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 SUPER SHIELD TPO is a high-performance, heat-weldable thermoplastic polyolefin (TPO) waterproofing membrane available in 1.2 mm and 1.5 mm thicknesses. It is designed for roof waterproofing and heat-reflective protection in both new and existing structures.
The membrane features a white textured heat-reflective top layer and grey bottom layer, providing long-term protection against water ingress and extreme weather conditions while maintaining flexibility and structural integrity.
MAK ELASTOTHANE ALP 111 is a single-component waterproofing coating based on aliphatic polyurethane technology. After curing, it forms a seamless, highly flexible and durable waterproof membrane with excellent crack-bridging performance.
Transparent Acrylic Dispersion Coating for Stone, Masonry & Concrete Surfaces
MAK CLEARCOAT AC is a high-performance, water-based transparent protective coating based on advanced acrylic dispersion technology. It is designed for natural stone, concrete, masonry, mortar joints and mineral façade surfaces, providing long-lasting protection while maintaining the substrate’s original appearance.
Its self-crosslinking polymer technology provides strong adhesion, high alkaline resistance and excellent protection against staining, efflorescence, dirt accumulation and water absorption.
Real-World Applications of Makphalt's High-Performance Solutions
