ALKA · AUSTRALIAN COATINGS MANUFACTURER
Firewater Equipment & Support Steel
Corrosion protection for firewater equipment exteriors.
SERVICE & APPLICATIONS
Protection matched to the asset.
Firewater pipework, pump skids and support structures need external protection that preserves the specified finish and supports maintenance. ALKA protective systems address suitable steel surfaces around this equipment, with clear separation from the performance of the fire-protection installation itself.
Pipe and pump exteriors
Select a coating build for the substrate, indoor or outdoor exposure and required identification colour.
Supports and skids
Detail welds, edges and bolted connections so the protective build covers more than the broad visible surfaces.
Maintenance access
Keep labels, inspection points and equipment functions accessible within the approved work method.
ALKYD PRIMERS · ENAMELS · SINGLE-PACK FINISHING
Protective enamel for suitable equipment exteriors
Selected external pump frames, cabinets, supports and above-ground ancillary metalwork can be considered for a single-pack primer/enamel finish in ordinary atmospheric service. Choose the product around the metal, retained coating and environmental exposure, with the required identification colour agreed in advance.
Products to assess for the job
- ALKA 401 · Alkyd zinc phosphate primer
Prepared carbon steel; a corrosion-inhibiting primer for compatible alkyd and enamel finishing routes.
- ALKA 402 · Single-pack acrylic etch primer
A substrate-specific adhesion option for steel and suitable galvanised or aluminium components. This is a thermoplastic acrylic primer, not an alkyd.
- ALKA 410 · Rapid-cure protective enamel
A gloss finishing option for machinery, fabricated components and maintenance work over a compatible prepared and primed surface.
Select a complete, compatible primer and finish. The products above are options by role, not a blanket approval to combine every primer and topcoat.
What the applicator or specifier needs
Record the asset owner requirements, identification colours and external exposure. Treat equipment function and any mandated performance approvals as separate requirements.
Plan surface preparation around labels, seals, moving parts and inspection points. Mask items that must remain uncoated and follow the equipment manufacturer instructions.
Agree reinstatement and inspection with the maintenance team. A decorative or corrosion-protection finish does not establish equipment certification or a fire-resistance rating.
Write a usable coating schedule
Specify the substrate and preparation, exact primer and finish, individual-coat dry-film thickness, application method, thinning limits, recoat interval and service-cure requirement from current product data. For repainting, document the retained coating and a representative compatibility trial before full application.
Choose the coating for the exposure
Internal wetted surfaces, potable-water contact, fireproofing and high-temperature duty require their own approved systems.
A single-pack route can simplify small batches and routine repainting because it does not require mixing a separate hardener. It still depends on sound preparation, suitable film build and the correct recoat window. Where exposure or the required maintenance interval is more demanding, assess the relevant two-pack epoxy, polyurethane or specialist lining system.
Does fast drying mean the part is ready for service?
No. Touch-dry, recoatable, handleable and fully cured describe different stages. Use the selected product data and actual application conditions to plan each stage. Excessive film build, early overcoating or premature handling can compromise the finish; adding extra thinner or a hardener is not a substitute for the specified application procedure.
SELECT THE COMPLETE BUILD
ALKA systems for this application.
| System | Why select it | Coating build | Total DFT |
|---|---|---|---|
| ALKA-9931 General Industrial | Balanced protection, appearance and cost without requiring a zinc-rich primer Prepared steel; moderate internal or external industrial atmospheric exposure | Alka 416 single-pack epoxy coating → Alka 413 high-build epoxy → Alka 421 polyurethane finish | 225–275 µm |
| ALKA-9934 Industrial Finish | Efficient two-coat system with attractive finish, cleanability and UV resistance Prepared steel in moderate atmospheric exposure where appearance and cleanability are important | Alka 416 or project-approved Alka epoxy primer → Alka 421 polyurethane finish | 150–200 µm |
| ALKA-9932 Maintenance / Refurbishment | Reduces preparation demands and supports practical maintenance programs Existing steel where full abrasive blasting is restricted; hand- or power-tool prepared areas | Alka 412 surface-tolerant epoxy × 2 coats → optional Alka 421 polyurethane finish | 200–400 µm plus optional 50–75 µm finish |
DFT = dry-film thickness. These are nominal system totals; individual-coat thicknesses and application conditions belong in the final coating schedule.
SPECIFICATION & APPLICATION
From surface preparation to return to service.
Build the coating schedule around the substrate and the work that can be achieved on site. For refurbishment, assess the adhesion and compatibility of retained coatings before defining repair boundaries.
- 01Equipment and substrate
- 02Indoor or outdoor exposure
- 03Identification colour
- 04Manufacturer restrictions and inspection points
Record surface preparation, environmental conditions, coverage at details and coat thickness. Allow for the specified recoat and cure periods, then inspect and repair defects before release to service.
A coordinated coating build
Schematic, not to scale. Follow the selected system for products, layer count and thickness.
TECHNICAL QUESTIONS
Details that affect system selection.
Is this passive fire protection?
No. Coating the exterior of a firewater pipe or pump skid is different from protecting structural steel against fire. Any fire-rated system requires its own tested design and approved components.
What belongs in the final technical submission?
Include current TDS and SDS, substrate preparation, the product and thickness schedule, application conditions, inspection criteria and cure requirements. For chemical or immersed service, include written suitability for the actual exposure. Any required certification or durability commitment must be supported by the relevant evidence.
These systems provide corrosion protection; they are not intumescent coatings and do not establish a fire-resistance rating or equipment certification. Fire-system design, operation and acceptance remain separate.
PRODUCTS & TECHNICAL DOCUMENTS
Go directly to the product information.
Read the published technical data sheets below, or open a product overview. Request the current SDS set and confirm the document revisions for your specification before procurement.
MANUFACTURER TECHNICAL SUPPORT
Turn the service conditions into a coating specification.
Send the asset, substrate, exposure and maintenance window. ALKA can help define the coating build, preparation and technical documentation for your review.