The development trend of HVAC duct is high quality Air compression hose Now more and more companies choose advanced spiral duct technology. The advantages of spiral air duct are as follows: 1. Good air tightness. Spiral air duct greatly reduces the connection of air duct and minimizes the leakage between connectors. The typical spiral air duct is 3-6m, but the typical rectangular air duct is only 1-1.5m; At the same time, only one connector is required to connect two spiral air ducts, while a typical rectangular air duct connector requires separate double flanges. 2. Standardized products. The production of spare parts (pipes and connectors) is highly automated and systematic, and has industrialized quality control. 3. Low installation cost. The installation of round duct only needs one third of that of rectangular duct. 4. Save space. Under the same pressure and the same installation space, the spiral air duct with a diameter of 200mm can replace the rectangular air duct with a diameter of 250x150mm. Without increasing the installation space, multiple spiral pipes can be used instead of wider rectangular pipes. Considering various factors, in most cases, spiral pipes require less space than rectangular pipes. Under the same pressure, the installation space of several spiral pipes is equal to or less than that of rectangular pipes. Most rectangular pipe systems require 4 bolts to fix, which will increase 40~80mm in each direction. 5. The pressure drop is low. As we know, spiral duct has lower ventilation resistance than rectangular duct. 6. Precision locking technology. Wuhan Air compression hose The mold on the is made of special steel. After years of use, the surface remains unchanged, making the surface of the spiral air duct free of scratches and extending the service life. 7. The perimeter of rectangular air duct with length width ratio of 1:3 at the same section is 40% larger than that of spiral air duct, which means that spiral air duct saves more materials and reduces thermal insulation.

For the woodworking industry, many users high quality Air compression hose Not unfamiliar, this is an industrial dust collector used on woodworking carving machines, mainly used to absorb wood chips, wood ash, etc. At present, there are many kinds of woodworking vacuum tubes on the market. In the past few years, major furniture factories used PVC steel wire hoses with flat ends. In recent years, more and more enterprises have replaced cheap PVC steel wire hoses with more wear-resistant and durable pu steel wire expansion tubes. Some of the former take a few days or a month, while some of the latter take a few months or a year, They are also steel wire hoses. Why is the service life gap so far? First of all, you may have the impression that many PVC hoses have a very bad smell. This kind of hose is often used in daily life. Because the raw material itself is very cheap, the price of the finished product is also very low. For example, only a dozen yuan a piece. Think about the price of PVC raw materials, which is generally 8-15 yuan a kilogram, And most businesses will not use expensive PVC raw materials, Air compression hose Where can I find it? The woodworking vacuum tube produced in this way has a very strong smell, not only unpleasant, but also many times the product can not even achieve environmental protection. However, the current updated product, pu steel wire telescopic tube, is a large woodworking furniture factory. An expensive woodworking carving machine uses a cheap vacuum tube with a very smelly smell, which has much to do with the overall style.

Common for ventilation duct high quality Air compression hose What should be paid attention to during processing: the galvanized air duct shall not be connected with s-shaped, c-shaped right angle and vertical angle plugs. Clasp type air duct shall not be used for Grade 1 to 5 clean air. The rivet spacing of air duct shall be less than 100 mm. When the air purification level is 1-5, the rivet spacing of air duct shall be less than 65 mm. Before processing the galvanized air duct, use cleaning solution to remove the oil stain and dust on the surface of the plate. The cleaning solution shall be a neutral detergent, which will not damage the board surface, and will not produce dust after drying, so it will not be harmful to human health. Clean the vent pipe with cleaning solution after fabrication. After cleaning, the electric board shall be sealed in time after the white silk cloth cleaning inspection meets the requirements. The inner wall of color coated steel pipe shall be smooth, and the coating shall not be damaged during steel plate processing. The damaged parts shall be coated with epoxy resin. The galvanized air duct seamed joints, riveted joints and flange flanged corner joints shall be sealed with sealant or other sealing measures according to the design and cleaning level requirements. The sealing materials shall be isobutyl rubber, chloroprene rubber, modified silica gel, etc. The sealing surface of the air duct plate joint shall be located at the positive pressure side of the air duct wall. The production site of galvanized air duct shall be relatively closed, and the production site shall be paved with soft materials that are not easy to produce dust. The galvanized air duct shall have fewer longitudinal joints, glass fiber reinforced plastic ventilation pipes, and no transverse joints. Air compression hose Where can I find it? The processing of connecting bolts, nuts, washers and rivets shall be galvanized or other anti-corrosion measures, and blind rivets shall not be used.

