[Tianjin Jinzhong Ji HVAC purification equipment to recommend the star product - galvanized duct] forming thin steel rectangular duct flanges regulations are there? 1. The thin steel flanged duct connecting end should be smooth interface, the interface should be fixed at the four corners corner pieces pipeline picture, which is made of galvanized steel pipe price, thickness not less than 1.0mm. Fixed corner fittings and flanges Department sealant should be used to seal; 2. thin steel duct flange end face form and apply duct size should be consistent with the provisions of the long side of the table 4.2.11; 3. thin steel flange can be riveted or crimped to fix the body. Medium pressure duct system should be riveted or crimped spacing is 120mm ~ 150mm; high pressure duct system should be riveted or crimped spacing of 80mm ~ 100mm long side of the low pressure system duct size larger than 150mm, medium pressure system is larger than the size of the long side of the duct. When 1350mm. Can be used to connect the top Szymborska. Top Szymborska width appropriate for the 25mm ~ 30mm, thickness of not less than 3mm, the top wire suitable for M8 galvanized screws. [Tianjin Jinzhong Ji HVAC purification equipment to recommend the star product - use complex ventilation ductwork] board machine production of magnesium inorganic composite duct sheet is magnesium oxide, magnesium chloride cementitious material to neutralize the alkaline glass webs of reinforcing material, sawdust, straw for filler composite made of new non-combustible decorative materials made of a special processing. Composite duct board with mechanized production, smooth surface angle iron flange pipe friction coefficient, low drag and fireproof, waterproof, dustproof, environmental protection, non-toxic, anti-aging, corrosion resistance, smokeless, odorless, minus shock silencers, insulation, no distortion, no crack pipes, does not absorb moisture, good volume stability, simple construction operation and long service life advantages. Plant ventilation ducts, pipes, Tianjin, Tianjin Jinzhong Ji ventilation pipes from Tianjin Jinzhong Ji HVAC manufacturers to provide purification equipment. Tianjin Jinzhong Ji HVAC purification equipment Limited (www.Jzjnt.com) strong, credible, in Tianjin fans, ventilation equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the group into the brilliant and you work for a better future!