Production of inorganic fiberglass duct | noncombustible inorganic fiberglass duct | MPP | Table of Contents 1 Introduction 2MPP noncombustible inorganic fiberglass duct an introduction inorganic fiberglass duct divided according to their performance cementitious materials: * salt for cementitious materials in the glass hydraulic inorganic glass fiber mesh cloth made of steel air tubes and the modified magnesium oxychloride cement and cementitious materials for fiberglass mesh modified magnesium oxychloride rigid gas pipe made of two types of cement wind. BINDER body PH value should be less than 8.8, does not deal with fiberglass alkaline corrosion. Inorganic fiberglass duct inorganic fiberglass duct should be used alkali, alkali or alkali-resistant fiberglass mesh, and were in line with current national standard "fiberglass mesh" JC561, "E-glass fiber roving" JC / T281, "alkali fiberglass roving" provides JC / T576's. Quality oxychloride cement duct magnesia should comply with national standards, "with a light burned magnesia magnesite products" provisions of WB / T1019-2002 of. Inorganic fiberglass duct into the overall general (non-thermal), the overall insulation type (inner and outer surfaces of the inorganic glass, steel, in the middle of a heat insulating material), the combination (by composite panels, special glue, flanges, reinforcing corner pieces connected rife tube) and a combination of four types of insulation type, its production parameters should be in accordance with Table 1, 2, 3. Vertical fiberglass mesh between adjacent layers, the distance should be greater than the cross lap joint 300mm, with layer lap joint distance of not less than 500mm. Lap length should be greater than 50mm. Duct to flatten the surface of the slurry thickness fiberglass mesh is appropriate (visible Gyrosigma). And the surface may not have pores and dense plasma leakage. Table 1 overall common type duct production parameters (mm) long side duct size or diameter D b Duct flange height of the wall thickness of the glass fiber layers thick glass fiber layers pitch (L) bolt size C1 C2 C1 C2 b (D) ≤300 3 4 5 27 5 7 8 low, medium and high pressure pressure L≤120 L≤100 M6 300 (D) ≤500 4 5 7 36 6 8 10 M8 500 (D) ≤1000 5 6 8 45 8 9 13 M8 1000 (D) ≤1500 6 7 9 49 10 10 14 M10 1500 (D) ≤2000 7 8 12 53 15 14 16 M10 b (D)> 2000 8 9 14 52 20 16 20 M10 Note: C1 = 0.4mm thick glass fiber layers; C2 = 0.3mm thick layers of fiberglass cloth. Table 2 overall insulation type duct production parameters (mm) long side duct size or diameter D b duct within the wall thickness of the outer flange thickness of the wall thickness of the net height pitch (L) bolt size b (D) ≤300 2 2 31 5 low, high pressure and medium pressure L≤120mm L≤100mm M6 300 (D) ≤500 2 2 31 6 M8 500 (D) ≤1000 2 3 40 8 M8 1000 (D) ≤1500 3 3 44 10 M10 1500 (D) ≤2000 3 4 48 15 M10 b (D) ≥2000 3 5 47 20 M10 Note: The insulation thickness shall meet the design requirements. Table 3 combination produced duct insulation type parameter (for pressure ≤1500Pa) (mm) Duct side length b (mm) glass fiber layers Thickness (mm) outer wall thickness (mm) of the total wind pipe thickness (mm) Connection Flange pitch (mm) inner wall of an outer wall insulation b≤1250 2 2 2 3 5+ insulation PVC or aluminum alloy C Type Cuttings - b> 1250 3 ∠36 × 4 angle flange ≤150mm ordinary b≤630 5 - 5 ∠25 × 3 angle flange ≤150mm b≤1250 ∠30 × 3 angle flange b> 1250 ∠36 × 4 angle flange Note: The minimum specification sheet flange specifications allowed. [1] 2MPP noncombustible inorganic fiberglass duct nonflammable type [2] inorganic fiberglass duct Features: MPP non-combustible inorganic fiberglass duct 1, light weight, high strength, non-flammable, anti-aging, corrosion resistance, sealing performance Well, nice appearance, easy installation, long life; 2, use of raw materials are inorganic materials, fire does not burn, superior fire performance; 3, MPP noncombustible inorganic fiberglass duct acid, alkali, salt and other corrosive, can adapt climatic conditions in different regions, especially in the salty air in coastal areas and higher chemical, pharmaceutical, tobacco, chemical and other industries, with or with volatile media, to better reflect its superior corrosion resistance; 4, the product no toxic, tasteless, non-asbestos, non-volatile media, no dust generated by the health department inspection, harmless, in line with GB / 5465-1985 "non-flammable building materials test method" standard, is an alternative to traditional products Fire materials; 5, outer wall smooth, small duct obstruction, and no secondary supply and exhaust noise, reducing energy consumption, operating cost savings; 6, the product can be on-site production, cutting, drilling, open hole, installation simple, time saving time and labor, reducing the user's investment costs, shorten the construction period; 7, high cost performance, cheaper than other materials, no maintenance after completion of the installation, reduce maintenance expenses.