When using concrete pump truck, it is advisable to check regularly on concrete delivery pipe as follows:(a) Check whether the concrete delivery pipe is worn and whether the clamp is loose or damaged before each operation.When using concrete pump truck, it is advisable to check regularly on concrete delivery pipe as follows:(a) Check whether the concrete delivery pipe is worn and whether the clamp is loose or damaged before each operation. When using concrete pump truck, it is advisable to ...

When using concrete pump truck, it is advisable to check regularly on concrete delivery pipe as follows:(a) Check whether the concrete delivery pipe is worn and whether the clamp is loose or damaged before each operation.