[Tianjin Jinzhong Ji HVAC purification equipment to recommend the star product - Ventilation pipeline project] industry conditions 1, the general exhaust system and install air conditioning systems should finish construction in the building envelope, obstacles have been cleared, no debris under the ground conditions. 2, the installation of the air cleaning system should be installed inside the building on the ground of good parts, plaster walls have been completed, the room is not dusty or dust control measures under the conditions. 3, the general dust duct system should be installed in the plant process equipment or device installed base has been completed to determine the next decontamination plant, equipment connector cover position known manner. 4. Check the site reserved hole location, size should be consistent with requirements of the drawings, each side bigger than the actual section 100mm. 5, the job site have the appropriate facilities, such as ladders, shelves, security, fire-fighting equipment, and technical construction workers, quality and safety disclosure. [Tianjin Jinzhong Ji HVAC purification equipment to recommend the star product - galvanized duct] a fire duct body, frame and fixed material, packing material must be non-combustible material, its fire resistance rating shall meet the design provisions. Second, the duct must be the process of testing or verification of decontamination, its strength and tightness requirements should be consistent with the design or the following requirements: 1. Strength duct should be able to meet without cracking at the seams at 1.5 times the working pressure; 2 rectangular duct allows air leakage should meet the following requirements: low pressure system duct QL≤0.1056P0.65 medium pressure systems Duct Duct QH≤0.0117P0.65 QM≤0.0352P0.65 high pressure system where QL, QM, QH-- system duct work under pressure corresponding pharmaceutical decontamination, allow duct leakage per unit area per unit time [m3 / (h · m2)]; P-- refers duct system operating pressure (Pa). 3. Low, Medium round metal duct, air duct and the use of composite materials in the form of non-metallic illegal orchid allowable air leakage duct, rectangular duct should be 50% of the specified value; 4. brick, concrete duct allow air leakage should not exceed the low pressure system rectangular duct 1.5 times the value specified; 5. The provisions of smoke, dust, cold air system pressure by the duct system, grade 1 to 5 air conditioning system by high-pressure air duct system regulations. _ Tianjin Jinzhong Ji plant decontamination decontamination company (certified) _ Tianjin project provided by the Tianjin Jinzhong Ji HVAC purification equipment. Tianjin Jinzhong Ji HVAC purification equipment Limited (www.Jzjnt.com) is a leader in Tianjin, fans, ventilation equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In the group leadership with the staff warmly welcome all inquiries negotiations to create a better future for the base.