Know more about the specifications and dimensions of steel sheet piles
ASTM A690 U Type Steel Sheet Pile | Marine Sheet Piles
Royal Steel Group supplies ASTM A690 U steel sheet piles for marine construction, retaining walls, seawalls, bulkheads, cofferdams, port infrastructure and excavation works. Fabricated from high-strength low-alloy steel containing nickel, copper and phosphorus, this sheet pile grade is engineered to withstand corrosion in air and seawater splash zones.
Thanks to the interlocking design of U sheet piles, panels connect end-to-end to form solid retaining walls. The system boasts good bending strength and fast field installation.
| Item | Specification |
| Product | U Type Steel Sheet Pile |
| Standard | ASTM A690 / A690M |
| Current Standard | ASTM A690/A690M-24 |
| Steel Type | High-Strength Low-Alloy Steel |
| Alloy Elements | Nickel, Copper, Phosphorus |
| Profile | U-Type |
| Application | Marine & Structural Engineering |
| Length | 6–18 m or Customized |
| Surface | Bare / As Rolled / Customized |
| Production | Hot Rolled |
| Connection | Interlocking Larssen-Type / U-Type |
| Inspection | Mill Test Certificate, Dimension & Mechanical Inspection |
| Standard Certification | ASTM / EN / Project Specification |
1. Enhanced Corrosion Performance for Marine Environments
ASTM A690 was engineered for H-piles and sheet piles deployed in coastal and marine settings. With nickel-copper-phosphorus alloy composition, it delivers far better atmospheric corrosion protection compared to regular carbon steel.
2. Optimized for Splash Zone Service
This steel grade offers proven resistance against corrosion within seawater splash zones. It works well for coastal structures subject to repeated wet and dry cycles.
3. Interlocking U-Shape Geometry
The U-shaped profile enables adjacent sheet piles to lock together continuously. This popular configuration is commonly used for retaining walls, cofferdams, quay walls and other earth retention works.
4. Reliable High Structural Strength
As a high-strength low-alloy material, ASTM A690 meets heavy load requirements for marine and earth-retaining projects, while keeping site installation efficient.
5. Custom Cut-to-Length Options
Royal Steel Group supplies both standard lengths and custom lengths tailored to engineering drawings, transport limits and on-site installation conditions.
| Feature | ASTM A690 | Conventional Carbon Steel |
| Marine Application | Excellent | Project dependent |
| Atmospheric Corrosion Resistance | Improved | Standard |
| Splash-Zone Resistance | Improved | Lower |
| Alloying | Ni + Cu + P | Mainly carbon steel |
| Coastal Projects | Recommended for suitable applications | May require additional protection |
| Typical Uses | Marine, coastal, retaining structures | General retaining structures |
Royal Steel Group manufactures U-type sheet piles using tightly controlled hot rolling and forming procedures.
Our production workflow follows these key stages:
Steel melting → Slab & billet preparation → Hot rolling → U-profile shaping → Interlock check → Cutting to length → Dimensional verification → Mechanical property testing → Surface inspection → Packing and shipment.
Every production lot can undergo inspection in line with your project specifications. Material test certificates (MTC) and full traceability records are supplied for all qualified orders.
Royal Steel Group can supply different U-type profiles according to project requirements.
| Profile Example | Width | Height | Typical Application |
| U-Type | 400 mm | 100–150 mm | Light retaining structures |
| U-Type | 400 mm | 150–225 mm | Excavation & foundation support |
| U-Type | 500 mm | 200–225 mm | Retaining & marine projects |
| U-Type | 600 mm | 130–225 mm | Heavy-duty infrastructure |
Custom sizes and lengths can be discussed according to engineering drawings and project specifications.
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ASTM A690 U-type sheet piles are commonly used in:
Seawalls and coastal protection
Port and harbor construction
Dock walls
Quay walls
Bulkheads
Cofferdams
Riverbank protection
Flood-control structures
Marine retaining walls
Deep excavation support
Bridge and infrastructure projects
Temporary and permanent retaining structures
ASTM identifies dock walls, seawalls, bulkheads and excavations among the typical applications for A690 sheet piling.
Our quality control scope for ASTM A690 U-type sheet piles covers the following checks:
Chemical composition analysis
Heat number traceability tracking
Tensile property tests
Yield strength assessment
Elongation measurement
Thickness verification
Width & length dimensional checks
Straightness inspection
U-profile geometry inspection
Interlock fit examination
Surface condition review
Mill Test Certificate (MTC) issuance
ASTM A690 mandates material testing to ensure all products meet defined chemical limits, dimensional tolerances and mechanical performance criteria.
Compliant with ASTM A690/A690M standard
U-shaped sheet piles plus custom profile options
Standard mill lengths: 6–18 meters
Custom sizes and cut lengths tailored to your project
Full traceability via heat numbers
Mill Test Certificates (MTC) provided
Dimensional and mechanical property inspections
Export-grade packaging
Containerized or bulk shipment options
Technical support for your project design needs
Direct factory supply
1) Branch Office - Spanish-speaking support, customs clearance assistance, etc.
2) Over 5,000 tons of stock in stock, with a wide variety of sizes
3) Inspected by authoritative organizations such as CCIC, SGS, BV, and TUV, with standard seaworthy packaging
Steel sheet piles are bundled based on section profile, length and client specifications.
Available packing solutions:
Bundled with steel strapping
Standard export packaging
Custom marking on each bundle
Heat number labeling
Waterproof wrapping upon request
For shipment, we can arrange bulk carrier or container transport, depending on order volume, destination port and delivery schedule.
Royal Steel Group offers FOB, CIF and DDP trade terms for eligible projects.
1. What is ASTM A690 steel sheet pile?
ASTM A690 sheet pile is a HSLA steel with nickel, copper and phosphorus additions. It is made for marine structures requiring enhanced atmospheric and splash zone corrosion resistance.
2. What is a U type sheet pile?
U-type sheet piles have a U cross-section with interlocking edges. Connected together, they form a continuous retaining wall.
3. Where is ASTM A690 sheet pile used?
Typical projects: seawalls, dock walls, bulkheads, cofferdams, port infrastructure, coastal protection and excavation support.
4. Is ASTM A690 suitable for seawater environments?
It is developed for marine settings and provides better splash zone and atmospheric corrosion performance than plain carbon steel. Site exposure should still be reviewed for corrosion protection design.
5. Can you supply customized sheet pile lengths?
Yes. Royal Steel Group offers standard and custom lengths based on project drawings and shipping constraints.
6. Can I get an MTC for ASTM A690 sheet piles?
Yes. MTC and material traceability documents can be issued to meet your order and project requirements.
Working on a marine, coastal, port or retaining wall project and sourcing ASTM A690 U-type steel sheet piles?
Share your requirements including profile type, thickness, length, order volume, destination port and project specification. Royal Steel Group will prepare a technical quotation covering available dimensions, production lead times, MTC and shipping solutions.
Royal Steel Group
Website: https://www.royalsteelgroup.com/
WhatsApp: +86 13652091506
Email: admin@royalsteelgroup.com
Contact Details
Address
Kangsheng development industry zone,
Wuqing district, Tianjin city, China.
Phone
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