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 POLYPLAST ULTRA B4500 is a heavy-duty, 4.5 mm thick, torch-applied waterproofing membrane manufactured with SBS-modified elastomeric bitumen and heavy-duty non-woven polyester core reinforcement. Its HMHDPE film underside enables heat welding, while the top surface is available in plain HMHDPE or mineral granule finish. It forms a durable, continuous waterproofing layer designed for structural and below-ground applications exposed to hydrostatic pressure.
The membrane is particularly suited for raft foundations, basement retaining walls, below-ground structures, podium decks and water-retaining structures, where high mechanical strength and reliable waterproofing performance are required.
MAK HYPERFLEX HYBRID POLYUREA is a two-component, 100% solids, solvent-free hybrid polyurea waterproofing membrane designed for high-performance waterproofing and protective coating applications. Applied using high-pressure heated spray equipment, it forms a seamless, highly durable membrane with exceptional flexibility, abrasion resistance, chemical resistance, and weatherability.
The product is ideal for large-scale waterproofing, industrial flooring, infrastructure protection, and demanding environments requiring rapid curing and long-term durability.
MAK TURBO GROUT is a rapid-setting, high-performance cementitious grout designed for fast repair and anchoring applications. It develops high early strength, allowing quick return to service, making it ideal for urgent repair works and time-sensitive projects.
The product provides excellent bonding, non-shrink properties, and durable performance under load.
Real-World Applications of Makphalt's High-Performance Solutions
