Material requirements for installation of air-conditioning ventilation ducts

Material requirements for installation of air-conditioning ventilation ducts

Ventilation duct installation

Material requirements:

1. Various installation materials should have a factory certificate or quality appraisal document and product list.

2. The finished product of the air duct is not allowed to have defects such as deformation, twisting, cracking, holes, flange falling off, missing riveting and missing bolt holes:

3. The installed valve body, tuyere and other parts should check whether the adjustment device is flexible, and whether the muffler and paint layer are damaged.

4. Materials used for installation: bolts, nuts, washers, gaskets, sealing strips, self-tapping screws, rivets, welding rods, various canvases, non-woven fabrics, nails, expansion bolts should meet product quality requirements