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Nuclear Power and Electric Power Steel Structures
As a Nuclear Power and Electric Power Steel Structures manufacturer, we match product configuration to the application, operating limits, interfaces and acceptance criteria defined for each project.
Nantong Sudong Steel Structure Co., Ltd. is a professional Nuclear Power and Electric Power Steel Structures manufacturer and supplier, integrating R&D, design, fabrication, construction, and international trade. With nearly three decades of experience since 1996, we deliver heavy steel structures for power generation facilities, including turbine halls, boiler frames, and auxiliary buildings. Our factory in Hai'an, Jiangsu, spans 50,000 square meters and is equipped with seven production lines, including six intelligent robotic welding lines and box girder lines, achieving an annual capacity of 40,000–50,000 tons.
Our structures are engineered for demanding environments, meeting international standards such as ISO 9001, EN1090 CE, and GOST. We serve Fortune 500 clients like CNOOC and China State Construction, providing reliable solutions for thermal, nuclear, and renewable power projects worldwide.
Our Product Range
We supply a comprehensive range of steel structures for power plants, each tailored to specific functional requirements:
- Power Plant Steel Structure – Main frames for turbine halls, boiler supports, and ancillary buildings, designed to withstand heavy dynamic loads and high temperatures.
- Shenhua Power Plant – A reference project showcasing our capability in large-scale utility power stations, including complex box columns and heavy plate girders.
For detailed specifications, visit our Power Plant Steel Structure page or explore the Energy & Chemical category.
Application Fit and Engineering Considerations
Power plant structures operate under severe conditions: high temperatures, vibrations from rotating equipment, and potential seismic loads. Our designs account for these factors through:
- Material selection per international standards (e.g., S235–S355, with impact testing for cold regions).
- Fatigue-resistant connections for dynamic loads.
- Fire protection and corrosion protection systems, including ISO 12944-compliant coatings.
We work with your project team to optimize member sizes and connections, reducing steel weight and overall cost while maintaining safety margins.
Critical Specifications and Quality Control
Our manufacturing process ensures precision and traceability:
| Process | Capability | Tolerance |
|---|---|---|
| Cutting | 4 laser/plasma lines | ±0.5 mm |
| Drilling | CNC 3D drilling | ±0.3 mm hole groups |
| Welding | 5 robot stations | Cloud-managed parameters |
| Surface treatment | Shot blasting + painting | ISO 12944 |
All key welds undergo non-destructive testing, and each component is numbered for full traceability. Our quality system is certified to ISO 9001, and we hold EN1090 CE for structural steel.
Configuration and Automation Integration
We offer flexible configuration options to match your project's needs:
- Structural systems: rigid frames, braced frames, or truss systems.
- Connections: bolted, welded, or hybrid, depending on site erection preferences.
- Accessories: platforms, ladders, handrails, and crane girders.
For automation, our robotic welding ensures consistent quality, and we can integrate with your BIM workflow via Tekla models. We provide 3D models for clash detection and shop drawings for fabrication.
Installation and Acceptance
We support on-site erection with detailed installation manuals and optional engineer dispatch. Our team can provide:
- Erection sequence planning and temporary bracing design.
- High-strength bolt installation guidance and torque specifications.
- Field welding procedures and inspection checklists.
Acceptance testing includes dimensional verification, weld inspection reports, and material certificates. We coordinate with third-party inspectors as required.
Maintenance and Lifecycle Support
Our structures are designed for low maintenance, but we provide:
- 10-year quality guarantee on the main structure.
- Lifetime technical consultation.
- Spare parts for connections and coatings.
We also offer re-coating schedules and inspection guidance to extend service life.
Documentation and Training
Each project includes comprehensive documentation:
- Fabrication drawings and as-built models.
- Material test certificates and weld maps.
- Installation manual and video.
We can provide on-site training for your erection crew, covering safety, bolt tightening, and welding procedures.
Packaging and Delivery
We ensure safe transport with professional packaging:
- Standard: steel binding tape, corner protection.
- Special: wooden or iron boxes for precision components.
- Shipping: container (20GP/40GP/open-top/frame) or bulk vessel for oversized items.
Our location near Shanghai Port allows efficient global logistics.
Information We Use to Configure Your Solution
To prepare a precise proposal, we need the following project inputs:
- Building dimensions, column grid, and elevation.
- Design loads: dead, live, wind, seismic, and thermal.
- Local building codes and approval requirements.
- Foundation details and interface conditions.
- Preferred material grades and coating systems.
- Erection method and site constraints.
- Delivery schedule and packaging requirements.
Send these details to our engineering team, and we will respond with a preliminary solution within 12 hours.
Frequently Asked Questions
What standards do your power plant steel structures comply with?
Our structures are designed and fabricated to meet international standards including EN 1090 (CE), ISO 9001, and GOST. We can also adapt to local codes such as ASCE, BS, or GB, depending on your project location.
Can you handle large-scale power plant projects?
Yes. With an annual production capacity of 40,000–50,000 tons and heavy lifting equipment (80-ton cranes), we have executed projects like the Shenhua Power Plant, demonstrating our ability to manage large, complex structures.
Do you provide installation services?
We offer installation guidance as standard, and we can dispatch engineers for on-site supervision as an optional service. Our team provides detailed erection manuals and remote support.
What is your typical lead time?
Lead time depends on project size and complexity. For a standard power plant structure, fabrication typically takes 8–16 weeks after drawing approval. We provide a detailed schedule in our proposal.
Can you customize structures for specific equipment loads?
Absolutely. We design supports for turbines, boilers, and other heavy equipment, considering dynamic loads and thermal expansion. Our engineering team works closely with your equipment suppliers.
Related Products and Categories
Our portfolio also includes Lightweight Partition Wall Panels, ALC Panels for applications with different operating ranges, interfaces or integration requirements.
