Shandong galvanized sheet duct / Hebei galvanized sheet duct / Henan galvanized sheet duct

Installation duct and duct components: 1, the general sent to install ventilation systems and air conditioning systems, to complete the construction in the structure of the building envelope, the installation position of the obstacle has been cleared of debris under the ground without conditions. 2, to determine elevation, install duct hangers, after an anti-rust paint brush rust. Duct support and hanger hanging point, usually embedded iron, sticks, secondary grouting hanger, expansion bolt method. 3, according to the center line of duct laying position to find the boom, boom on the center line of single duct and double boom can pitch or centerline symmetry duct installation by bolt holes of the tray. Boom according to the form of hanging pieces hanging pieces can be welded on, can also be hung on the hanging pieces, painted rust after soldering should be. 4, the riser card is installed, it should first a tube top fixed, then hanging wire hammer hanging at the center line, the following line pipe card can be fixed. When the duct is longer, you need to install a row of brackets can be installed at both ends of first, and then the two ends of the bracket as a reference to find the elevation of the middle bracket with cable installation method. 5, in order to ensure the rigor flange interface, there should be between the flange gasket, general air conditioning systems and delivery, exhaust system uses a flange gasket sealing tape 8501, soft closed-cell sponge rubber sheet rubber sheet. Flange gasket must not intrude or projecting into the tube. Flange gasket should minimize joints, trapezoidal or tenon joints should form connections, and adhesive cement, after the flange to flange non-plug gaps town litter. 6, flange connection, the first of the two flanges being put on a few bolts and nuts contained and not to tighten, then do not wear sharp punch into the bolt holes in the two screws Hole ski positive until after all the bolts are put on, and then tighten the bolts. To avoid bolt slider, when the bolts should be evenly crosswise and gradually tighten the connection flange nuts should be on the same side, the connected duct, should be subject to both ends of the flange, connecting wiring test wind should level off straight.