Because the pipe flange plate steel fused, do not like the angle flange-like punch riveting, the pipeline connecting the two sections dedicated Falanca, bolted flange rear corners plus 90 degree angle. Simple operation, improved efficiency, the appearance of smooth, smooth, accurate size, interchangeability strong, stable quality galvanized duct board manufacturers products. Composite flange:. A folding duct itself from both ends of a flange. In the four corners of the duct mounted on the rear flange angle combination, Siping galvanized sheet duct and filled sealant evenly around the flange of the two, and then the spring clamp flange duct connecting the two. The above method is generally used for large edge length of duct between 630mm ~ 1200mm connection. b. Plug-duct flanges. According to the length of the four sides of the duct, were prepared four bars into the duct flange four sides, galvanized duct board price, after filling the sealant, adjustment flanged straight production of galvanized duct board, and then pull rivets or other means four sides of the duct and the flange riveting article. TDC1 same way as the four corners and four flange angle formulated. Then two evenly around the flange surface filled sealant. Flange spring clip connecting together two pieces of duct. The above method for duct big edge length 1200mm ~ 2000mm between connections. c. Both methods are all common flange clamps spring clip from the flange angle dimensions of about 150mm, the space between the two flanges folder within 200mm (1500mm long flange clamps itself Siping galvanized sheet duct, Yan of air-conditioning, duct galvanized sheet prices by Wu County Yanda air-conditioning plant. Siping galvanized steel duct, Yanda air conditioning, galvanized duct board price is Wu County Yanda air-conditioning plant (www.wcydkt .com) (www.wcydkt.com) this year introduced a new upgrade, the above picture is for reference only, please call the telephone or pictures on this page, for the latest information, contact: Wu Yusong.