When the fabric air duct is welded, the first thing to do is to cut the pipe. In this regard, it should be carried out in strict accordance with the drawings, and the material must be carefully cut before cutting. Check whether the size is correct; when cutting, it is necessary to avoid material waste. If the fabric air duct is welded to Wuxi ventilation duct with special material, it should be discharged as a whole first, and then unloaded to facilitate the control of the amount of the pipe. The fabric air duct is welded to the air duct. Next, the fabric air duct is welded to the Wuxi air duct. When cutting the material, if the fabric air duct is used, then when cutting, it should use mechanical or plasma cutting, and the rest is It should be noted that the flame must be used for cutting; the inclination deviation of the end face of the cut should not exceed 2 mm. The preparation of grooves in the processing of fabric air duct welding air ducts should be carried out in accordance with the requirements of the specification, and the main connection is to use welding. If it is a medium and low pressure pipeline, it is suitable to use a V-shaped groove; if it is a high-pressure pipeline, it should be noted that a YV-shaped groove must be used. The beveling should be smooth and free of any defects. When fabric duct is welded with pipe, the welding joint pairing actually refers to the pairing of the pipes. Before that, you should pay attention to cleaning the pipe joints. When the pipeline is prefabricated, it should be noted that there must be strict prefabrication tolerances, and the prefabricated parts should also be numbered according to the specified requirements, so as to facilitate our quality control. Afterwards, as for the processing steps of the common plate flange air duct, we should pay attention to the pairing of the butt welding joint of the fabric air duct welding the Wuxi ventilation duct. In this regard, we should pay attention to the inner wall is flush, and the In terms of the amount of misalignment, it is necessary to pay attention not to exceed 10% of the wall thickness, otherwise it will affect the equipment quality of the pipeline
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