Most composite repair systems use a "spiral" wrapping method during installation. Even when systems aren’t applied in a spiral, they still require some kind of overlap to ensure proper material placement.
Why does this matter? Engineered composite repairs depend on precise material placement to maintain consistent laminate thickness. This thickness, along with other critical properties, forms the foundation of a successful repair.
A few feet of inaccurate overlap can mean the difference between a 6-layer system and a 2-layer system—something that could make the difference between a repair that’s fit for service or one that needs to be removed and redone, costing you time and money.
In today’s world of advanced technology, equipment, and automation, engineered composite systems still rely on skilled installers. Why? Because the components we repair often have complex geometries—like tees, reducers, and elbows—and are frequently located in hard-to-reach areas, sometimes less than 100 feet long. Crews must work quickly and adapt to tough conditions while maintaining quality. That’s why experienced technicians are essential to oversee the process and ensure all quality control checkpoints meet manufacturer specifications.
Over 20 years ago, HJ3 introduced a “center stitch†into their fabrics, specifically for contractors who specialize in pipe repairs. What started as a small addition has now become a vital feature used by hundreds of installers around the world.
The “Center Stitch†gives installers confidence during spiral wrapping, helping them identify the 50% overlap point without guesswork. It ensures accurate coverage every time, acting as a crucial hold point in the repair process. Without it, applicators often have to estimate or "eye ball" the layup, which becomes especially challenging on larger diameter pipes.
After two decades and thousands of successful installations, innovation remains at the heart of HJ3. We continuously seek feedback from industry professionals and customers to improve our products and deliver unmatched service. If you're an applicator or operator struggling with outdated fabric technology, tired of inconsistent results, or just feeling like you're "winging it," we’d love to hear from you. Let’s talk about how we can help you achieve better, more reliable composite repairs.
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