the ladle rotary table for continuous casting.resources,Austenitic stainless steel austenitic stainless steel is developed to overcome the lack of corrosion resistance and brittleness of martensitic stainless steel. The basic composition is crl% and Ni%, which is referred to as - steel for short. Its characteristic is that the carbon content is less than .%, and the single-phase austenite structure is obtained by the combination of Cr and Ni.s, , and other materials.The specific steps of continuous casting billet process of stainless steel pipe fittings are as follows: according to different steel grades, the vibration process of mold is matched with protective slag, which can improve the yield of %, save energy and shorten the production cycle, so as to improve the yield of molten steel.Velenje,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, medical oil, natural gas, water, gas, steam and other industries.Rheological and thermal changes in the quenching process of decorative stainless steel pipe the cooling characteristics of submerged quenching of stainless steel plate are numerically simulated by using the Euler multi fluid model in AVL fire software, and the numerical results are compared with the experimental results. In the research, the quenching medium is water. The mass, momentum and energy equations of gas-liquid two-phase of quenching medium and the quenching heat conduction equation of stainless steel workpiece are solved by numerical simulation. Based on the principle of equal heat flux between quenching medium and workpiece, the temperature field of quenching medium and workpiece is solved by coupling. The comparison between the numerical simulation and experimental results of decorative stainless steel pipe shows that the numerical simulation results of workpiece temperature are in good agreement with the experimental data. The model can reliably simulate the quenching process of workpiece, and can be extended to the multiphase flow simulation in complex system to guide the actual production. The single pass thermal simulation compression experiment of Cr super martensitic stainless steel was carried out by Gleeble thermal simulation tester to study the thermal deformation behavior at ~ ℃ and strain rate of . ~ s-, and the microstructure evolution law of grains under different conditions was analyzed; Based on Sellars hyperbolic sinusoidal model, the flow stress constitutive equation of Cr super martensitic stainless steel was constructed. The results show that the peak stress decreases with the increase of deformation temperature and the decrease of strain rate; With the increase of deformation temperature, the grain grows and coarsens gradually. With the increase of strain rate, the dynamic recrystallized grains are obviously refined. The thermal deformation activation energy Q = . JMOL of decorative stainless steel pipe is calculated, and the expression of Zener Hollomon parameter is obtained. Different feedstocks were prepared by mixing crmnmon nickel free austenitic stainless steel powder prepared by aerosol and wax based binder. The effects of binder ratio and powder loading on the rheological properties of feed were studied by rh high pressure capillary rheometer. Non Newtonian index n, viscous flow activation energy E and comprehensive rheological factor alpha are calculated by second order model regression analysis; STV. The results show that the prepared feeds are pseudoplastic fluid. The binder system was composed of % microcrystalline wax (MW), % high density polyethylene (HDPE), % ethylene vinyl acetate copolymer (EVA) and % stearic acid (SA). The powder loading was vol%. The feed had good comprehensive rheological properties. In order to study the cementitious properties of stainless steel AOD slag, stainless steel AOD slag was used to replace some cement,VelenjeS30409 stainless steel plate, and its effects on the working properties and mechanical properties of cement mortar were studied. The results show that using stainless steel AOD slag to replace cement from ~ %, with the increase of the content of stainless steel AOD slag, the water consumption of standard consistency of cement first decreases and then increases. When the content is %, the water reduction effect of stainless steel AOD slag is good; With the increase of the content of stainless steel AOD slag, the strength of cement mortar decreases in turn, indicating that the cementitious activity of stainless steel AOD slag is small.The main control load of the platform has high requirements for the shear bearing capacity of the guide leg of the offshore platform. In order to study the factors affecting the shear capacity of the jacket legs of the stainless steel pipe in pipe concrete-filled steel tubular offshore platform, a total of concrete-filled steel tubular shear members were fabricated to study the effects of outer steel pipe material, concrete strength, void ratio and shear span ratio on the shear capacity of concrete-filled steel tubular in pipe. It is found that the shear strength of members increases with the decrease of void ratio and the increase of concrete strength; The larger the shear span ratio, the smaller the shear strength. Combined with the test, experiments are used to verify the correctness of the finite element model. The load displacement curves of specimens in groups were compared,Velenje600 stainless steel plate, and the effects of different void ratio concrete strength, diameter thickness ratio and bone index on the axial compression performance of concrete-filled stainless steel tubular short columns under axial compression were analyzed. The results show that with the increase of concrete strength, the bearing capacity of specimens increases, but the ductility of specimens decreases; With the increase of void ratio and diameter thickness ratio, the bearing capacity of the specimen decreases; The bearing capacity of stainless steel tube concrete can be effectively improved by adding steel bone; Increasing the bone matching index of steel bone can improve the bearing capacity of the specimen. Based on the jacket offshore platform, it is proposed to replace the four hollow steel conduit legs of the original offshore platform with concrete-filled steel tube in stainless steel tube to form a new composite offshore platform with concrete-filled steel tube in stainless steel tube, so as to improve the ice resistance and disaster prevention ability of the offshore platform. The scale test on the offshore platform shows that the composite offshore platform of concrete filled steel tubular in stainless steel pipe (hereinafter referred to as the composite offshore platform) has better anti icing performance than the ordinary jacket offshore platform. Taking push as an example the peak acceleration and displacement of the upper deck of the composite offshore platform of concrete filled steel tubular in stainless steel pipe are reduced by % and % respectively. The analysis of ABAQUS finite element and experimental simulation results shows that the error of the two results can be basically within %. Through the simulation analysis of the ultimate bearing capacity of the stainless steel tube in tube concrete-filled steel tubular composite platform and the original offshore platform, it can be seen that the stainless steel tube in tube concrete-filled steel tubular composite platform has stronger ultimate bearing capacity. Therefore, longitudinal strain and circumferential strain of the short columns under axial compression were measured. The effects of steel tube wall thickness and concrete strength on the bearing performance of the short columns were investigated. Reference was made to the European Code for design of concrete filled steel tubes (Eurocode), American code (ACI -) and Japanese code (aij-cft), China's relevant regulations D --dlt- and CECS calculate the preparation of stainless steel pipe construction, prepare construction scheme and construction schedule scheme, and establish quality standards.