What is stainless steel spiral duct? Sanding pipe company The products are mainly used to connect the air flow between two places and play the role of ventilation. There are three types of galvanized spiral air ducts, stainless steel spiral air ducts and composite spiral air ducts. Here we mainly talk about the stainless steel spiral air duct, and briefly analyze the reason why it is widely used in villas. The so-called stainless steel air duct is strictly a kind of air duct processing technology, also known as spiral seamed thin-walled tube. The best quality is the thin-walled tube with spiral seamed made of metal strips. Because the applied material is metal, it is also called spiral seamed metal tube. It was first used in the military industry of western countries, such as ships, ship ventilation, air conditioning systems, and later used in trains Subway, mine and other civil facilities. By 2000, according to statistics, 95.6% of office buildings, shopping malls and subways in the United States had applied spiral air ducts. In civil residential buildings, 72.5% of central air conditioners use spiral air ducts. Since the mid-1990s, China has introduced this technology into the shipbuilding industry. With the rapid development of China's economy, the use of central air conditioners has increased year by year, and the quality of auxiliary products for exhaust and air supply has been continuously improved. Spiral air ducts have been widely used in some villas. (1) Product standardization: The production of spiral round air duct fittings (pipe fittings and joints) has been highly automated, systematic, and has industrialized quality control. It is well known that the wind resistance of circular duct is much smaller than that of rectangular duct. (2) Easy to install. The installation of spiral air duct significantly reduces the connection points between pipes and minimizes the leakage at the joint of pipe fittings. The typical spiral air duct is 3~6m long, while the typical rectangular air duct is only 1~1.5m long; The connection of two spiral air ducts requires only one pipe connector, while the connection of traditional rectangular air ducts often requires a completely independent double flange system. (3) Usually only small installation space is required: the same wear-resisting Sanding pipe The circular pipe with a diameter of 200mm in the installation space can replace 250 × 150mm rectangular pipe. On the premise of not increasing additional installation space, several parallel circular pipes can replace flat rectangular pipes.

Changsha Sanding pipe It is a kind of hose that can be used for sand pumping and sand suction produced with high abrasion resistant rubber. It is often used in sand blasting industry, cement, steel, minerals and other industries, but it is mainly used in river dredging, slurry transportation in mines, sand digging and sand taking and other industries to transport sharp granular solids or solid-liquid mixtures. Its product structure is composed of high wear-resistant layer, reinforced water pipe layer, skeleton steel wire and outer rubber. Today, Myers will introduce the application field of wear-resistant sand absorption rubber pipe. When the wear-resistant sand suction rubber pipe is applied in the mine pit, it is necessary to set a floating boat equipped with a sand pump in the mine pit, and use the floating sand suction rubber pipe to connect with the sand pump. The floating boat will float up and down with the rise and fall of the water level. It is required that the pipe body has good flexibility and good tear resistance and bending resistance. The offshore pipeline is connected by non floating sand suction hose until the pulp transportation destination. The overall pipeline is divided into two parts, one for surface use and the other for onshore use. The main raw material of these two kinds of hoses is high abrasion and corrosion resistant rubber, and cord reinforcement layer and steel wire skeleton layer are added in the pipe wall to ensure the pressure resistance and tear resistance of the hose. The connection mode is vulcanized flange connection, that is, the flange and the hose are a whole, so there is no need to worry about the flange falling off. Floating sand suction hose used on the water surface. This kind of hose is required to float on the water surface. Due to the large drop of the mine (100 meters) and the long conveying distance Sanding pipe company The hose shall have high pressure resistance, and the design pressure is 25 kg/cm2 according to the calculation. It should be considered that the floating ship will move up and down with the rise and fall of the water level and the wave will cause lateral displacement. Its internal structure is the same as the sand suction hose used offshore, except that a floating body is installed outside the hose.

People buy in daily life wear-resisting Sanding pipe Take it home for installation. It is obviously installed very well, but the spiral air duct will become loose for a long time, which gives most users a headache. So what is the problem with spiral air duct reinforcement? This is of course necessary. The following manufacturer of galvanized spiral air duct will give you a detailed introduction. 1. Reinforcement measures shall be taken for circular pipes (excluding spiral pipes) with a diameter greater than or equal to 80 mm, a section length greater than 1250 mm or a total area greater than 4 ㎡; 2. The side length of rectangular air duct is more than 630 mm, the length of pipeline insulation side is more than 800 mm, the section length is more than 1250 mm, or the plane area of one side of low pressure pipeline is more than 1.2 m2, and that of medium and high pressure pipeline is more than 1.0 m2, so reinforcement measures should be taken; 3. For reinforcement of irregular oval pipes, the reinforcement method of rectangular pipes shall be referred to. The spiral air duct manufacturer Hongyuansheng Electromechanical also has something to say: the reinforcement of galvanized air duct non-metallic air duct should also meet the following requirements: when the diameter or side length of the rigid PVC pipe is greater than 500 mm, the connection between the pipe and the flange should be equipped with stiffening plates, and the spacing should not be greater than 450 mm. The reinforcement of organic and inorganic FRP pipes shall be made of the same materials with the same anti-corrosion performance as the pipes themselves. Sanding pipe company The manufacture of rectangular pipe elbows shall generally adopt concentric arc elbows with the curvature radius of the length inside and outside the plane. When other forms of elbow are used, and the plane length is more than 500 mm, the elbow deflector shall be set.

