In earlier HPCL projects, pipelines had suffered leakages and corrosion within just three years of installation.
Investigations revealed that the previously used anti-corrosion systems were inadequate against:
• High soil moisture content leading to continuous exposure to dampness.
• Presence of bacteria and fungi in the soil accelerating metal corrosion.
• Inconsistent application quality, leaving micro-gaps for corrosion initiation.
The challenge was to deliver a robust, long-lasting anti-corrosion protection system that could withstand these environmental conditions and extend pipeline life beyond 20 years.
Makphalt supplied a comprehensive coal tar-based anti-corrosion system comprising:
• Mak Primekote (Primer): A coal tar-based primer that ensured strong adhesion to the pipeline surface and enhanced compatibility with the wrapping tape.
• Mak Polykote (Protective Tape): A 2mm thick coal tar tape with anti-corrosive, anti-fungal, and anti-bacterial properties.
Pipeline surface was cleaned and primed with Mak Primekote.
Mak Polykote tape was applied in double layers using a butane torching system, ensuring uniform adhesion and overlap.
The final system formed a seamless, flexible barrier resistant to soil chemicals, moisture, and microbial attack.
• Enhanced Longevity: The system offers over 20 years of corrosion protection, reducing maintenance and replacement costs.
• Zero Leakage: Eliminated the risk of early corrosion-related failures.
• Improved Reliability: Ensured long-term operational safety of critical underground gas pipelines.
• Client Confidence: HPCL approved and appreciated the performance of Makphalt’s Polykote & Primekote system, recognizing it as a reliable anti-corrosion solution for future pipeline projects.
MAK PREMIX is an instant road repair compound manufactured using a blend of bitumen, graded aggregates, and high-grade polymers. It ensures immediate bonding with the existing road surface and allows fast, durable repairs without the need for heating or curing. It is ideal for quick restoration of traffic-worthy pavements in heavily trafficked areas.
Applications
Repair of potholes on roads and highways
Utility cut repairs in urban pavements
Airfield and industrial pavement maintenance
Emergency repairs in hot, cold, rainy, or adverse weather conditions
MAK FILLER BOARD is a pre-formed compressible board used as a joint filler in expansion and construction joints. It accommodates movement, prevents stress transfer, and provides a base for sealant application in concrete structures.
Applications
Expansion and construction joints in concrete
Used in floors, pavements, and slabs
Suitable for basements, retaining walls, and precast elements
MAK POLYSCRIM CLOTH is a high-strength polyester scrim fabric used as reinforcement in waterproofing and coating systems. It enhances tensile strength, tear resistance, and dimensional stability of membranes and liquid-applied coatings.
Applications
Reinforcement for liquid waterproofing systems
Used with PU, acrylic, and bituminous coatings
Suitable for joints, corners, and critical detailing areas
Real-World Applications of Makphalt's High-Performance Solutions
