1).风管加工：放样、下料、卷圆、折方、咬口、制作直管、管件、法兰、吊托支架、钻孔、铆焊、上法兰、组对。

1) wind pipe processing: lofting, blanking, winding, folding, biting, making straight pipes, fittings, flanges, hanger brackets, drilling, riveting, upper flanges and group pairs.

2).通风管道安装：找标高、打支架墙洞、配合预留孔洞、埋设吊托支架，组装、风管就位、找平、找正，制垫、垫垫、上螺栓、紧固。

2). Ventilation pipe installation: looking for elevation, supporting wall holes, cooperating with retaining holes, laying hoist support, assembly, wind pipe position, leveling, looking for positive, cushion, cushion, bolt, fastening.

2、整个通风系统设计采用渐缩管均匀送风者，圆形风管按平均直径，矩形风管按平均周长执行相应规格项目其人工乘以系数2.5。

2. The design of the whole ventilation system adopts the uniform air supply of gradually shrinking tube, the circular wind pipe is according to the average diameter, and the rectangular wind pipe carries out the corresponding specifications according to the average circumference, and its artificial multiplying coefficient is 2.5.

3、镀锌薄钢板风管项目中的板材是按镀锌薄钢板编制的，如设计要求不用镀锌薄钢板者，板材可以换算，其他不变。

3. The plate in the galvanized steel sheet wind pipe is made by galvanized sheet. If the design requires no galvanized steel sheet, the plate can be converted, and the other is unchanged.

4、风管导流叶片不分单叶片和香蕉形双叶片均执行同一项目。

4. The blades of the vane pipe are all executed in the same project without single blade and banana shaped double leaf.

5、如制作空气幕送风管时，按矩形风管平均周长执行相应风管规格项目，其人工乘以系数3，其余不变。

5. When making air curtain air supply pipe, according to the average circumference of the rectangular duct, the corresponding wind pipe specification items will be multiplied by the coefficient of 3, and the rest will remain unchanged.

6、薄钢板通风管道制作安装项目中，包括弯头、三通、变径管、天圆地方等管件及法兰、加固框和吊托支架的制作用工、但不包括过跨风管落地支架，落地支架执行设备支架项目。

6. In the production and installation of thin steel plate ventilation pipeline, including elbow, three pass, variable diameter pipe, circle area and other fittings, flange, reinforcement frame and bracket support, but not across the wind pipe landing support, landing support to implement the equipment support project.

7、薄钢板风管项目中的板材，如设计要求厚度不同者可以换算，但人工、机械不变。

7. The sheet material in the thin steel sheet wind pipe project can be converted if the thickness of the design is different.

8、软管接头使用人造革而不使用帆布者可以换算。

8. Hose connectors can be converted by using artificial leather instead of canvas.

9、项目中的法兰垫料如设计要求使用材料品种不同者可以换算，但人工不变。使用泡沫塑料者每千克橡胶板换算为泡沫塑料0.125kg，使用闭孔乳胶海绵者每千克橡胶板换算为闭孔乳胶海绵0.5kg。

9. Flanged padding in the project can be converted if the design requirements are different, but manual work remains unchanged. Using foam plastics, each kilogram rubber sheet is converted into foam plastic 0.125kg, and closed cell latex sponge is converted into closed cell latex sponge 0.5kg per kilogram rubber sheet.

10、柔性软风管加工适用于由金属、涂塑化纤织物、聚酯、聚乙烯、聚氯乙烯薄膜、铝箔等材料制成的软风管(消防排烟风机)。

10. The flexible soft air duct is suitable for the soft air duct (fire and smoke exhausting fan) made from metal, plastic fabric, polyester, polyethylene, PVC film, aluminum foil and other materials.