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1. Find out the suspender laying position according to the center line of Chongqing common plate flange air duct. The single suspender is on the center line of the air duct, and the double suspenders can be installed symmetrically according to the screw hole spacing of the tray or the center line of the air duct.

2、吊桿根據吊件形式，可以焊在吊件上，也可掛在吊件上，焊接后應涂防銹漆。

2. The suspender can be welded on the suspender or hung on the suspender according to the form of the suspender. After welding, it shall be coated with antirust paint.

當風管較長需要安裝一排支架時，可先把兩端安好，然后以兩端的支架為基準，用拉線法找出中間支架的標高進行安裝。

When the air duct is long and a row of supports need to be installed, the two ends can be installed first, and then the elevation of the middle support can be found out by the pull wire method based on the supports at both ends.

3、立管管卡安裝時，應先把上面的一個管件固定好，再用線錘在處吊線，下面的管卡即可按線進行固定。

3. When installing the riser pipe clamp, first fix the upper pipe fitting, then hang the line at the center with a wire hammer, and the lower pipe clamp can be fixed according to the line.

4、風管支吊架間距如無設計要求時，對不保溫風管應符合下表的要求。對于保溫風管的支、吊架間距無設計要求時，按下表間距要求值乘以0.85。重慶螺旋風管加工的成品的支、吊架間距可以適當增加。

4. If there are no design requirements for the spacing of air duct supports and hangers, the uninsulated air duct shall meet the requirements in the following table. If there are no design requirements for the spacing between supports and hangers of insulated air duct, multiply the spacing requirements in the following table by 0.85. The spacing between supports and hangers of finished products processed by Chongqing spiral air duct can be appropriately increased.

、支吊架不得安裝在風口、閥門檢查孔處，以免妨礙操作。吊架不得直接吊在法蘭上。

Supports and hangers shall not be installed at the air outlet and valve inspection hole to avoid hindering the operation. The hanger shall not be directly hung on the flange.

2、保溫風管不能直接與支吊架接觸，應墊上堅固的隔熱材料，其厚度與保溫風管厚度相同，防止產生“冷橋”。

2. The thermal insulation air duct shall not be in direct contact with the supports and hangers, and shall be padded with solid thermal insulation materials with the same thickness as the thermal insulation air duct to prevent "cold bridge".

3、聚氯吞烯風管也與鋼板風管一樣采用支、吊托架，但一般以吊架為主，支架間距按下表的要求制作安裝，

3. Like steel plate air duct, polychlorotiene air duct also adopts support and hanging bracket, but generally it is mainly hanger, and the spacing of support is manufactured and installed according to the requirements in the table below,

法蘭連接：

Flange connection:

為保證法蘭接口嚴密性，法蘭之間應有墊料。在無特殊要求的情況下，法蘭墊料按下表選用。

In order to ensure the tightness of flange interface, there shall be padding between flanges. In case of no special requirements, flange gasket shall be selected according to the following table.

風管排列無法蘭連接

Air duct arrangement without flange connection

抱箍式連接：主要用于鋼板圓風管和螺旋風管連接，先把每一管段的兩端軋出鼓筋，并使其一端縮為小口。安裝時按氣流方向把小口插入大口，外面用鋼制抱箍將兩端的鼓箍抱緊連接，后用螺栓穿在耳環中間固定擰緊。

Hoop type connection: it is mainly used for the connection of steel plate round air duct and spiral air duct. Firstly, roll out the bulge reinforcement at both ends of each pipe section and shrink one end into a small mouth. During installation, insert the small opening into the large opening according to the air flow direction, tightly connect the drum hoops at both ends with steel hoops, and then screw them through the middle of the earrings with bolts.

插接式連接：主要用于矩形或圓形風管連接。先制作連接管，然后插入兩側風管，再用拉鉚釘將其緊密固定。

Plug in connection: mainly used for rectangular or circular air duct connection. First make the connecting pipe, then insert the air ducts on both sides, and then fix it tightly with pull rivets.

插條式連接：主要用于重慶矩形風管加工成品的連接。將不同形式的插條插入風管兩端，然后壓實。

Plug in connection: it is mainly used for the connection of finished rectangular air duct in Chongqing. Insert different forms of inserts into both ends of the duct and compact.

軟管式連接：主要用于風管與部件(如散熱器、靜壓箱側送風口等)的相連。安裝時軟管兩端套在連接的管外，然后用非常軟的卡箍把軟管箍緊。

Hose connection: it is mainly used for the connection between air duct and components (such as radiator, plenum side air supply outlet, etc.). During installation, both ends of the hose shall be sleeved outside the connected pipe, and then the hose shall be clamped tightly with a particularly soft clamp.