Modular steel girder bridge or arch bridge
Highlights
- Spans 20-80m, highway Grade-I / AASHTO HS-20 loading
- Bridge steel Q345qC/Q370qC per GB/T 714, -20°C toughness
- Modular segments fit 40ft containers for economical shipping
- Thermal spray zinc + epoxy + PU topcoat, 30+ year C4/C5 protection
- 100% UT on butt welds, Italy welding qualification for CE
- 7-15 day on-site erection for typical 40m span
Specifications
| Brand | Jidian Construction Materials Co., Ltd. |
|---|---|
| Product origin | Xiamen, Fujian, China |
| Structure type | Box girder / truss / arch bridge |
| Bridge steel grade | Q345qC / Q370qC (GB/T 714) |
| Span range | 20-80m single span |
| Design load | Highway Grade-I (China) / HS-20 (AASHTO) |
| Fatigue category | ISO 10721 Category 71-90 |
| Anti-corrosion | Thermal spray zinc ≥150μm + epoxy + PU (ISO 12944 C4/C5) |
| Welding standard | ISO 15614-1 procedure, ISO 9606 welder qualification |
| NDT | 100% UT on butt welds, 10% RT spot check, 100% MT on fillets |
| Design life | 50-100 years structural, 30+ years coating |
| Delivery time | 30-45 days after drawing confirmation |
| Supply capacity | 360,000 tons/year |
Product Detail
Bridge Infrastructure Pain Points & Modular Steel Solutionsions
Rural and regional infrastructure projects frequently face bridge spans that are too long for standard precast concrete beams, yet budgets too tight for custom cast-in-place construction. Modular steel girder and arch bridges fill this gap efficiently. Our box-section and truss-section girders-fabricated from Q345qC/Q370qC bridge steel per GB/T 714-are designed for spans of 20 to 80 meters, carrying highway loads up to Grade-I (China) or HS-20 (AASHTO). Components are shop-fabricated in transportable modules (max 12m length per segment for container shipping), then bolted or field-welded on site. A typical 40m single-span girder bridge can be erected in 7-15 days after foundation completion, compared to 60-90 days for cast-in-place concrete. The modular approach also enables future span extension or bridge relocation if river alignments change.
Product Advantages
• Bridge-grade steel: Q345qC/Q370qC per GB/T 714, with guaranteed notch toughness at -20°C for cold-region applications.
• Box girder & truss optionsions: Single-box, twin-box, or Pratt/Warren truss configurations engineered to your span, load, and aesthetic requirements.
• Modular shipping: Segments limited to 12m length and 3.2m width fit standard 40ft containers, drastically reducing ocean freight versus monolithic concrete beams.
• Anti-corrosion system: Thermal spray zinc (≥150μm) + epoxy sealer + polyurethane topcoat, achieving 30+ year maintenance-free service in C4/C5 marine environments per ISO 12944.
• Fatigue-rated connections: All bolted connections designed per ISO 10721 with Category 71-90 fatigue detail classification for highway loading.
• Architectural aesthetics: Steel arch and truss configurations offer visual landmarks-combining structural efficiency with architectural expression for civic infrastructure.
Welding Qualification & Non-Destructive Testingting
Bridge fabrication demands the highest welding standards. Our shop holds the China Steel Structure Manufacturing Special Level Qualification-the highest in the field. Welding procedures are qualified to ISO 15614-1, and all welders carry ISO 9606 certifications. For bridge girders, 100% of full-penetration butt welds undergo ultrasonic testing (UT) per GB/T 11345, with 10% radiographic testing (RT) spot checks. Magnetic particle inspection (MT) is applied to all fillet welds at fatigue-critical details. We also hold the Italy Welding Procedure Qualification Certificate, enabling CE-marked bridge components for European projects. Each bridge shipment includes a complete material traceability dossier: mill certificates, weld maps, NDT reports, and coating thickness records.
About Jidian Construction Materials Co., Ltd.
Founded in 2012, Jidian Construction Materials Co., Ltd. is a leading steel structure manufacturer headquartered in Xiamen, Fujian, China, with over 12 years of industry experience. We are a Vice President unit of the China Steel Structure Association. Our production facility operates advanced steel structure production lines, delivering an annual capacity of 360,000 Tons Steel Capacity and 1,000,000 m² Enclosure Output. Certifications include ISO9001, ISO14001, ISO45001, CE (EN1090), SGS, BV, and the Italy Welding Procedure Qualification. Bridge and infrastructure projects have been delivered to 50 Countries Covered across Europe, the Middle East, Southeast Asia, Africa, and the Americas, with 2,000+ Completed Projects worldwide.
Engineering & Installationtion
Design: Our bridge engineering team provides complete structural calculations, load ratings, and erection plans compliant with your local bridge design code (GB, AASHTO, Eurocode, or BS).
Manufacturing: Shop-fabricated modules with ±2mm tolerance. Complete NDT documentation and material traceability included with every shipment.
