As a leading supplier of advanced drainage solutions, TrueNorth Steel is pleased to recognize the formal approval of High-Strength Polyethylene Laminated Corrugated Steel Pipe (HPL CSP) by the American Association of State Highway and Transportation Officials (AASHTO). This product innovation sets a new standard in drainage infrastructure, combining advanced materials with the proven steel strength to deliver unmatched performance, durability and long-term value.
Designed to outperform traditional solutions, HPL CSP features a 20-mil polyethylene laminate, more than twice the standard thickness, for enhanced environmental protection and corrosion resistance. Its reinforced mesh construction delivers enhanced durability in harsh conditions and rugged applications. HPL CSP also exceeds ASTM adhesion and abrasion standards by three times, ensuring long-term coating integrity that holds up during transport, installation and decades of service.
“With 80 years of experience, we know successful infrastructure starts with aligning the right product to the right application,” said Jason Mayer, Vice President of Sales, Manufactured Products at TrueNorth Steel. “AASHTO’s approval of HPL CSP validates what we’ve seen in the field. Steel consistently outperforms other materials in availability, longevity, ease of installation, sustainability, and customization. HPL adds even greater durability to an already proven solution, advancing project timelines and preserving budgets.”
With up to three times fewer CO₂ emissions during production and installation compared to alternatives, steel remains the top choice for sustainable infrastructure. Its 100% recyclability and reduced site impact make it a smarter, more environmentally responsible solution. Even at the end of its service life, CSP, and HPL CSP, can be fully recycled, reinforcing steel’s role in advancing long-term, sustainable construction practices.
TrueNorth Steel continues to lead the way in engineered drainage solutions, with our proven success using HPL CSP underscoring our commitment to smart materials, sustainable practices, and long-term value. Our team’s extensive product knowledge and experience working with engineers and project owners is how we bring confidence to every job and recommend solutions that work.
