Linyi medium thick wall rectangular tube manufacturer wholesale manufacturer
1. Pay attention when customers choose square tubes! Choose the right square tube for your request. 2. Some anti-corrosion measures shall be taken for pipes during operation. 3. Do not overload when using. For example, only by weighing can you be overweight. 4. Do not weld or pull bridge wires on the pipe at will, which may cause damage and defects to the pipe. 5. It is important to pay attention to whether the pipes are intact and whether the quality meets the national standards when choosing to purchase. Can we disagree with your request.
Linyi medium thick wall rectangular tube manufacturer wholesale manufacturer
A large number of pipes are used to escort fluids, such as oil, natural gas, water, gas, steam, etc. In addition, when the bending and torsional strength are the same, the weight is light, so they are also commonly used to manufacture mechanical parts and engineering structures. It is also used for consumption of various conventional weapons. Square tubes are commonly used in various building structures and engineering structures, such as building steel for building beams, bridges, transmission towers, lifting and transportation machinery, ships, industrial furnaces, reaction towers, container racks, warehouse shelves, etc. Square tubes play a very important role in the construction industry.
Linyi medium thick wall rectangular tube manufacturer wholesale manufacturer
There are more and more manufacturers of seamless square and rectangular tubes. The demand and market sales are accumulated day by day, which means that the manufacture of seamless square and rectangular tubes is stopped by virtue of many advantages and characteristics of seamless square and rectangular tubes. Seamless square and rectangular tubes can be said to be icing on the cake in terms of processing technology and manufacturing process. The wear resistance and ductility of the process are relatively good. The products manufactured are smooth in appearance and superior in performance! The seamless square and rectangular tube has good strength, toughness, plasticity, welding and other process properties, and has good ductility. Its alloy layer is firmly attached to the steel base. Therefore, the seamless square and rectangular tube can stop cold punching, rolling, wire drawing bending and other forming without damaging the coating. It is suitable for ordinary processing such as drilling, cutting, welding, cold bending and other processes. The seamless rectangular tube after hot galvanizing has a bright and beautiful appearance. Seamless square and rectangular tube can be divided into seamless tube and welded tube. Seamless square and rectangular tube is extruded from seamless round tube. Generally, it can be selected and used according to detailed requirements. Due to its excellent performance, seamless rectangular tubes are widely used in such aspects as glass curtain walls, power towers, communication networks, water and gas escorts, wire casings, houses, bridges, metal structures, etc.
Linyi medium thick wall rectangular tube manufacturer wholesale manufacturer
Square tube is a kind of tube that we have used a lot in recent years, so we would like to know how this kind of tube can be used in our life? Let's briefly introduce the role of this pipe in our life. Square tube is a special tube with hollow cross section. It is precisely for this special design that the application of this tube in our life has been expanded a lot. Especially in our shipbuilding and construction industries, as well as in the military and aviation fields, there has been a great expansion. The main function is to improve the service life and anti-corrosion performance of square tubes, which also makes the performance of square tubes further improved, and the quality and price of square tubes are directly affected by the good or bad layer. Assuming that to improve the quality of the pipe, it is necessary to reduce the iron content in the zinc liquid by reducing the zinc slag, that is, to reduce the factors of iron dissolution. This ability can form a better layer on the surface of our square pipes, and it is also because of this that our pipe manufacturers have a big direction to transform this kind of pipe.
Linyi medium thick wall rectangular tube manufacturer wholesale manufacturer
1. Solid bending: solid bending, which literally means that the bending is compacted, and the inner and outer rollers and the inner and outer walls of the tube blank are compacted in both directions during solid bending. 1) The advantage of real bending is small elasticity, accurate forming, and only accurate roll shape is required. The R of internal angle forming is relatively accurate. 2) The defect of real bending is tensile/thinning effect. 1、 The actual bending will produce tension at the bend, and the tensile effect will shorten the longitudinal length of the bending line; 2、 The metal at the solid bend will become thinner due to stretching. 2. Empty bending: empty bending is the bending moment formed by the one-way contact between the outer roll and the outer wall of the tube blank to bend the strip. Empty bending will cause the bending line to shrink, and the shrink effect will make the bending line longitudinally extend, and the metal at the bend will appear to accumulate and thicken, which is the shrink/thicken effect of empty bending. 1) The advantage of empty bending is that it can stop the bending of side length when the real bending cannot be stopped, such as the synchronous bending and finishing of the upper/side edges of square and rectangular tubes. Empty bending can also bend the inner corner with R<0.2t without breaking the pipe wall. 2) The defect of empty bending is that when the upper side/side side are synchronously empty bending, because the upper roll and the lower roll produce pressure at the same time, the forming force is easy to exceed the critical point, forming the edge instability concave, and also will affect the stable operation of the unit and the forming quality. This is also the different characteristics of square and round tubes during empty bending.
Linyi medium thick wall rectangular tube manufacturer wholesale manufacturer
1. During square forming, the corner bending is related to the neutral layer of the strip steel. The inner corner is pressed and the outer corner is pulled. No matter what method you use for square forming, the result of the corner force is that the outer tensile strip steel is thinner. From the physical phenomenon, the metal lattice changes and cold work hardening occurs. Especially when the general pass strip is hard, the corner may be broken. In addition, the dimensional accuracy of the straight square is mostly handled by sizing: first, it increases the equipment load; second, the steel strip also produces local cold work hardening, which affects the internal quality of the profile. 2. During the round to square forming, the main pipe is compressed and deformed in the pass. The pass design considers the elastic limit of the base metal, that is, the pressure must not exceed the elastic limit. If the elastic limit is exceeded, the base metal will "lose stability" and form waste products. It can be seen that the physical phenomenon of round to square forming does not change the strip. In addition, the contour and dimensional accuracy of the round to square shape is guaranteed by the hole type and adjustability, so its contour dimensional accuracy is high. Moreover, because the deformation of round to square is stopped under pressure, the thickness of its corner has an increasing trend instead of thinning, and the load resistance of profiles with the same thickness and the same specification can be significantly improved compared to the straight square.