What are the process requirements for making welded air ducts? Both ends of the expansion joint are welded to the outer wall of the air duct. high quality Air compression hose When the fan coil unit is equipped with two air outlets, the double-layer shutter with regulating valve should be selected. Usually only small installation space is required. Without increasing any pressure drop, a circular pipe with a diameter of 200mm in the same installation space can replace 250 × 150mm rectangular pipe. Features: The iron sheet is prone to chemical reaction in various environments, causing corrosion and rust. However, zinc hardly changes in dry air. The thermal insulation and fire resistance performance indicators of the welded air duct system shall meet the requirements of Code for Acceptance of Construction Quality of Ventilation and Air Conditioning Engineering (GB50243) and Technical Specification for Ventilation Ducts (JGJ141) respectively. In the ventilation system: supply fresh air and exhaust gas, exhaust harmful gas outdoors, and send outdoor fresh air indoors. This technology is widely used in various process pipelines, oil and gas pipelines in oil fields and other cleaning projects. Especially for pipeline cleaning of long-distance fluid transportation, it has advantages that cannot be replaced by other technologies. When the air leakage rate exceeds the requirements of the design and acceptance specifications, the leakage can be detected by listening, touching, observing, water or smoke, and the air leakage position can be found and marked; After repair, retest until qualified. Safety seal ring leak proof system. The exquisite spiral pressing rib technology enables the spiral air duct to have good strength under pressure, Air compression hose Where can I find it? With the addition of spiral ribs, the thickness of the seam is four times that of the pipe body. The rigidity of the pipe is very large, which shows the advantages of firmness. It can withstand large pressure loads without damaging deformation. The thickness of materials can be reduced by 15%, reducing costs.

Before construction, the technicians must be familiar with the drawings and relevant data carefully, and understand the technological process, working medium, pressure, temperature and other technical parameters as well as the materials, models and specifications of the materials and accessories used. The construction personnel must be fully familiar with the construction procedures, construction methods, quality standards, operating procedures and safety technical requirements, and strictly implement them during construction. Main materials used for making galvanized air duct, Wuhan Air compression hose It shall comply with the current national product standards and the enterprise standards of the manufacturer, and shall have the factory certificate and other relevant material certificates. All material accessories must be rechecked with the design and current national product standards, and shall have the factory certificate, material quality assurance and other relevant material certificates. Combined flange air duct is also called thin-walled steel plate flange air duct. It is an air duct connected by non profile steel and made of galvanized steel plate. Its connection form can be directly pressed by strips or steel plates or the air duct and flange can be integrally formed. This kind of air duct has advanced manufacturing technology, accurate blanking, low material consumption, stable product quality, many varieties, smooth contour lines, and air leakage rate far lower than the national standard, which is conducive to the production of ventilation ducts to be industrialized, large-scale, standardized and automated. It is a scientific and technological achievement project that has been vigorously promoted in China in recent years as one of the non blue air duct processes. The National Grand Theater project is to use this new process air duct. Common plate flange air duct 1 Fabrication of composite flange air duct Common mechanical equipment for fabrication of composite flange air duct include: rectangular air duct full-automatic production line, plasma automatic cutting machine, flange strip forming machine, hook code forming machine, conjoined flange forming machine, etc. The combined flange air duct is based on the air duct size given in the drawing, Air compression hose Where can I find it? Fully automatic production line is used to produce coiled material with a common width of 1250mm, and the plate thickness is 0.5~1.2mm. When the large side of the air duct is less than or equal to 2m, the air duct is formed into TDC1 flange, and the standard pipe length is 1170mm; When the large side of the fabricated air duct is less than or equal to 2.5m, the air duct is formed into TDC2 flange, and the standard pipe length is 1250mm; When the large side of the fabricated air duct is more than 2.5m, the air duct is formed into an angle steel flange, and the standard pipe length is 1230mm