Hot dip galvanized ventilation pipe occupies a key influence in urban construction.
1. Preparation before construction
As the saying goes, "the skill of sharpening a knife does not miss the skill of chopping firewood". Adequate preparation in advance is the prerequisite to ensure the installation quality of air duct. When the purification treatment air duct is prepared for production and manufacturing in advance, whether it is centralized production and manufacturing in the plant or on the spot production and manufacturing, it is necessary to ensure that the closed type is cleaned on the spot and there are standard lighting lamps and lighting lamps. In addition, the produced and processed square steel pipes should be transported carefully to minimize environmental pollution.
2. Selection of pipeline raw materials
The selection of air duct raw materials is also very harmful to the construction quality of air duct. Generally speaking, in order to better ensure the net weight of the air duct, the air duct with smaller thickness must be selected, but the specification and working pressure level of the air duct must be comprehensively considered. From the perspective of design scheme, it should be noted that a system software can match the thickness of several cylinders with different negative pressure levels.
3. Horizontal connection of air duct
風管水準聯接有一定的獨特性。這類接口方式能夠 說成增加風管長短的方式，還具備提高風管彎曲剛度、維持風管水準規格的功效。水準聯接一般 是角活套法蘭。這類聯接在于墻面的薄厚，也在于墻面的聯接和加固。
The horizontal connection of air duct has certain uniqueness. This kind of interface mode can be described as a way to increase the length of the air duct, and also has the effect of improving the bending stiffness of the air duct and maintaining the standard specification of the air duct. Horizontal connection is generally angle looper flange. This kind of connection lies not only in the thickness of the wall, but also in the connection and reinforcement of the wall.
4. Longitudinal joint of air duct
風管縱縫方式可依據具體情況挑選。中底壓管道中常會選用扣子牙齒咬合聯接。針對矩形框管道，沒有連接頭堵塞的工作壓力等級。因而，選用扣子牙齒咬合能夠 節約反邊工藝流程?，F階段，大部分軟管是豎向接縫處。按鍵用以聯接?？蛇x用螺栓、自攻螺絲、焊接、壓紋、壓印等方式 擰緊立縫和帽型立縫。
The longitudinal joint mode of air duct can be selected according to specific conditions. The middle and bottom pressure pipes are usually connected by the bite of buttons and teeth. For rectangular box pipes, there is no working pressure level with connector blockage. Therefore, the selection of button teeth can save the reverse edge process. At this stage, most hoses are at vertical joints. The key is used to connect. Bolts, self tapping screws, welding, embossing, embossing and other methods can be used to tighten the vertical seam and cap type vertical seam.
5. Air duct storage
The air duct of prefabricated components shall be properly stored to prevent secondary pollution. The branch pipe can be sealed with rubber seals such as plastic film, and then the pipe can be classified and stacked. Pay attention to cleaning the air duct before application to ensure that the surface is corrosion-resistant, and there is no vacuum pump after dryness.