通风管道的安装 Installation of galvanized spiral duct , ventilation duct
不绣钢螺旋风管等，但市场上面的使用镀锌螺旋风管的比较广泛,特别在一些通风程中,那么我们在安装和使用通风工程的过程中，应注意哪些，或者是必须要知道和掌握那些的.我们现在一起来了解一下. Spiral ducts are divided into galvanized spiral ducts , stainless steel spiral ducts, etc., but galvanized spiral ducts are widely used in the market , especially in some ventilation processes , then we are installing and using ventilation projects. In the process, we should pay attention to which, or we must know and master those . Let's take a look now .
。 (1) In the installation of ventilation pipes , if it is necessary to install a firewall, a protective duct should also be installed. This is better, and the thickness of the duct must not be less than 1.6mm . In addition, non-combustible thermal insulation materials should be used between the duct and the air duct, such as rock wool.
(2) For galvanized spiral air ducts, the hoop brackets and folded corners of the galvanized spiral air ducts should be straight, and the hoop should be close to and tightly clamped to the air duct so as not to become loose. If it is a circular galvanized spiral duct installed on a bracket, it should also have a bracket and a hoop, and it should have a uniform arc, which should be consistent with the outer diameter of the duct.
米。 (3) If it is a galvanized spiral duct with a thin steel plate flange, the distance between the bracket and the hanger should not be greater than 3 meters. The screw holes of the hanger should be machined. In addition, in the galvanized spiral duct, the amount of extension or compression of its hanger, Guangzhou Spiral duct believes that it should be set and adjusted according to specified requirements, and cannot exceed the range. 米。 In addition, if this type of duct is installed vertically, the spacing cannot be greater than 4 meters.