At present, duct clamps are also gradually promoted in various types of building installation with grooved pipe joints. Its fast and reliable characteristics are being recognized by colleagues in the installation industry and are widely used in fire protection engineering construction. below to introduce the use of duct clamp under the matters needing attention?

When using the air duct clamp, we must pay attention to the quality of the incoming steel pipe, such as the tolerance of the outer diameter, the uniformity of the wall thickness, and the non-round nozzle at both ends. The incoming steel pipe shall not exceed the national standard. When loading and unloading steel pipes, the nozzle shall be prevented from deformation. Another is the measurement before the groove and the visual inspection of the nozzle. It should be checked whether the end face of the nozzle is perpendicular to the center line of the pipeline, whether the balance tolerance exceeds the standard, and the surrounding burrs have been removed. Its polishing, such as the out-of-roundness of the nozzle, if the step is larger than the standard or deformation, it should be removed. Of course, there is a very important point is the groove treatment. For example, when using a duct clamp, a support bracket should be provided, and ball bearing support points should be installed on the bracket to reduce the rotational fluctuation of the pipe when cutting grooves. Press the height of the groove firmly, and the height of the groove must meet the requirements of the product manufacturer's instructions. In particular, during the operation of the duct clamp, it should be noted that the speed gradually reaches the high level of the pressure groove, and the mold that exceeds the service life should be replaced in time. After slotting, clean the thin galvanized skin peeled off at the mouth and make anti-corrosion treatment. Trench pipe in handling, lifting, loading and unloading should be protected to avoid deformation.

The connection method of the air duct clamp is to cut the steel pipe to the required length with a pipe cutter, and check the cutting section with a flat ruler to ensure that the cutting section is perpendicular to the central axis of the steel pipe. If the cut has burrs, please use a grinder to smooth it. Subsequently, the steel pipe to be slotted can also be clamped on the slotting machine and the tailstock of the slotting machine, and leveled with a level to make the steel pipe in a horizontal state. When all this is done, the cross-section of the steel pipe processing end can be placed close to the slotting machine so that the central axis of the duct clamp is perpendicular to the roll surface. It's the only way to press the light. Jack, put the top pressure wheel close to the steel pipe, start the grooving machine, and turn the roller around. At this time, pay attention to whether the steel pipe part is still close to the slotting machine. If not, adjust the steel pipe to level. When tightening, slowly press down the jack to make the upper pressure wheel evenly roll the steel pipe to a predetermined groove depth. In particular, check the groove depth and groove width with a vernier caliper when stopping the duct clamp. After confirming that it meets the standard requirements, remove the jack and remove the steel pipe. In the use of lamps and lanterns, to understand the matters needing attention, pay attention to the maintenance after use, in order to extend its service life.

The above is about the "use of duct clamp precautions". If you still don't understand, please call us. That's all for today's knowledge. I hope I can help you. The next issue will also bring more information about it.