Internal vs External Restrained Ductile Iron Pipes joints.
I would like to know the advantages and disadvantages of using internally restrained ductile iron pipe joints compared to the externally restrained ductile iron pipe joints in any #Pipelines project.
What are the maintenance disadvantages of both these approaches?
How difficult is it to dismantle both types of these joints?
Please share your experience with both internally and externally restrained ductile iron pipes.
Which do you think give better results?