In the shipbuilding industry, radio industry, electrical industry, telecommunications industry, instrument industry, aviation industry, medical industry, etc., we often see acid and alkali resistant hose, then what is Changsha Sanding pipe What about? If you want to know more, please read down! Acid and alkali resistant silicone hose is a kind of pipe specially used for power equipment, which uses acid and alkali resistant silica gel as the main raw material and tightly wraps the pipe wall with electrical grade polyethylene spiral wire. Due to the chemical inertia of acid and alkali resistant silica gel, this kind of pipe has good acid and alkali resistance performance and electrical performance, and is commonly used in the production of wires, cables and lead wires in extreme acid and alkali environments. Also called: acid and alkali resistant silicone rubber hose, acid and alkali resistant silicone rubber hose, acid and alkali resistant silicone rubber hose, acid and alkali resistant silicone rubber hose, acid and alkali resistant silicone rubber hose. Features: 1. High temperature resistance (250-300 ℃) and low temperature resistance (- 40-60 ℃); 2. Good acid and alkali resistance. Physiologically stable, able to withstand repeated harsh and disinfection conditions, resistant to ozone aging, light aging, weather aging and ultraviolet radiation. 3. Small resilience and permanent deformation (no more than 50% at 200 ℃ for 48 hours), breakdown voltage (20-25KV/mm), ozone resistance and UV resistance. Sanding pipe company Radiation resistance and other characteristics, 4. Good electrical performance, small change when exposed to moisture, water or temperature rise, even if the silica generated by short circuit combustion is still an insulator, which ensures that electrical equipment continues to work, so it is most suitable for making wires, cables and lead wires.

Let's take a look today Changsha Sanding pipe How should the maintenance work be done? Firstly, the thickness of galvanized air duct splice plate shall be within the range specified in various specifications. If it is less than the thickness, it is easy to have defects such as cracking and wrinkling due to significant increase of bending force, abnormal damage of forming roll, overload of transmission system, boring, etc. Secondly, in the dedusting system: galvanized air ducts can be used for the collection and transportation of dedusting devices. In terms of air exhaust system: there is a large amount of smoke in the dining room, dining room and hotel kitchen, which needs air exhaust. The galvanized pipe is more appropriate, with good strength, economy and practicality. In air conditioning system: galvanized air duct can be pasted with thermal insulation materials, and the surface is beautiful. In bulk material transportation: in the pneumatic conveying system, some materials with fine loose particles can be transported by galvanized pipes, which has low cost and good effect. In the ventilation system: fresh air is supplied and discharged, harmful gases are discharged outdoors, and outdoor fresh air is sent indoors. The strength of stainless steel plate is greater than that of ordinary steel plate. When stainless steel plate is used for seaming, first of all, a forming test should be carried out to avoid overloading of equipment and excessive wear or mechanical problems. Due to the poor plasticity of aluminum plate, it is easy to crack when biting into forming. Forming test shall be conducted before construction. The last point is that the protection and decoration of the galvanized layer of the galvanized air duct can be significantly improved after passivation treatment, dyeing or brushing light protective agent. and Changsha Sanding pipe The fire prevention function of is mainly reflected in that it is nonflammable, but it should be noted that whether the insulation layer is burned depends on the material. We recommend that galvanized air duct materials use nonflammable insulation materials such as centrifugal glass wool.

Ventilation pipes on ships are generally made of galvanized iron sheet wear-resisting Sanding pipe This kind of air duct is generally made by hand, and the production efficiency is low. Later, circular spiral air ducts made by machines greatly improved the production efficiency of air ducts and the quality of air ducts, which were widely used on civilian ships. However, for military ships with very strict height restrictions, circular air ducts obviously occupied more height than rectangular air ducts, which limited the promotion and use of circular spiral air ducts on ships. In the 1980s, 708 Research Institute, the Military Representative Office of Navy Garrison 426 Factory and Dalian Bohai Air Conditioning Auxiliary Factory jointly successfully trial produced the flat spiral air duct. It combines the advantages of the circular spiral air duct and the rectangular air duct. It is the third generation of air duct for ships, which is welcomed by the ship design department and has achieved good results after many ship use. The structure of the spiral air duct is the same as the round spiral air duct. It is also formed by rolling galvanized iron sheet on a special pipe coiler. Therefore, it can be produced mechanically, and the inner surface of the air duct is flat and smooth. The utilization rate of materials is also high. The thickness of galvanized iron sheet is generally 0.6mm. Although it is 0.75~slightly thinner than the commonly used rectangular air duct iron sheet, its rigidity is higher than that of rectangular air duct due to the reinforcement effect of spiral undercut. There are two types of flat spiral air duct: non adiabatic and pre adiabatic. Non adiabatic type is applicable to air conditioning ducts with simple mechanical ventilation, natural ventilation and external insulation. Changsha Sanding pipe There are two types, one is air layer insulation, that is, there is 12.5~thick air layer between the inner pipe and the outer pipe. The other is that the inner and outer pipes are filled with thermal insulation materials rock wool or ultra-fine glass wool to become good thermal insulation air conditioning ducts.