DIRAX: The Ultimate Field Joint Coating — Strength, Speed, and Durability in One System
When it comes to protecting pipeline field joints, there’s no room for compromise. The coating system has to perform — in the ditch, during pulls, and for decades after installation. That’s where DIRAX stands apart.
DIRAX isn’t just another heat-shrink system. It’s a multi-layer coating solution that uniquely combines the proven benefits of two-part epoxy technology with the toughness of triple-layer polyethylene (TLPE) mainline coatings — and then takes performance a step further.
The Foundation: Proven Epoxy Adhesion
At the heart of the system is S1301M, a high-performance two-part epoxy primer that ensures excellent adhesion to the steel substrate. This primer provides a strong corrosion-resistant foundation, allowing DIRAX to form a permanent bond that won’t age, crack, or delaminate over time.
The Strength of TLPE — and More
On top of the epoxy sits DIRAX’s reinforced heat-shrink layer, which mimics the structure of a TLPE mainline coating — a tough polyolefin adhesive and backing designed to handle abrasion, impact, and handling stresses.
But DIRAX takes it even further. Embedded within its backing is a woven fiber mesh that dramatically increases its tensile and peel strength. This reinforcement gives DIRAX the ability to withstand the high pulling forces that occur during HDD (Horizontal Directional Drilling) or other trenchless installations, where conventional shrink sleeves or wraps can sometimes fail.
Pull-Through Ready in as Little as 30 Minutes
One of the most impressive features of DIRAX is its fast return-to-service time. Once applied and cooled, the coated joint can be ready for pull-through in as little as 30 minutes — a huge advantage for contractors and crews working under tight schedules. That means less waiting around and more productivity in the field, without sacrificing long-term coating performance.
Seamless Integration and Proven Longevity
DIRAX is designed to integrate seamlessly with factory-applied polyethylene or polypropylene coatings, creating a continuous corrosion barrier that resists moisture, soil stress, and mechanical impact. Its combination of epoxy adhesion and reinforced shrink sleeve toughness results in a system that performs under the most demanding conditions — from rocky HDD pulls to hot, humid installation environments.
Why Choose DIRAX?
✅ Combines the adhesion and corrosion resistance of epoxy with the mechanical toughness of TLPE
✅ Fiber-reinforced backing provides unmatched impact and peel resistance
✅ Fast pull-through — ready in as little as 30 minutes
✅ Bonds seamlessly to factory coatings
✅ Proven performance on HDD and conventional pipeline installations worldwide
DIRAX represents what today’s field joint coatings should be — fast, strong, reliable, and built for the real-world challenges of modern pipeline construction.
Joint Specialists, Inc. stocks a full range of DIRAX materials and accessories, with quick turnaround times and decades of experience supporting field installations across North America.
If you’re looking for a field joint coating that’s tough enough for trenchless, fast enough for tight schedules, and proven to last, DIRAX is the answer.
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