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 KOTE is a bitumen-based waterproofing coating designed to provide a durable, water-resistant protective layer on concrete and masonry surfaces.
To provide effective waterproofing for non-exposed and protected areas
To protect concrete surfaces from dampness and water ingress
To serve as a base coating in bituminous waterproofing system
MAK PRIMER is a ready-to-use, bitumen-based primer designed to improve adhesion of bituminous waterproofing membranes and coatings by penetrating and sealing porous surfaces.
To enhance bonding between substrate and bituminous systems
To seal porous concrete and masonry surfaces
To ensure proper adhesion and long-term performance of waterproofing membranes
MAK SILVER is an aluminium-pigmented, bituminous protective coating designed to provide waterproofing along with excellent heat and UV reflection for exposed surfaces.
To protect bituminous membranes from UV degradation
To reduce surface heat through reflective aluminium finish
To enhance the service life of exposed waterproofing systems
Real-World Applications of Makphalt's High-Performance Solutions
