Slide15
When long module HDPE pipes approach to the port in Algeria, the harbor authority grants permission to proceed. The harbor tug holds the pipes to secure them.
To keep the project on a schedule, the concrete collar production was carried out in parallel with the delivery of the pipe. We used pre-cast method as concrete collar construction. The upper collar and the lower collar were fixed to the HDPE pipe by using a lift frame as shown in the figure.
The lifting frame will then be loaded with a set of the collar weight, the upper and the lower section, and then it is carefully lowered to the marked area on the pipe where the collar weights will be put in place.
The upper collar will then be slowly lowered to connect the two sections by hot dip galvanized bolts and nuts.
This procedure is repeated until installation of all collar weights is completed.

Slide15

When long module HDPE pipes approach to the port in Algeria, the harbor authority grants permission to proceed. The harbor tug holds the pipes to secure them.

To keep the project on a schedule, the concrete collar production was carried out in parallel with the delivery of the pipe. We used pre-cast method such as concrete collar construction. The upper collar and the lower collar were fixed to the HDPE pipe by using a lift frame as shown in the figure.

The lifting frame will then be loaded with a set of the collar weight, the upper and the lower section, and then it is carefully lowered to the marked area on the pipe where the collar weights will be put in place.
The upper collar will then be slowly lowered to connect the two sections by hot dip galvanized bolts and nuts.
This procedure is repeated until the installations of all collar weights are completed.