Usage: it is widely used in automobile industry, aviation industry and other departments.
The method is that the heated tube blank is placed in a closed cylinder, and the perforated rod and rod move to extrude the part from the smaller die hole. This method can produce steel pipes with smaller diameter.
.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 10%, save energy and shorten the production cycle, so as to improve the yield of molten steel.
The existence of medium temperature brittle zone requires strict heat treatment and welding process system to avoid the appearance of harmful phase and damage the performance.
.The power supply with vertical external characteristics is adopted, and the positive polarity is adopted in DC (the welding wire is connected to the negative pole).
SPCDSPCD—& mdash; Cold rolled carbon steel sheet and strip for stamping, equivalent to China 08Al (1323) high quality carbon structural steel.
The rolling of cold drawn (rolled) seamless steel pipe is more complex than that of hot rolled (seamless steel pipe). The first three steps of their production process are basically the same. The difference starts from the fourth step. After the round tube blank is emptied, it needs to be started and annealed. After annealing, apply oil. Then it is followed by multi pass cold drawing (cold rolling) and special heat treatment. After heat treatment, it will be straightened.
The heat-treated alloy should be 1900 DEG at low temperature; Annealing treatment at the temperature of F,7 mm stainless steel plate, then rapid cooling and water quenching. This treatment is applied to solid melt annealing and stress relief. Stress relief treatment, such as below 1900 DEG; F, which is easy to lead to the precipitation of harmful metal or non-metallic phases.
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 18 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, 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 19 specimens in 5 groups were compared, 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. A compound forming process of double-layer stainless steel pipe for primary circuit main pipeline of station is designed, 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 21-2n austenitic heat-resistant stainless steel and inner layer 12cr-12ni martensitic heat-resistant stainless steel was simulated and optimized by using DEFORM-3D 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 1100 deg; C. Feed angle 8 & deg;, Roll speed: 200rmin. 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, a multi-step upsetting and extrusion process for the end of stainless steel pipe is proposed. The process is numerically simulated by DEFORM-3D three-dimensional finite element simulation software, and the forging forming process is analyzed
Hot dip galvanized sheet hot dip galvanized sheet, which immerses the sheet into the molten zinc bath to make its surface adhere to a layer of zinc. It is mainly produced by continuous galvanizing process, that is, the rolled steel plate is continuously immersed in the zinc melting bath to make galvanized steel plate. Liaocheng Suntory stainless steel plate weighing method: 304 stainless steel plate: thickness (mm) x width (m) x Length (m) x density 316 stainless steel plate: thickness (mm) x width (m) x Length (m) x density 430 stainless steel plate: thickness (mm) x width (m) x Length (m) x density stainless steel basic weight (density)
equipment maintenance .2: stainless steel pipe: seamless pipe and seamless pipe (longitudinal welded pipe,N08367 stainless steel plate, decorative pipe, welded pipe welded pipe, bright pipe). There are more than 200 kinds of standard specifications of stainless steel pipe, all sizes, and the small pipe is more expensive, especially the capillary. The capillary is poor to be made of 304 material, otherwise the pipe is easy to burst. You can also customize non-standard pipes for customers. Seamless pipes are mainly used in industry, and the surface is foggy, Not bright. The surface of the slotted pipe is a bright surface, and there is a thin welding line in the pipe, which is mainly used for decorative materials. In addition, the pressure resistance of industrial fluid pipe depends on the wall thickness. 310 and 310S are high temperature resistant pipes. They can be used normally below 1080 degrees, and the high temperature resistance can reach 1150 degrees
Oxygen plus gas flame can not cut stainless steel plate because stainless steel is not easy to be oxidized.
The rolling of cold drawn (rolled) seamless steel pipe is more complex than that of hot rolled (seamless steel pipe). The first three steps of their production process are basically the same. The difference starts from the fourth step. After the round tube blank is emptied, it needs to be started and annealed. After annealing, pickling shall be carried out with special acid. After pickling, apply oil. Then it is followed by multi pass cold drawing (cold rolling) and special heat treatment. After heat treatment, it will be straightened.
Do a good job of preliminary data research. In the highly competitive market, stainless steel pipe should go deep into the hinterland. It is essential and crucial to do a good job of pre market data research; Only by fully grasping consumer demand trends, habits and other data can we have more confidence to compete for market share. Therefore, the editor of stainless steel pipe believes that in-depth data mining and comprehensive market analysis are powerful for stainless steel control manufacturers in this movement.
Interpretation and observation.In view of the continuous vibration of stainless steel pipe shopping malls, even & ldquo; Roller coaster & rdquo; Market,Stainless steel grooved pipe, stainless steel pipe market participants are implementing it carefully & ldquo; Fast forward and fast Exit & rdquo; Therefore, the national stainless steel pipeline inventory has been at a low level. High price various specifications of stainless steel plate, stainless steel coil, stainless steel belt and stainless steel pipe. Waste merchants, industrial companies, enterprises and power departments are welcome to visit and negotiate with the company! At the beginning, the social inventory of stainless steel pipes should progress with the progress of economic aggregate, and with the progress of total output and demand. However, stainless steel pipe inventory did not increase too much, or even did not increase, indicating a relative decline in social inventory level. Low inventory has indeed played a role in market stability.
Stainless steel pipe, which was produced and used in China at the end of the 1990s, is a new family emerging in the field of pipe materials. It has been widely used in building water supply and direct drinking water pipelines.
Classification and grading of standards 4-1 classification: national standard GB industry standard Yb local standard enterprise standard Q / cb4-2 classification: product standard packaging standard basic standard 4-3 standard level (divided into three levels): y level: international advanced level I level: international general level H level: domestic advanced level 4-4 national standard stainless steel bar (level I) gb4241-84 stainless welding disc Park (level H)
.In the past few years, the United States has imposed anti-dumping and countervailing duties on a variety of steel pipe products exported from China, rectangular pipe pipeline pipe, welded stainless steel pressure pipe, oil well pipe and seamless steel pipe. These foreign double back pressures have greatly reduced the number of steel pipes exported by China.
Hot rolled belt, stainless steel etching belt stainless steel stretching belt, stainless steel polishing belt, stainless steel soft belt, stainless steel hard belt, stainless steel medium hard belt, stainless steel high temperature resistant belt, etc.
Chinese brand cold rolled non oriented silicon steel strip (sheet) means: DW + 100 times of iron loss value (at the frequency of 50Hz, the magnetic induction peak with sinusoidal waveform is the unit weight iron loss value of 5t) + 100 times of thickness value. For example, dw470-50 represents cold-rolled non oriented silicon steel with iron loss value of 7W / kg and thickness of 0.5mm. Now the new model is 50W470.