[Tianjin Jinzhong Ji HVAC purification equipment to recommend the star product - Ventilation ducts] For more complex civil co-flange pipe, angle iron flange pipe at the design stage, the various types of work (HVAC, water supply and drainage, powered lighting and building professionals) should first consult a good spatial separation, set the elevation range of each pipe. Under normal circumstances not to go beyond the boundaries of their own regulations. In case of individual pipe sections to be negotiated with the ventilation ducts should be out of bounds to other projects. [Tianjin Jinzhong Ji HVAC purification equipment to recommend the star product - duct] According to the standard GB 50243-2002 "Ventilation and Air Conditioning Engineering Construction Quality Acceptance" JGJ141-2004 "ventilation ducts technical regulations" JG / T258-2009 "non-metallic and composite duct," a total of flange pipes, Tianjin Jinzhong Ji professional production pipeline for 10 years, Langfang pipeline 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.