LeonStainless steel pipe 316Talking about the technological process

In the building water supply pipe system, due to the end of the glorious history of galvanized steel pipe, various new plastic pipes and composite pipes have developed rapidly, but various pipes still have some deficiencies in varying degrees, which are far from fully meeting the needs of water supply pipe system and the national requirements for drinking water and related water quality. Therefore, relevant experts: building water supply pipes will eventually return to the era of metal pipes. According to foreign application experience, stainless steel pipe is recognized as one of the pipes with good comprehensive performance in metal pipe.Several kinds of stainless steel backing welding used for stainless steel backing welding usually adopt TIG process. According to the actual situation of the site, professional L stainless steel pipe, s stainless steel pipe, L stainless steel pipe and other special products, old brands, with advantages in price and guaranteed quality. We can use the following four kinds of backing welding.Leon,Cold drawn (rolled) seamless steel pipe: round billet → Heating → Perforation & rarr; Lead & rarr; Annealing & rarr; Pickling → Oiling (copper plating) → Multi pass cold drawing (cold rolling) → Blank tube & rarr; Heat treatment & rarr; Straightening & rarr; Hydrostatic test (flaw detection) → Mark & rarr; Warehousing.The experimental ice load of concrete decorated stainless steel pipe is the highest in the cold areaWest-End, it can be said to be unique in metals, and its development continues. In order to make stainless steel more neutral in traditional applications,LeonStainless steel polished tube, existing types have been improved, and new stainless steel is being developed to meet the strict requirements of advanced architectural applications. Due to the continuous improvement of production efficiency and quality, stainless steel has become one of the cost-effective materials selected by architects. Stainless steel integrates performance, appearance and use characteristics so stainless steel will still be one of the best building materials in the world.Inspection: after crimping, check the crimping size with a special gauge.Continuous casting shall be adopted for stainless steel pipe fittings, so as to improve the comprehensive yield, 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.

Stainless steel pipes and water transmission equipment for fluid transportation such as water and gas are advanced basic water purification materials in the world. They have strong anti-corrosion performance, which can not be compared with cast iron pipes, carbon steel pipes and plastic pipes.Corrosion fatigue resistant dual phase steel has high corrosion fatigue strength due to its high strength and corrosion resistance. Processing equipment is vulnerable to corrosive environment and loading cycle, and its characteristics are very suitable for such applications. The chemical composition of was determined after DEG/ ° After f ( & deg; / & deg; c) solid melt annealing, the ideal microstructure & alpha/ γ . If the temperature of heat treatment is higher than DEG; F, which may lead to the increase of ferrite composition. Like other duplex stainless steels, alloys are susceptible to intermetallic precipitation. Intermetallic phase at DEG; F and & deg; F, at & deg; At temperature F, we need to test to ensure that there is no intermetallic phase. Refer to ASTM A for the test. For hot forming, we suggest that the forming should be at DEG; Below F. During hot forming treatment, the whole workpiece shall be heated as a whole, which shall be at DEG; F to & deg; F, the alloy is prone to hot tearing. Below this temperature, austenite will fracture. Below DEG; At F, the intermetallic phase will be formed quickly due to the influence of temperature and deformation. After hot forming it should be immediately adjusted to DEG; F and quench to restore its phase balance, toughness and corrosion resistance. We do not recommend stress relief, but if this is necessary, the material should be as low as & deg; F, followed by rapid cooling and water quenching.Good ductility, architects have been using stainless steel to build cost-effective buildings. Many existing buildings fully illustrate the correctness of this choice. Some are very ornamental, such as the Chrysler Building in New York City. However in many other applications, the role of stainless steel is not so eye-catching, but in the aesthetics and performance of buildings For example, because stainless steel has more wear resistance and pressure resistance than other metal materials of the same thickness, it is the preferred material for designers when building sidewalks in places with large population flow.Production process of stainless steel pipe A. preparation of round steel; b. Heating; c. Hot rolling perforation; d. Cutting head; e. Pickling; f. Grinding; g．； h. Cold rolling; i. Degreasing; j. Solution heat treatment; k. Straightening; l. Pipe cutting; m. Pickling; n. Finished product inspection.The accumulation of organic impurities caused by decomposition products and the pollution of some other metal impurities. There is no turnover of long-term stainless steel plate stainless steel coil, stainless steel belt and stainless steel pipe to avoid price difference. The price is % higher than the market price! The price of more than one ton is higher! So that the nickel bath can not get the ideal bright nickel coating, it is necessary to carry out large-scale treatment. In the solution of bright nickel plating on stainless steel pipe, the brightener has developed rapidly and has many varieties. To sum up, the development of brighteners has experienced four generations. Instead of the original product, saccharin and butynediol can be plated with bright nickel with high flatness. Its application flourished in the s and s. It seems that due to the instability of butynediol in the nickel plating bath, short service life and rapid accumulation of organic impurities, the nickel bath needs to be treated frequently. Therefore, epoxy chloropropyl or epoxy is branched with butynediol to synthesize the second-generation nickel plating brightener, such as b brightener. The situation has improved. Be and retain alkynyl. Later, pyridinyl is polymerized to form the third-generation product, Faster light output, which has developed to the fourth generation of products. It has less use, faster light output speed and longer treatment cycle. According to the connection and rolling process, stainless steel pipes with deep plating capacity mainly include hot-rolled, hot-rolled and cold drawn (rolled) stainless steel pipes. According to the difference of metallographic structure of stainless steel, it mainly includes semi Ferritic and semi martensitic stainless steel pipe, martensitic stainless steel pipe, austenitic stainless steel pipe, austenitic ferritic stainless steel pipe, etc.

