Guardian Petrolatum Systems
Long-term corrosion protection that actively displaces moisture — proven on pipelines, valves, flanges, and structural steel in the most demanding buried and exposed environments.
Long-Term Protection That Works With the Environment
Petrolatum-based systems protect steel assets by actively displacing moisture and oxygen from the substrate, forming a durable barrier that does not harden, crack, or disbond over time. Unlike conventional coatings, petrolatum systems remain flexible throughout their service life — a critical advantage in dynamic and buried environments.
JST Group supplies and applies the full Guardian Petrolatum product range — including primer paste, inner wrap, and outer wrap — as a complete, engineered corrosion protection system for pipelines, valves, flanges, and structural steel.
Why Petrolatum Systems?
A proven corrosion protection technology — flexible, self-healing, and effective in environments where rigid coatings fail.
Excellent Water Displacement
Actively displaces moisture and oxygen from the substrate surface, forming a persistent barrier.
Self-Healing & Flexible
Flows and conforms around irregular surfaces — self-healing when damaged, unlike rigid coatings.
Minimal Surface Preparation
Can be applied over hand or power-tool cleaned surfaces, reducing shutdown time and preparation costs.
Ideal for Rehabilitation
Particularly effective for maintenance of existing pipelines and structures without full coating removal.
Where Petrolatum Systems Are Applied
Onshore Pipelines
Oil, gas, and water transmission lines requiring reliable buried corrosion protection.
Valves, Flanges & Fittings
Complex geometries and irregular shapes where rigid coatings are impractical.
Tank Bases & Structural Steel
Above-ground and buried steel structures exposed to moisture and soil corrosion.
Maintenance & Rehabilitation
Life-extension programs for aging assets without full coating replacement.
Offshore & Marine Structures
Subsea and splash-zone structures requiring durable marine-grade protection.
Process Piping
Industrial piping and mechanical connections in chemical and petrochemical plants.
How We Deliver It
From specification through to quality-controlled application — JST Group manages every stage of the petrolatum coating process.
System Specification
Engineering assessment and product selection tailored to substrate condition, environment, and operational requirements.
Surface Preparation
Hand and power-tool cleaning, solvent degreasing, and contamination removal to the required standard.
Professional Application
Field and workshop application by trained technicians — ensuring correct overlap, coverage, and wrapping technique.
Quality Control
Holiday detection, bond testing, and documentation in accordance with international standards and client specifications.
System Overview
Guardian Petrolatum Systems are supplied as a complete product package including primer paste, inner wrap tape, and outer wrap — engineered to work together as an integrated corrosion protection system.
Why JST Group for Petrolatum Systems?
- Authorised Guardian applicator — supply and installation from a single source
- Experienced field teams trained in correct wrapping, overlapping, and primer application
- Full quality documentation and inspection records provided
- Integrated with broader corrosion control programs including cathodic protection and monitoring
- Active across Southeast Asia, the Middle East, and Africa
Product and application. From one source.
Specification through to quality sign-off.
Six Components. One System.
Match the layer of your protection build-up to the right Guardian petrolatum component — from surface primer and reinforcing mastic through to inner tape and UV, PVC, or Glasswrap overwraps.
SURFACE PREP
ISO 8501 St2
CURING
No curing required
VOC CONTENT
0%
APPLICATION
Cold applied
Petrolatum Primer (ST)
Primer
Petrolatum compound with inert fillers and corrosion inhibitors. First-applied layer that profiles surface imperfections and enables uniform tape application.
- TYPE
- Petrolatum Primer
- SERVICE
- Buried & exposed
- SUBSTRATES
- Steel
- APPLICATION
- Brush or glove
- Profiles pitted or uneven steel surfaces
- Contains active corrosion inhibitors
- Surface tolerant — St2 preparation
- Non-hazardous, 0% VOC
Petrolatum Mastic (HT)
Mastic
Blended reinforced petrolatum with thermal extenders. Profiles crevices and sharp angles to eliminate bridging or voiding under tape wraps.
- TYPE
- Reinforced Mastic
- SERVICE
- High-temperature
- SUBSTRATES
- Steel / Fittings
- APPLICATION
- Hand-applied
- Fills voids around valves and flanges
- Thermal extenders for HT service
- Eliminates bridging on complex geometries
- Compatible with all petrolatum tapes
Petrolatum Tape (HT)
Inner Wrap
Inner wrap petrolatum tape for the Guardian Petrolatum HT System. Provides direct corrosion protection to the substrate in buried and exposed environments.
- TYPE
- Petrolatum Tape
- SERVICE
- Buried & exposed
- SUBSTRATES
- Steel
- APPLICATION
- Spiral wrap
- Non-woven synthetic fabric carrier
- Saturated with petrolatum compound
- Wide-spectrum corrosion inhibitors
- Cold-applied — no heat or curing
Overwrap PVC Tape
Overwrap
Plasticized PVC carrier with antifungal natural rubber adhesive. Increases mechanical resistance and dielectric strength over the petrolatum inner wrap.
- TYPE
- PVC Overwrap Tape
- SERVICE
- Buried
- SUBSTRATES
- Over petrolatum tape
- APPLICATION
- Spiral wrap
- Improves mechanical impact resistance
- High dielectric strength
- Antifungal rubber adhesive
- Conformable over fittings & bends
Overwrap PE Tape (UV)
UV Overwrap
Polyethylene carrier overwrap providing UV resistance for above-ground and exposed applications. Prevents leaching of petrolatum compounds into backfill media.
- TYPE
- PE Overwrap Tape
- SERVICE
- Above-ground / exposed
- SUBSTRATES
- Over petrolatum tape
- APPLICATION
- Spiral wrap
- UV-stable polyethylene carrier
- Prevents compound migration in backfill
- Mechanical protection layer
- Cold-applied, conformable
HD-GW Overwrap (Glasswrap)
Glasswrap
Water-activated polyurethane fiberglass tape. Sets underwater — ideal for splash zone, pipe repair, piling protection, and electrical insulation to 16kV.
- TYPE
- PU Fiberglass Tape
- SERVICE
- Above & below water
- SUBSTRATES
- Steel / Concrete / Timber
- APPLICATION
- Water-activated wrap
- Sets underwater in minutes
- High-density glassfibre reinforcement
- Electrical insulation to 16 kV
- Ideal for splash-zone piling
| System | TYPE | SERVICE | SUBSTRATES | APPLICATION |
|---|---|---|---|---|
| Petrolatum Primer (ST) | Petrolatum Primer | Buried & exposed | Steel | Brush or glove |
| Petrolatum Mastic (HT) | Reinforced Mastic | High-temperature | Steel / Fittings | Hand-applied |
| Petrolatum Tape (HT) | Petrolatum Tape | Buried & exposed | Steel | Spiral wrap |
| Overwrap PVC Tape | PVC Overwrap Tape | Buried | Over petrolatum tape | Spiral wrap |
| Overwrap PE Tape (UV) | PE Overwrap Tape | Above-ground / exposed | Over petrolatum tape | Spiral wrap |
| HD-GW Overwrap (Glasswrap) | PU Fiberglass Tape | Above & below water | Steel / Concrete / Timber | Water-activated wrap |
Need help choosing the right system? Talk to our engineering team →
Ready to Protect Your Assets?
Contact our coating specialists to discuss system selection, project scope, and application requirements for your petrolatum protection program.