Surface Coating for Pipe Protection

Stage 3 of the SylWrap Pipe Refurbishment System

Epoxy surface coatings are brush applied to pipelines at Stage 3 of the SylWrap Pipe Refurbishment System to provide protection against corrosion, wear, abrasion, chemicals and other environmental factors.

Coating a pipe with epoxy creates a chemically resistant outer layer shielding the original substrate from attack. This outer layer also acts as an impermeable membrane of containment if internal corrosion breaches the original pipe wall, preventing pipe content from leaking out.

In addition, applying a surface coating increases adhesion and maximises the surface contact area with the composite wrap (added at Stage 4 of the SylWrap Pipe Refurbishment System), further strengthening repairs.

Liquid Metal is a metal-filled epoxy coating with high corrosion resistance. As well as pipe protection, it makes PCC-2 compliant repairs when used as a load transfer layer in conjunction with SylWrap HD Pipe Repair Bandage.

Ceramic Brushable is a ceramic-filled epoxy coating reinforced with silicon carbide. It has a faster work time than Liquid Metal and sets harder, offering greater protection in more abrasive environments.

A surface coating is always recommended as part of the SylWrap Pipe Refurbishment System for enhanced external protection, containment of future leaks and to act as an interface layer.

Some engineers opt not to use a surface coating to reduce costs. If skipping this stage, users must be satisfied internal corrosion will not breach the original pipe wall and cause the line to leak.

The exterior pipe surface must also be in good enough condition to be wrapped directly with the composite wrap.