Installation: Erection sequence drawings, lifting plans, and on-site engineer supervision available for spans above 30m.
After-sales: 30-year design life guarantee, 2-year workmanship warranty, and ongoing structural health monitoring consultation.
FAQ
Q: What span lengths can you manufacture?
A: Single spans from 20m to 80m. For longer crossings, we design multi-span continuous girder or arch configurations with expansion joints.
Q: What bridge design codes do you comply with?
A: We engineer to Chinese GB 50009/50017, AASHTO LRFD, Eurocode EN 1991/1993, or British Standards BS 5400, depending on your project location.
Q: Can you provide shop drawings and calculation reports for our local review?
A: Yes. We deliver stamped structural calculation reports, material specifications, weld maps, NDT reports, and full shop drawings for your reviewing authority.
Q: How are bridge modules shipped?
A: Segments are limited to 12m × 3.2m for standard 40ft container loading. Oversized segments can be shipped via 40ft OT containers or breakbulk vessels.
Q: Do you offer on-site installation supervision?
A: Yes. For bridges above 30m span, we can dispatch qualified engineers to supervise erection, welding, and final inspection at your site.
Q: Can I request OEM manufacturing?
A: Yes. We offer full OEM/ODM services including custom branding on components, packaging, and documentation.
Related Products
FAQ
What quality certifications do your building materials hold?
Our products are manufactured under strict quality control systems and hold multiple international certifications including ISO 9001, CE, SGS, and BV. Jidian Construction Materials Co., Ltd. operates 26 production lines with advanced testing equipment, and every batch undergoes dimensional, material, and surface inspection before shipment. We also support third-party on-site inspection and pre-shipment testing by SGS, TUV, or other designated agencies. Mill Test Certificates (MTC) and quality reports are provided with every delivery.
Can I request product samples before placing a bulk order?
Yes, we provide product samples for evaluation. Small material samples such as steel coupons, panel cuttings, and fastener samples are provided free of charge, with the customer only paying for shipping. For larger samples or custom prototypes, a sample fee may apply, which is deductible from your bulk order. Please contact Jidian Construction Materials Co., Ltd. with your specific sample requirements and we will arrange shipment from our Xiamen facility promptly.
Can you print our company logo on the building materials or packaging?
Yes, we offer custom logo printing and branding services. Your company logo can be applied to product surfaces (such as panel edges, steel beam ends), packaging materials, and shipping marks. We use laser engraving, stenciling, or adhesive labeling depending on the material and your preference. This service is available for OEM orders with a reasonable MOQ. Provide us with your logo artwork (AI or vector format preferred) and we will incorporate it into the production process.
Do you provide OEM and custom manufacturing services?
Yes, Jidian Construction Materials Co., Ltd. offers comprehensive OEM and ODM services. With an annual steel processing capacity of 360,000 tons and 1,000,000 m² enclosure material output, we can manufacture products to your exact specifications, drawings, or samples. Our engineering team in Xiamen works closely with clients to optimize designs for cost-efficiency and structural performance. We have completed over 2,000 projects across 50 countries, delivering custom steel structures, panels, and building systems tailored to diverse market requirements.
What is the minimum order quantity (MOQ) for your building materials?
The MOQ varies by product type. For standard steel profiles and panels, the MOQ is typically 5 tons. For prefabricated steel structures, the MOQ is one complete set (e.g., one warehouse or workshop building). For customized OEM products, the MOQ depends on the complexity of the design. Jidian Construction Materials Co., Ltd. is flexible and can discuss specific MOQ requirements based on your project needs. Contact us for a detailed quotation.
How do you handle shipping and logistics for international orders?
Jidian Construction Materials Co., Ltd. exports to over 50 countries worldwide from our facility in Xiamen, Fujian, China. We offer both sea freight and land transportation options. For sea freight, we ship from Xiamen Port to major ports globally. For land transport, we deliver to neighboring countries via truck. We handle all export documentation, customs clearance, and can arrange door-to-door delivery through our trusted logistics partners. FOB, CIF, and DDP terms are all available.
How are your building materials packaged for transport?
We use professional packaging tailored to each product type. Steel profiles and beams are bundled with steel straps and protected with waterproof wrapping. Wall and roof panels are stacked on pallets with edge protectors and shrink-wrapped. Fasteners and accessories are packed in wooden cases. All packaging is designed to withstand long-distance sea transport and handling. Custom packaging requirements can be accommodated upon request to ensure safe delivery to your site.
What payment methods do you accept?
We accept T/T (Telegraphic Transfer) and L/C (Letter of Credit). For standard orders, the payment term is 30% advance deposit and 70% balance before shipment. For large project orders, we can negotiate flexible payment terms. All payments are processed through verified international banking channels. Jidian Construction Materials Co., Ltd. has established banking relationships that ensure secure and efficient transactions for our global clients.