The modified non-combustible inorganic FRP ventilation duct, namely, FRP chlorine Magnesium ventilating duct, is hydrated product (hardenite) with strict manufacturing procedure, processing technology and curing procedure. It makes magnesite inorganic complex material (inorganic material, coagulation material and hydrophobic material) as cementing material, glass thread as reinforced material and is matched with elasticizer, reinforcer and water-resistant agent.
Its merits includes lightweight, higher intensity, corrosion resistance, aging resistance, innoxious, pollution-free, damp and noisedamping, tolerant to hot water, non-deformable, non-crack, non-moisture absorption, not returning the liquor, excellent volume stability, long operational life, etc. Thus, the difficult problems of combustibility of organic FRP wind pipe, the corrosion, larger noise and short operational life of iron wind pipe have been solved. In addition, as the most ideal equipment matching with centre air conditioning, the product price is lower than that of organic FRP wind pipe. Therefore, it has incomparable development potential and market competition power in various fields of national economy. Its market is gradually enlarged and it is the most ideal indoor ventilation product for large-size building at present and in future.
  Applicable scope: it is widely used in the ventilation and air conditioning in metallurgy, mineral, textile, tobacco, war industry, hotel, mall, cinema, defense engineering, underground parking lot, higher building and other building. It can also used to manufacture the smoke and toxic gas discharge funnel of chemical industry and other industries and downpipe of various oils and storage tank of chemical industrial liquid.
Prominent advantage: both the ductility and resistance to water of the product are more excellent than other similar products. At present, the outstanding disadvantage of non-combustible inorganic FRP ventilation wind is the higher brittleness. If we press the larger face of the product and we can hear some sound, which means that a lot of cracks have been generated in both the external and internal surfaces of the product. If we knock the product and hear ringing sound, it means that the product brittleness is larger. During the course of transportation and under unpredictable condition, it is unavoidable to impact and extrude such products and there will be a lot of hair cracks on the internal and external surface of the products so that water will penetrate into these cracks and the operational life of the wind pipe will be reduced. In order to solve such disadvantages, we add elasticizer and reinforcer into the products, thus the product ductility is increased obviously and the effect of large product brittleness on the operational life is solved. On the basis of many years of research and experience of producing magnesite products, we add patented product water-resist agent into the product, thus, the operational life of product is increased. The demineralization coefficient of our product is still larger than 1 after it has been immersed into the water for half year. It has better water resistance.
  Product type: magnesite inorganic complex material has larger design free degree and it can be limited by the product magnitude and shape and is convenient to mould. Therefore, there many products made of magnesite inorganic complex material, for example, various roofing plain tile in construction and decoration, drainage and sewage pipe, laminated board, ceiling tile, sanitary fixture, cleaning groove, movable house, booth, partition plate, linellae, wire, line angle, cameo, statue, dado, spherical water tank, etc. in transportation industry, vehicle and boat shell, packaging box, cover, fender-guard, air conditioning, ventilation and air discharge pipe. In petrochemical and electric industry, pipe, terrace, water tank, cable bridge, electric control box, thermal wall, lamppost, adhesive tape, waterproof cover of transport machine. Because of stable chemical performances, it is applicable for sawing, digging, drilling and stiletto of machining, facing, flame plating, flocking, and electric plating in decoration. In color processing section, pearlite, electro-optic, gleam and other colors.
Ventilation duct type: in terms of ventilation duct structure, there are three kinds of ventilation duct, integral type, combined type and fabricated type. In terms of function of ventilation duct, there are three kinds of ventilation duct, air conditioning, blow pipe, air (smoke) discharge type. In terms of thermal insulation features, there are two kinds of ventilation duct, single wall and lamination. In terms of installation requirements, there are two kinds of ventilation duct, concealed and exposed. It is convenient for transportation with lower construction expense and free of maintenance. The operational life is longer than 50 years.