Galvanized duct, the United States Jie air conditioning equipment, duct galvanized sheet provided by the U.S. wholesale city Jie air-conditioning equipment. Galvanized duct air-conditioning equipment _ Jay _ America galvanized angle iron flange duct board offer is Texas-US-Air Conditioning Equipment Co., Ltd. (www.dzmjkt.com) 2014 upgrade been newly launched Texas-US-Air Conditioning Equipment Co. plated zinc plate duct production considerations:. a profile must be approved by the Employer shall have corrosion, or pitting crust. b. butt welding flange flatness wrong port is not greater than 0.5mm, the rivet holes spaced not more than 100mm, (holes spaced not more than 120 mm), pitch accuracy, should be interchangeable. c. welding slag, weld spatter, rust should be thoroughly cleaned. d. rubbed rust primer adhesion floor, holes and corners shall have poured paint drip phenomenon. Filter and piping equipment ventilation ducts if a long time without cleaning, easy to accumulate dust mites can easily breed a lot. Currently, ventilation equipment, although maturing, but it faces on the ever-changing production processes and dust, poisonous gas properties in the ventilation equipment type selection, parameter determination, various unfavorable factors (temperature, humidity, high dust concentration, fine dust, aspects of hygroscopic dust, etc.) precautions, such as the establishment of a reasonable operation and maintenance system, have yet to be explored research. Therefore galvanized duct board, the need to increase research and promote new technologies, old technology transformation efforts to make the technology more reliable ventilation equipment applications, improve galvanized duct wholesale city, and continue to expand its field of application-US-Texas air conditioning Ltd. for galvanized duct board for its production there is a certain standard rules, that we should strictly follow the rules of production in order to create the most value galvanized duct, let's take a look at the relevant rule: rule one: we need to know is in the production of galvanized steel duct is galvanized shall not destroy the protective layer. Rule two: galvanized sheet metal duct seams fight should be connected to a single duct galvanized sheet wucheng suppliers Generally speaking, for a closed circular duct seams and joints with a single, horizontal elbow joints using vertical seams, and the corner of the rectangular duct seams sewn using joint angle. Third rule: Under normal circumstances galvanized duct latest offer, making the size of the rectangular duct to the outside length prevail, the outside diameter round duct size to prevail. In addition, the production of galvanized duct using cutting shears, folding machines square off party Yaokou seams, local by hand.