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Steel Finish Options

Mild Steel Finish Options

We've mapped out the main performance, visual characteristics, and pros/cons of each one in our chart below to help you choose the right finish options for your project. But feel free to get in touch should you have any questions.

Galvanising PPC on Bare Steel Galvanising + PPC
Aesthetics Metallic / industrial, variable surface quality High quality smooth surface finish Variable quality surface finish
Corrosion Resistance High Medium High
Durability High High Medium
Surface Quality Medium High Medium
Cost Medium Low High
Ease of Repair

Small areas of damage will self-heal

Larger areas can be over-painted with a zinc-rich paint application

If base metal is exposed, coating needs to be repaired before corrosion sets in It is unlikely that galvanising will be damaged and corrosion should not occur, so repairs can be undertaken at any time
Main Advantages Longevity/minimal maintenance Compatible with stainless fixings Compatible with stainless fixings
Points to Consider

Generally a less smooth and potentially variable quality surface finish

Welds become visually prominent

Only compatible with BZP fixings which have shorter life than stainless

Corrosion of steel can set in if PPC coating is penetrated and not repaired quickly

Blemishes in galvanising can show through on PPC and potential for gassing reaction on PPC

PPC is more vulnerable to chipping than on bare steel

Best suited to

Tubular / products with internal cavities

Products with root sections that are fixed in-ground

Aggressive environments

Low maintenance sites

Where a high quality surface finish is more important than long term durability

Well managed sites where products are less likely to suffer damage

Less aggressive environments

Where long term performance and (overall) aesthetic are equally important

Aggressive environments

Not Suited to Lightweight &/or heavily welded fabrications vulnerable to distortion

Tubular / products with internal cavities

Products with root sections that are fixed in-ground

Lightweight fabrications vulnerable to distortion
Zenith removable bollard in public realm scheme
Zenith removable bollard in public realm scheme