Protection of joints in elongate substrates.

摘要

A casing for a joint between weight coated pipes that are to be laid in seawater. The casing surrounds bared portion at the joint, thereby preventing anker-foulage of the joint. Each end of the casing is sealed to the weight coating on respective pipes, and the casing has at least one port of entry to allow flow of seawater into casing. The inflow of seawater, if combined with a sacrificial anode, prevents corrosion of the bared joint.