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 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.
MAK INJECT 1C SOIL is a single-component polyurethane injection resin specially designed for soil stabilization, ground sealing, and water control applications. It reacts with moisture present in soil to form a rigid or semi-flexible foam, filling voids and binding loose soil particles to improve ground strength and reduce permeability.
The product is ideal for geotechnical and underground applications where soil consolidation and water ingress control are required.
MAK HYDRO INJECT 2K 902 is a two-component hydrophilic polyurethane injection resin designed for effective sealing of water-bearing cracks, joints, and voids in concrete structures. It reacts with water to form a flexible foam or gel, creating a durable and impermeable seal that stops water ingress.
The system is specially developed for controlled injection applications where flexibility and long-term sealing performance are required.
Real-World Applications of Makphalt's High-Performance Solutions
