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    The world's best movable dam - hydraulic lifting dam was born in China. Its advanced nature is a qualitative breakthrough to the traditional movable dam. It is manifested in the following aspects: 1. Low cost The overall cost of hydraulic lifting dams is only a fraction of that of sluices and rubber dams of the same size. The movable dam part is the same as the ordinary flap door, which is lower than the hydraulic flap door. The width of the top of the fixed weir is only required to be equal to the height of the movable dam, so the overall engineering investment is the lowest. 2. The hydraulic lifting dam is firm and reliable in structure and has a long service life. After the dam surface is raised, a stable supporting pier structure and a fixed triangular support are formed. The mechanical structure is the most scientific and the ability to resist flood shock is extremely strong. The service life is more than 50 years. 3. The flood discharge capacity of the  hydraulic lifting

   Stainless Steel Dutch Weave Wire Mesh Product: Dutch Weave Wire Mesh (Stainless Steel) Material: Aisi321, 302, 304, 304L, 316 and 316L stainless steel wire, black wire, Al5Cr23, Ni80Cr20, Ni60Cr15 and etc. Weave: plain dutch, twilled dutch, reverse, five heddle weave. Characteristics: acid resisting, alkali resisting, heat resisting and wear resisting. Application: used for industries of mining, oil, chemical, food, phamaceutical, machine making, scientific research, aviation, Dutch Weave Screen,etc. Dutch Weave Wire Mesh is one of our best products, it is exported to Russia, Ukraine, Italy, France and other countries in the world.   Dutch Weave Wire Mesh(Dutch Weave Screen) is mainly made of stainless steel. We also supply  stainless steel wire mesh . GOLDFLOWER  dutch woven wire mesh is widely used in Neutral chloride environment, oil refining industry, petrochemical and chemical industry, chemical industry transportation pipeline, oil and gas industry, pulp and paper industry, ch

  Railroad thermite welding  is a common method in railway construction. As we know, there is an interface at the rail joint between two steel rails. There is an issue in the railway industry. When the train passes away, the enormous pressure will cause shake even crack. These problems will threaten the service life of the steel rails and the safety of trains. So how solving the interface is an important project for rail technology.   With the development of the manufacturing industry, there are two main methods to weld the railroad tracks. One is electric soldering, and another way is thermite welding.  What is thermite welding?  Railroad thermite welding is regarded as the most high-efficiency method to weld railroad tracks. Because of the high efficiency, reliable quality and high adaptability, railroad thermite welding becomes the most popular way of railroad construction. The application of thermite welding is widespread. In railroad construction, it is used to weld railroad track

  HPMC Cellulose  is a non-ionic hydroxypropyl methyl cellulose. It is commonly used as a water retaining agent in cement/mortar applications and is the most commonly used water retaining material. The production process of  HPMC  cellulose is the alkalization and etherification of cotton fibers to form a polysaccharide ether product. It is not charged by itself and the gel-like material in the charged ions does not participate in any reaction and has stable properties. hpmc cellulose is less expensive than other types of cellulose ethers and is widely used in dry mortar. The role of hydroxypropyl methyl cellulose 1. Thickening effect: HPMC cellulose can make the fresh mortar thicken and have a certain wet viscosity to prevent segregation. 2. Water retention effect: Water retention is also one of the most important properties, which helps to keep the free water in the mortar. It gives more time for the cementing material to hydrate after mortar construction. 3.Outgassing effect: HPMC c

What is nanofiltration? The burst of filtration and filtration-related activity that followed the development of the phase-inversion process for the manufacture of polymeric membranes, in the early 1960s, led to the establishment of three membrane separation processes: reverse osmosis, ultrafiltration and, more recently, microfiltration. These processes took the separation spectrum from the traditional cut point limit of standard filtration of around 0.01 mm (10 μm) to the very finest distinct solids, a few nanometres in size, and enabled the separation of large molecules from solution. The actual size ranges vary somewhat from source to source, but there is general agreement that microfiltration covers the range 10 μm down to 0.1 μm, while ultrafiltration covered 0.1 μm down to 0.005 μm (5 nm) in terms of discrete particles or Molecular Weight Cut-Off (MWCO) figures of 300,000 down to around 300 Daltons for dissolved materials. Reverse osmosis, of course, was designed to retain the ve

  There are many times when Chengdu waterstop is used in life and construction projects. We can understand its basic function - waterstop through the name. Due to the use environment of the waterstop, the substances are different. There may be water leakage during use. What is the reason? We together look. The selection of the  Minka waterstop   should be determined comprehensively according to the importance level of the structure, the deformation amount of the deformation joint and the water pressure, the application (application) of the waterstop, the working environment, economic factors and other conditions. What are the reasons for the water stop leaking? 1. Improper material is easy to damage The material of the existing back-mounted waterstop is soft and hard. The "claw edge" of the back-mounted waterstop processed with the former is thin and soft, and the "claw edge" is easily overwhelmed by the coarse aggregate when the lining concrete is poured, causing i

  High-speed rotary union is a type of rotary joint. High-speed rotary joints are used for high-speed interface transmission media. High-speed rotary joints are different from ordinary rotary joints, so you must pay special attention to them during normal use. Now let's take a look at the daily maintenance of high-speed rotary joints. High Speed Rotary Union   Maintenance Methods 1. Sealing surface Check the wear condition and thickness change of the sealing surface (generally, the normal wear is 5-10mm); observe the friction track of the sealing surface to see if there are three-point discontinuity or scratches. If these problems occur, don't hesitate to replace the rotary joint immediately. 2. Clean regularly Special attention should be paid to the inside of  the rotary joint  drum and pipeline, and a filter should be added when necessary. This is because many foreign objects will cause strong wear on the rotary joint, and frequent cleaning can effectively extend the service