| 1 | U-shaped hot-rolled sheet piles | Interlocking steel sections with a U-shaped cross-section. The neutral axis is generally close to the interlock, making the interlock condition important in structural design. | EN 10248 S270GP S355GP ASTM A572 Grade 50 | Temporary excavation support, cofferdams, riverbank protection, quay walls, flood barriers, and foundation works. | Efficient installation, broad availability, reusable sections, and good suitability for temporary and permanent retaining structures. | Interlock strength, corrosion allowance, driving energy, wall stiffness, and possible loss of section efficiency caused by interlock slip. | Europe, Asia, North America, South America, and marine construction markets worldwide. |
| 2 | Z-shaped hot-rolled sheet piles | Interlocking steel sections with a Z-shaped profile. The interlock is located near the outer fibers, which helps provide a high bending section modulus per unit mass. | EN 10248 S355GP S430GP ASTM A572 Grade 50 | Deep retaining walls, port structures, bridge approaches, flood defenses, and permanent earth-retaining systems. | High bending efficiency, strong wall stiffness, and favorable steel consumption for long and heavily loaded retaining walls. | Interlock shear transfer, connection integrity, driving resistance, corrosion exposure, and wall alignment during installation. | North America, Europe, East Asia, the Middle East, and major international port projects. |
| 3 | Straight-web sheet piles | Flat or nearly flat steel sections with interlocks at the edges. They are commonly used where tensile interlock forces and cellular construction are more important than bending capacity. | EN 10248 S270GP S355GP | Circular cells, diaphragm-type cells, breakwaters, temporary isolation structures, and special marine retaining systems. | Strong interlock engagement for cellular structures and suitability for forming circular or diaphragm-shaped walls. | Lower bending efficiency than many U- and Z-shaped profiles; cell geometry, hoop tension, and interlock tensile capacity require careful checking. | European marine works, Asian ports, coastal infrastructure, and specialized heavy civil projects. |
| 4 | Cold-formed sheet piles | Sheet piles manufactured by cold forming steel strip or plate into interlocking profiles. They are often selected for lighter retaining applications and site-specific dimensions. | EN 10249 ASTM A572 ASTM A690 | Small excavations, landscaping, flood control, light bulkheads, utility trenches, and temporary construction support. | Flexible production, competitive weight for light-duty applications, and suitability for shorter lengths or customized profiles. | Forming tolerances, local buckling, corner strength, interlock performance, and lower suitability for severe driving or heavy marine loading. | Europe, North America, Australia, and light civil construction markets in Asia. |
| 5 | Combined wall systems | A high-capacity retaining system formed by primary elements, such as large tubular piles or king piles, connected with secondary sheet piles. | EN 10248 EN 10219 S355 S420 | Deep-water quay walls, heavy-duty berths, container terminals, large cofferdams, and structures exposed to high lateral loads. | High bending capacity, long retained heights, efficient load distribution, and strong performance in demanding marine environments. | Connection design, differential driving behavior, pile verticality, corrosion protection, and installation sequencing. | Major ports in Europe, Asia, North America, the Middle East, and Oceania. |
| 6 | Temporary excavation sheet piles | Steel sheet pile walls installed for the duration of construction and removed or cut off after the permanent works are completed. | EN 10248 S270GP S355GP ASTM A572 | Basements, subway stations, pipelines, bridge foundations, utility corridors, and open-cut excavations. | Fast installation, water reduction when interlocks are reasonably tight, reuse potential, and relatively compact site footprint. | Ground vibration, noise, nearby structures, groundwater pressure, extraction feasibility, and residual deformation after removal. | Urban construction markets worldwide, particularly Europe, North America, and East Asia. |
| 7 | Permanent quay-wall sheet piles | Sheet pile walls designed to remain in service as the primary retaining and sometimes load-bearing element of a waterfront structure. | EN 10248 S355GP S430GP ASTM A690 | Harbor walls, wharves, jetties, ferry terminals, inland waterway facilities, and industrial waterfronts. | High construction speed, reduced excavation compared with some gravity structures, and adaptability to variable water depths. | Marine corrosion, tidal zones, cathodic protection, anchorage, scour, seismic loading, and long-term inspection requirements. | Coastal and inland ports across Europe, Asia-Pacific, the Americas, Africa, and the Middle East. |
| 8 | Flood-defense sheet pile walls | Interlocking steel walls used to reduce seepage, retain flood embankments, or form barriers against temporary or permanent water levels. | EN 10248 S355GP ASTM A572 ASTM A690 | River embankments, levees, storm-surge barriers, pumping stations, drainage channels, and coastal resilience projects. | Small construction footprint, rapid deployment, effective cutoff function, and compatibility with staged flood-protection upgrades. | Hydraulic gradients, seepage paths, overtopping, scour protection, corrosion, and exposure to debris impact. | Western Europe, North America, Japan, Southeast Asia, and low-lying coastal regions worldwide. |
| 9 | Seismic and high-strength sheet piles | Sheet pile systems using higher-strength steel or enhanced section capacity for projects exposed to significant lateral, cyclic, or earthquake-related demands. | S430GP S550GP ASTM A690 ASTM A572 Grade 65 | Seismic ports, bridge abutments, deep excavations, landslide stabilization, and infrastructure in high-hazard zones. | Higher yield strength, improved resistance-to-weight ratio, and potential reduction in wall thickness or overall steel tonnage. | Ductility, low-cycle fatigue, weldability, interlock behavior under cyclic loading, and compatibility with local seismic codes. | Japan, the west coast of North America, New Zealand, Turkey, Chile, Indonesia, and other seismic regions. |
| 10 | Corrosion-resistant marine sheet piles | Steel sheet piles selected or protected for long-term exposure to seawater, splash zones, tidal action, polluted water, or aggressive soil conditions. | ASTM A690 EN 10248 S355GP Coated or protected steel | Coastal defenses, offshore support facilities, marine terminals, seawalls, shipyards, and industrial waterfront structures. | Improved durability planning through suitable steel selection, coatings, cathodic protection, and designed corrosion allowances. | Corrosion rate assessment, coating damage during driving, tidal and splash-zone detailing, weld protection, and inspection access. | Global coastal markets, including Northern Europe, East Asia, the Gulf region, North America, and Australia. |
