[Tianjin Jinzhong Ji HVAC purification equipment to recommend the star product - Pipeline Project] can not make flanged duct shall meet the following requirements: 1) no flange connection interface and connection duct should meet the following seven provisions of Table 8 ventilation pipeline project, the circular core tube connecting duct shall comply with the requirements of Table 9; 2) sheet steel rectangular duct flange interface and accessories, and its size should be accurate, the shape should be the rule, the interface should be closely ; thin steel flange hem (or flange section) should be straight, bending should not exceed 5/1000; elastic or spring clips cuttings should match the sheet steel flange; corner pieces with thin steel pipe flanges four corners of the interface should be firmly fixed, close plant cooling engineering, end should be smooth, there should be connected at the continuous penetration of more than 2mm gap seam. 3) C, S-shaped cutting rectangular duct connecting tube side length should not exceed 630mm; cuttings and in charge of processing the socket should match the width of the room consistent refrigeration engineering, which allows deviation of 2mm; the connection should be smooth, tight, Cuttings should not be less than the length of the ends overwhelming 20mm 4) by vertical seams, vertical rectangular duct wrapping seams connecting pipe, its stud height should be greater than or equal to the angle flange width with the specifications of the duct. The same vertical seams duct specifications, consistent edging height should stand seams, knuckle should dip, straightness deviation uniform Xu 5/1000; seams connecting rivet spacing should not exceed 150mm, indirectly, should be uniform across; Li seams, corners junction riveting, should close, no holes. [Tianjin Jinzhong Ji HVAC purification equipment to recommend the star product - decontamination] to have very high demands. Here it is necessary to explain the clean room without windows lighting the way: (1) general lighting it refers not to consider the special needs of the local project, for illuminating the entire area to be illuminated and set lighting. (2) This refers to the local lighting lighting to increase a specified location (such as the operating point) illumination and settings. But not alone in indoor lighting by using local lighting in general. (3) This refers to mixed lighting illumination of the work surface by the general lighting and local lighting synthetic lighting, general illumination lighting which press the "clean plant design specifications" should be 10% -15% of the total illumination, but not low dry 150LX. Units are accepted according to the area of ??the flux that is lighting unit lux (LX). Ventilation pipeline project _ Tianjin Jinzhong Ji decontamination company (certified) _ Tianjin Tianjin Jinzhong Ji HVAC engineering provided by 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.