Ji'nan exhaust pipe closer connection is the key to success is the success of ventilation pipe system installation, ventilation pipe mouth connecting Ji'nan if not qualified, will be in the pipeline leakage phenomenon occurred in the process of using it in Ji'nan hood close connection, we should pay attention to the following matters:
1., the straight section of the rectangular pipe, whether it is the same plate connection, or a few pieces of plate combination stitching, the surface must be smooth, straight line angle. Before the combination, should remove the cutting surface, cutting powder, dust and debris;
The 2. 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 square, steel tape to check and adjust the verticality and diagonal deviation with 20mm., and meet the standard requirements;
3. 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;
4. after the connection, the pipe section shall be vertical to the shape before moving;
5. aluminum foil insulation special adhesive binder used according to the manufacturer identification plate of wind pipe, such as separately purchase brand adhesive connection must do the comparative test results, and the supervision board, taking checked and approved before use;
6., bonding should be pre assembled, check the seams all fit correctly, then besmear adhesive, bonding time control and season, temperature and adhesive properties related. Batch processing should be model test, determine the best bonding time
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