6. It is strictly forbidden to open the pipe joints when there is pressure in the delivery pipe and the oil pipe.
7. It is strictly forbidden to remove the end hose and connect the boom to another rigid conveying pipeline.
8. It is strictly forbidden to work with the concrete placing boom.
9. After the cloth is finished, the residual concrete in the concrete pipeline should be cleaned to prevent the residual concrete in the pipe from agglomerating, causing pipe blockage, pipe bursting, and affecting normal use.
10. Do a good job of cleaning, tightening, lubricating and adjusting.