Petrolatum Anti-Corrosion Tape for Flanges, Valves, and Fittings
AWWA C217 Compliant | Cold-Applied, Non-Hardening Protection for Irregular Steel Surfaces
Product Overview
Our Petrolatum Anti-Corrosion Tape is a cold-applied, non-woven synthetic fabric carrier fully impregnated with a neutral petrolatum compound blended with inert fillers. Designed specifically for the protection of flanges, valves, fittings, and other irregular steel surfaces, this tape provides a permanently pliable, self-sealing barrier that conforms to complex geometries where conventional coatings cannot achieve proper coverage.
The product complies with AWWA C217 (Microcrystalline Wax and Petrolatum Tape Coating Systems for Steel Water Pipe and Fittings), the American Water Works Association standard governing cold-applied petrolatum tape systems for buried, submerged, and aboveground steel water pipelines.
Key Features & Benefits
| Feature |
Benefit |
| AWWA C217 Compliant |
Meets the recognized standard for petrolatum tape systems in potable water pipeline applications |
| Cold-Applied, Primer-Free Option |
Applied directly to marginally prepared surfaces (SSPC SP 2–3) without heating or specialized equipment |
| Non-Hardening, Non-Cracking |
Petrolatum compound remains permanently soft and pliable; will not dry out or shrink over time |
| Excellent Conformability |
Conforms to irregular shapes, valves, flanges, and fittings where tape alone cannot achieve a smooth profile |
| Water and Vapor Barrier |
Highly impermeable to water, water vapor, and gases |
| Chemical Resistance |
Resistant to mineral acids, alkalis, salts, and soil organics |
| Immediate Backfill |
No curing time required; pipeline can be returned to service immediately after application |
| Wide Temperature Range |
Suitable for application across diverse climatic conditions |
Typical Properties (Reference)
| Property |
Test Method |
Typical Value |
| Thickness |
ASTM D1000 |
1.15–1.2 mm |
| Weight |
ASTM D1000 |
1.25–1.44 kg/m² |
| Breaking Strength |
ASTM D1000 |
≥ 200 N/50 mm |
| Elongation at Break |
ASTM D1000 |
10% |
| Water Vapor Transmission |
ASTM E96 |
0.006 perms |
| Breakdown Voltage (55% overlap) |
— |
≥ 16 kV |
| Cathodic Disbondment (30 days) |
ASTM G8 |
≤ 180–500 mm² |
| Resistance to Acids, Alkalis, Salts |
— |
Excellent |
| Maximum Service Temperature |
— |
50–60°C (grade-dependent) |
| Roll Widths |
— |
50–300 mm |
| Roll Length |
— |
7.5–10 m (standard) |
Values are representative of AWWA C217-compliant petrolatum tapes. Confirm against the specific CNPetro product data sheet.
System Integration for Flanges, Valves, and Fittings
Petrolatum tape is particularly suited to the protection of irregular geometries. For optimal performance on flanges, valves, and fittings, the recommended system is:
| Layer |
Product |
Function |
| 1 (innermost) |
Petrolatum Mastic / Profiling Compound |
Fills voids, builds a smooth profile over irregular shapes, bolts, and welds |
| 2 |
Petrolatum Anti-Corrosion Tape (this product) |
Primary corrosion barrier; conforms to the profiled surface and seals against moisture |
| 3 |
Outer Wrapping Tape (PVC or HDPE) |
Mechanical protection and UV resistance for exposed or high-abrasion environments |
This multi-layer approach is essential for valves and flanges, where surface irregularity requires a profiling compound before tape application to ensure complete, void-free coverage.
Compliance with AWWA C217
AWWA C217 establishes minimum performance requirements for cold-applied petrolatum and microcrystalline wax tape coating systems used on the exterior of steel water pipelines. The standard covers material requirements, application procedures, inspection, testing, and packaging.
CNPetro Petrolatum Tape is formulated to meet the material and performance requirements of this standard, making it suitable for potable water pipeline applications where AWWA compliance is specified.
Primary Applications
-
Steel water pipelines – Buried, submerged, and aboveground service (AWWA C217 scope)
-
Flanges and valves – Protection of irregular surfaces and bolted connections
-
Fittings and connections – Tees, elbows, couplings, and other complex geometries
-
Pipeline rehabilitation – Repair of damaged or aging protective coatings
-
Marine and splash-zone structures – Where water displacement and corrosion protection are required
Application Summary
-
Surface Preparation: Remove loose scale, rust, and foreign matter to SSPC SP 2 (Hand Tool Cleaning) or SP 3 (Power Tool Cleaning). High-pressure water washing (3,000–7,000 psi) is also acceptable
-
Apply Profiling Compound (for irregular surfaces): Apply petrolatum mastic to fill voids and create a smooth transition over flanges, valves, and fittings.
-
Wrap the Tape: Spirally wrap the tape with a minimum 25 mm (1 inch) overlap. For severely corrosive environments, a 55% overlap is recommended .
-
Press and Smooth: Press out air pockets and smooth all lap seams to ensure intimate contact.
-
Apply Outerwrap (if specified): Install a compatible outer wrapping tape for mechanical protection.
-
Inspect: Verify complete coverage, proper overlap, and sealed edges. No curing time is required before backfill 2.
Packaging and Availability
| Item |
Details |
| Roll Widths |
50 mm, 75 mm, 100 mm, 150 mm, 200 mm, 300 mm |
| Roll Length |
7.5 m or 10 m (standard); other lengths available on request |
| Packaging |
Individually wrapped rolls in cartons |
| Customization |
Project-specific widths and lengths available |
CNPetro — Protecting pipelines. Advancing performance.
For product data sheets, AWWA C217 compliance documentation, or technical consultation, please contact our sales team.
Keywords: petrolatum anti-corrosion tape, AWWA C217, flange protection, valve protection, fitting coating, cold-applied tape, petrolatum wax tape, pipeline corrosion protection
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