A ventilation duct is a municipal infrastructure designed to circulate air and reduce the concentration of harmful gases. Ventilation pipe, air pipe fabrication and installation for plates, profiles and other major product materials, design and related products shall meet the requirements of current national standards, and the application of the factory inspection certificates, materials should be carried out according to the relevant current national standard of acceptance.
2, processing and coordination of various ventilation pipeline collision criterion, common: "let the pressure get tubular bassoon, no pressure". For example, when the water pipe is in collision with the air pipe, the water pipe should be turned. The cold and hot water pipes and water pipes should collide, change the cold and hot water pipeline.
安装完的风管要保证表面光滑洁净，室外风管应有防雨、防雪措施。 风管伸入结构风道时，其末端应安装上钢板网，防止系统运行时，杂物进入金 属风管内。
Installation of the wind pipe to ensure that the surface smooth and clean, outdoor air pipe should be rainproof, snow prevention measures. When the air duct is extended into the air duct of the structure, the steel plate net shall be installed at the end of the air duct to prevent the sundries from entering the metal air pipe when the system is running.
金属风管与结构风道缝隙应封堵严密。 风管穿越沉降缝时应按设计要求加设套管，套管与风管的间隙用填料(软质)封 堵严密，从这些特点我们应该可以很快的区分开两者的区别
The gap between the metal duct and the structural duct should be tightly sealed. When the wind pipe passes through the settlement joint, the casing shall be added according to the design requirements, and the gap between the sleeve and the air duct shall be sealed tightly with filler (soft), and from these characteristics we shall be able to distinguish the two areas very quickly
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