Shandong ventilation pipe processing closer cohesion if not qualified, will be in the piping system attack leakage phenomenon, in the process of applying it in close convergence, should pay attention to the following matters:
1. after the connection, the pipe section shall be vertically placed to the shape of the front, so that it can move;
2. aluminum foil insulation special adhesive binder used according to the manufacturer identification plate of wind pipe, such as separately purchase brand adhesives, must do the convergence effect contrast experiment, and the supervision and inspection, Accreditation Board business before use;
3., the straight section of the rectangular pipe, whether it is the same plate connection, or a few pieces of plate combination of stitching, the appearance of flat, straight line angle. Before the combination should clean the cutting surface of cutting panels, dust, dust and debris;
The 4. section after the combination of the 45 degree angle trimming external joint, aluminum foil sealing tape to an outer surface of each side plate, a width of not less than 20mm. square, steel tape to check and adjust the verticality and diagonal bias, and in accordance with the standard request;
5. the wind pipe of the arc surface or broken line to complete the material and fold, forming, should be combined with the flat plate, after the error in brushing adhesive, in order to ensure the geometry, size and appearance of the pipe;
6., bonding should be pre assembled, check the seams all fit correctly, then brush adhesive, bonding time control and season, temperature and adhesive properties related. Batch processing should be an example experiment, sure the best bonding time
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