Pipes with slip welding joints to be used with aggressive waters can be protected by an additional sealant. The material, which is supplied in normal commercial cartridges, is applied to the joint with a cartridge gun before the pipe ends are joined. The list of accessories provides information on the quantities of materials required.
Provided the given quantities are used, no further steps are required once the pipes are aligned for welding. Also, there is no need for pigging the joint.
The lining material depends on the water quality. A polyurethane-based material is used for wastewater line pipe and a silicon-based material for natural water to be treated to potable water standards.