The domestic prospect is promising, and there is a large demand for building water supply pipes. According to the 'Ninth Five Year Plan' of construction and the outline of long-term objectives in , the demand for each pipe is ~ km from to , including km of cold and hot water pipes in residential construction areas. Some people believe that the development of stainless steel water pipes is of great significance to improve the grade of modern urban buildings.Create brilliance,Crimping: during crimping, the convex part of the pipe fitting is placed in the concave groove of the die, and the jaw is perpendicular to the pipe axis.Batch size: a small number of single batch products will affect the unit price.Deburring: after the pipe is cut off, the burr shall be removed to avoid cutting the sealing ring.Leon,Adjust the ratio of austenite forming elements to ferrite forming elements in the steel to make it have austenite + ferrite dual phase structure, in which ferrite accounts for % - %. This dual phase structure is not easy to produce intergranular corrosion.The bearing capacity of decorative stainless steel pipe ice load is the main control load of offshore platform in severe cold area, which has high requirements for the shear bearing capacity of jacket leg of 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, the empirical formula of shear capacity of concrete-filled steel tubular in pipe is proposed,Leon8k304 mirror stainless steel plate, which is analyzed and verified by ABAQUS finite element modeling software. The results show that the simulation is in good agreement with the test results. In order to study the axial compression performance of stainless steel tube concrete conduit leg and the axial compression performance of stainless steel concrete conduit leg, experiments are used to verify the correctness of the finite element model. The load displacement curves of specimens in groups were compared, and the effects of different void ratio, 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. A compound forming process of double-layer stainless steel pipe for primary circuit main pipeline of station is designed, which solves the problem of limited length of finished products in traditional forging or casting process, and meets the special requirements of complex working environment on pipeline performance. The three roll cross rolling forming process of double-layer casing with outer layer -n austenitic heat-resistant stainless steel and inner layer cr-ni martensitic heat-resistant stainless steel was simulated and optimized by using DEFORM-D finite element simulation software. The internal and external deformation, stress-strain field and temperature field of double-layer stainless steel pipe were analyzed, and the optimal deformation parameter combination was obtained by orthogonal test. The simulation results show that in the process of three roll cross rolling, the large values of equivalent stress, equivalent strain and temperature are concentrated in the area between the outer tube and the roll, and the overall performance parameters of the outer tube are greater than those of the inner tube. The range analysis and variance analysis of orthogonal design test show that the optimal deformation parameter is rough rolling temperature deg; C. Feed angle & deg;, Roll speed: rmin. Objective to improve the existing connection mode of the braking system pipe system of railway freight cars, and accurately shape the end of the stainless steel pipe, so as to obtain the forged joint with better mechanical properties. According to the connection mode of the original pipe system and the plastic forming characteristics of steel pipe, a multi-step upsetting and extrusion process for the end of stainless steel pipe is proposed. The process is numerically simulated by DEFORM-D three-dimensional finite element simulation software,LeonStainless steel inner liner, and the forging forming process is analyzedRefining and transportation industries are in great demand. Secondly, geological drilling, chemical industry, construction industry, machinery industry, aircraft and automobile manufacturing, boiler, medical equipment furniture and bicycle manufacturing also need a large number of various steel pipes. With the development of new technologies such as atomic energy, rocket, missile and aerospace industry, stainless steel pipe plays an increasingly important role in national defense industry, science and technology and economic construction.