Corrosion-proof grating, handrail, and structures for clarifiers, headworks, aeration, and chemical-dosing areas — fiberglass that won’t rust, won’t rot, and stays safe underfoot when wet.
Constant moisture and chemicals destroy steel in treatment plants
- Relentless corrosion. Chlorine, hydrogen sulfide (headworks, digesters), acids, and caustics attack galvanized and even stainless steel; once coatings fail, the rust-and-replace cycle begins.
- Slip hazards. Wet steel walkways and platforms over open channels and tanks are a safety risk.
- Costly, risky replacement. Swapping corroded grating and handrail in a live plant means downtime, confined-space entry, and work over open water.
- Endless maintenance. Painting, re-galvanizing, and replacement never stop.
FRP engineered for wet, corrosive plants
- Corrosion-proof against chlorine, H2S, acids, and caustics — decades of service with no rust or spalling.
- Slip-resistant gritted surfaces for safe footing on wet walkways and platforms.
- Lightweight (~1/4 of steel) — safer, faster installs over channels and tanks, often without cranes.
- Non-conductive & low-maintenance — no painting, no re-galvanizing.
- Long service life that turns directly into lower total cost of ownership.
What we supply
- FRP Grating — walkways and platforms over channels, clarifiers, and basins.
- Handrail & Guardrail — corrosion-proof railing.
- Ladders, Cages & Stair Treads.
- Structural Profiles — supports and platforms.
- Trench, Launder & Channel Covers.
Why FRP costs less over its life
Steel grating in a treatment plant corrodes fast — especially in headworks and digesters. FRP installs once.
| Over 25 years (illustrative) | Steel / Stainless | Crimar FRP |
|---|---|---|
| Corrosion in chlorine/H2S service | Significant | None |
| Re-coating / repair | Recurring | None |
| Replacement | Multiple times | Installs once |
| Downtime to replace in live plant | Repeated | One-time install |
| Slip safety when wet | Needs treatment | Gritted anti-slip |
| 25-yr total cost of ownership | Higher | Lower |
The decisive line: one avoided failure, shutdown, or incident dwarfs the material premium. You aren’t buying grating — you’re buying the elimination of a failure mode.
Why Crimar
Crimar Composites is the pultrusion arm of the Crimar group, serving industrial clients since 1988 — US-based engineering and customer support, FRP manufacturing in Los Angeles, USA, backed by global production capacity, and a group capability spanning pultruded products and ASME RTP-1 hand lay-up FRP.
Upgrading or building a treatment plant?
Send us your areas — channels, platforms, handrail, spans and loads — and our team will help you spec corrosion-proof FRP and provide a quote.
