1, all kinds of plates, pipes and other quality documents should be included (including factory qualification certificate, quality certificate and test report) and product list.

2、 风管成品不允许有变形、扭曲、开裂、孔洞、法兰脱落、开焊、漏铆、漏打螺栓孔等缺陷。

2, the wind pipe products are not allowed to have deformation, distortion, cracking, holes, flange shedding, welding, leakage riveting, missing bolts holes and other defects.

3、 安装的阀体消声器、罩体、风口等部件应检查调节装置是否灵活，消声片、油漆层有无损伤。

3, installation of valve muffler, hood, tuyere and other components should check whether the adjustment device is flexible, whether the silencer and paint layer are damaged.

4、 安装使用的材料：螺栓、螺母、垫圈、垫料、密封条、自攻螺钉、拉铆钉、电焊条、各种帆布、无纺布、射钉、膨胀螺栓等应符合产品质量要求。

4, installation and use of materials: bolts, nuts, gaskets, cushion materials, sealing strips, self tapping screws, pull rivets, electric welding strips, all kinds of canvas, non-woven fabric, nail, expansion bolt, etc. should meet the quality requirements of the product.

其次，不同用途的通风管道也要选择不同的材质：

Secondly, different ventilation ducts should be made of different materials.

最后，几种常见材质的对比：

Finally, the comparison of several common materials:

(1)薄钢板风管。可分为镀锌钢板和普通薄钢板风管，它是最常用的材料，风管间的连接一般采用角钢或扁钢法兰。

(1) thin steel plate wind pipe. It can be divided into galvanized steel sheet and plain steel sheet air duct. It is the most commonly used material. The connection between air pipes usually adopts angle steel or flat steel flange.

(2)不锈钢板风管。用于输送腐蚀性气体，其管道、部件均需采用不锈钢板制作，此风管阀的连接采用法兰连接，其连接也可用不锈钢制作，矩形法兰可直接焊接而成；圆形法兰宜采用冷弯加工而成。

(2) stainless steel plate wind pipe. Used for transporting corrosive gas, its pipes and parts are made of stainless steel plate. The connection of the wind pipe valve is connected with flange, and the connection can be made of stainless steel. The rectangular flange can be welded directly. The circular flange should be made by cold bending.

(3)铝板风管。由铝及铝合金板制作而成。由于铝具有较好的抗化学腐蚀性能，因而常用于输送有腐蚀性的气体。

(3) aluminum plate wind pipe. It is made from aluminum and aluminum alloy plates. Because aluminum has good chemical corrosion resistance, it is often used to transport corrosive gases.