O-Pile®

Build a better wall, quicker.

A certified O-Pile® system is a contiguous pipe sheet pile® system featuring an extra-strong "ball-and-socket" type connection that can be welded along the full length of the pipe to create a continuous, watertight sheet pile wall that can be either temporary or permanent. (As of 2026, physical testing carried out on actual samples has shown interlocking results of the O-Pile "ball-and-socket" connection at over 27 kips/in.)

The O-Pile® DTH (down-the-hole) system can hammer through obstructions using a guided template placed above the waterline or ground. The O-Pile® system can be assembled off-site or on-site for greater flexibility. This means that if a required section is, say, 60 feet or greater and cannot be easily transported, on-site assembly of the O-Pile can save time and help avoid delays inherently associated with transporting oversized items. On the other hand, if there is limited job site space, the O-Pile® sections can be prefabricated near or far from the site depending on project conditions and needs. Often, steel mills and production plants do not have free space available for complex fabrication on site, so sections previously had to be shipped multiple times before reaching the actual job site.

In pipe sheet pile wall design, bending moment capacity plays a major role in determining how efficiently a system can resist load. O-Pile® is built around a pipe-based geometry with welded connectors that form a continuous wall, and one of its key advantages is how that geometry works together with steel grade selection and section properties to produce a high strength-to-weight ratio.

O-Pile® systems are presented as having a higher strength-to-weight ratio than other combined sheet pile walls because they can be made using high strength coiled steel. That matters because the system is available in grades such as X110, which provides 110,000 yield strength, while hot rolled sheet piling is described as being limited to less than 65,000 and typically using steel with a yield strength of 50,000. According to the technical description, choosing stronger steel grades has a direct impact on the structural resistance of the wall.

This is one of the main reasons the system is positioned as a high performance solution. When higher strength steel is used, engineers may be able to reduce pile diameter and wall thickness while still maintaining the required resistance. That creates a more efficient section, not simply a heavier one.

The Certified O-Pile® System is an innovative and rapidly growing construction method that use pipes to create foundations, barriers, and retaining walls. The system uses steel pipes with welded PilePro® connectors to form a continuous pipe sheet pile wall. This approach offers a cost-effective solution with exceptional strength and durability.

O-Pile® systems are a stronger, more efficient, durable, alternative to Z-sheet pile, combined sheet pile utilizing pipes or beams, slurry, secant, continuous concrete walls and other conventional concrete constructions.

The system uses pipe sections with pre-attached connectors allowing one entire section to be driven into the next to form a continuous steel wall with a similar load bearing element. You can drive predictably into pure rock, if necessary, as well as dial-in your corrosion and bending moment needs separately. O-Pile® is versatile and readily available, as you can use your local pipe plant or supplier. Some of the largest sheet pile jobs in North America that are currently being built are specified using the O-Pile® system.

Key features include:

• Faster and more cost-effective alternative to other sheet pile systems and conventional concrete construction
• Can be configured to corrosion-tolerance requirements
• Can be specified by bending moment due to the wide variety of steel grades available
• Can be built from locally available pipes rather than expensive imported steel piles
• Powered by the ball and socket interlock for maximum strength, flexibility, and compatibility