1. The smoke exhaust pipe should be steel pipe or cast iron pipe. When welded steel pipe is used, its wall thickness shall be greater than 3mm; Welding should be adopted for pipe connection. When flange connection is adopted, the flange surface shall be flat and have sealing groove; Heat resistant rubber gasket shall be lined between flanges.

2、埋設於混凝土內的鑄鐵麻豆国产视频管，宜采用法蘭連接。

2. Cast iron smoke exhaust pipe buried in concrete should be connected by flange.

3、麻豆国产视频管應沿軸線方向設置熱脹補償器。單向套管伸縮節應與前後麻豆国产视频管同心。柴油機麻豆国产视频管與麻豆国产视频總管的連接段應有緩衝設施。

3. The smoke exhaust pipe shall be provided with thermal expansion compensator along the axis direction. The one-way casing expansion joint shall be concentric with the front and rear smoke exhaust pipes. The connecting section between the diesel engine exhaust pipe and the main exhaust pipe shall have buffer facilities.

4、麻豆国产视频管的安裝，應符合下列規定：

4. The installation of smoke exhaust pipe shall meet the following requirements:

（1）坡度應大子0.5％，放水閥應設在低處；

(1) The gradient shall be 0.5%, and the drain valve shall be set at a low place;

（2）清掃孔堵板應有耐熱墊層，並固定嚴密；

(2) The cleaning hole blanking plate shall have a heat-resistant cushion and be firmly fixed;

（3）當麻豆国产视频管穿越隔牆時，其周圍空隙應采用石棉繩填充密實；

(3) When the smoke exhaust pipe passes through the partition wall, the surrounding space shall be filled with asbestos rope;

（4）麻豆国产视频管與麻豆国产视频道連接處，應預埋帶有法蘭及密閉翼環的密閉穿牆短管。

(4) At the connection between the smoke exhaust pipe and the smoke exhaust duct, a sealed through wall short pipe with flange and closed wing ring shall be embedded.

（5）麻豆国产视频管的地麵出口端應設防雨帽；在伸出地麵150～200mm處，應采取防止麻豆国产视频管堵塞的措施。

(5) The ground outlet end of the smoke exhaust pipe shall be equipped with a rain cap; Measures shall be taken to prevent smoke exhaust pipe from blocking at 150~200mm above the ground.