GRP / composite jacketing

glass-reinforced polyester/UV-cured composite wraps.

Assessment

For: zero corrosion, sea-air immune, no galvanic issues, walkable grades exist.

Against: combustible unless fire-rated resin; higher emissivity (cooler surface — better for personnel, marginally higher loss); cost above aluminium.

Best for: coastal/chemical atmospheres where metal jackets corrode.

Surface emissivity (typical)

ε ≈ 0.90

High ε: radiates freely, COOLER touchable surface at the same duty — easier personnel-protection compliance.

FAQ

Questions on this topic

What is the emissivity of grp / composite jacketing?

≈0.90 for typical surfaces (high-emissivity surface — runs cooler to the touch at equal duty).

When is grp / composite jacketing the right choice?

coastal/chemical atmospheres where metal jackets corrode.

What are the limits of grp / composite jacketing?

combustible unless fire-rated resin; higher emissivity (cooler surface — better for personnel, marginally higher loss); cost above aluminium.