corrugated steel pipe is composed of two half round segments which are bolted together to form a round pipe. There two standard method to form a round pipe. flanged nestable corrugated steel pipe and overlapped corrugated steel pipe. It suitable for the small diameter pipe and easy to ship to the oversea marktert
Introduction to Corrugated Steel Culvert Pipes Assembled by Half-Round Parts
Corrugated steel culvert pipes assembled by half-round parts are a highly efficient and versatile infrastructure solution designed for drainage, stormwater management, and small bridge applications. These pipes consist of two precisely engineered semi-circular segments that are bolted together on-site to form a complete circular conduit. This modular design not only simplifies transportation—especially for overseas export—but also ensures rapid installation with minimal disruption to surrounding environments.
Manufactured from high-quality carbon steel and protected by robust hot-dip galvanization, these corrugated steel culvert pipes offer exceptional durability, corrosion resistance, and structural integrity. With a service life exceeding 70 years under standard conditions, they represent a cost-effective, long-term alternative to traditional concrete or plastic piping systems.
Qingdao Regions Trading Co., Ltd (also known as Qingdao Climber), a leading corrugated steel structure manufacturer in China, specializes in producing these half-round assembled culvert pipes in a wide range of diameters, profiles, and custom configurations to meet international engineering standards and project-specific requirements.
Why Choose Half-Round Assembled Corrugated Steel Culvert Pipes?
Structural Efficiency and Ease of Installation
Unlike monolithic pipes, the half-round assembly method allows for:
Simplified logistics: Flat-packed or nested modules reduce shipping volume and cost.
Faster field assembly: No heavy lifting equipment required; two workers can typically assemble a pipe section in minutes using standard tools.
Flexibility in alignment: Ideal for curved or uneven terrain where rigid pipes may fail.
Superior Corrosion Protection
Each steel plate undergoes hot-dip galvanization with a minimum zinc coating of 610 g/m², extendable up to 1200 g/m² based on environmental demands (e.g., coastal, acidic, or high-moisture regions). Additionally, a bitumen coating is applied at joints during assembly to provide extra waterproofing and anti-corrosion protection.
Compliance with Global Standards
Our products comply with:
Chinese Standard: JTT 791-2010
American Standard: AASHTO M36 / ASTM A760
Custom certifications available upon request
Technical Specifications Table
| Parameter | Details |
|---|---|
| Material | Carbon Steel (Q235B / Q345B; equivalent to S235JR / S355JR) |
| Pipe Diameter Range | 400 mm – 3000 mm (16" – 120") |
| Steel Plate Thickness | 1.5 mm – 3.0 mm (customizable) |
| Corrugation Profiles | • 68×13 mm • 125×25 mm • 150×50 mm |
| Zinc Coating | 610 g/m² (standard), up to 1200 g/m² (optional) |
| Bitumen Coating | Applied on joint surfaces during assembly |
| Maximum Cover Depth | Up to 60 meters (depending on profile and soil conditions) |
| Assembly Method | Bolted connection of two half-round segments |
| Joint Type | Overlapping/Annular flanged/Nestable |
| Design Life | ≥70 years (with proper installation and maintenance) |
| Standards Met | JTT 791-2010, AASHTO M36, ASTM A760 |
Note: All dimensions and specifications can be customized based on project drawings or client requirements.
Let’s build resilient infrastructure—together.
| Diameter(mm) | Filling height and correspondent Thickness | |||||||||||
| 0.6m | 0.7m | 0.8m | 0.9m | 1m | 2m | 3m | 5m | 7m | 9m | 10m | 13m | |
| 400 | 2.50 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.50 |
| 500 | 2.50 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.50 |
| 600 | 2.50 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.50 |
| 700 | 2.50 | 2.50 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.50 |
| 800 | 2.50 | 2.50 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.50 |
| 900 | 2.50 | 2.50 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.50 |
| 1000 | 3.00 | 2.50 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.50 | 3.00 |
| 1100 | 3.00 | 2.50 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.50 | 3.00 |
| 1200 | 3.00 | 2.50 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.50 | 3.00 | 3.00 | ||
| 1300 | 3.00 | 2.50 | 2.50 | 2.00 | 2.00 | 2.00 | 2.50 | 2.50 | 3.00 | 3.00 | ||
| 1400 | 3.00 | 2.50 | 2.50 | 2.50 | 2.50 | 2.50 | 3.00 | 3.00 | ||||
| 1500 | 3.00 | 2.50 | 2.50 | 2.50 | 2.50 | 3.00 | 3.00 | |||||
| 1600 | 3.00 | 3.00 | 2.50 | 2.50 | 2.50 | 3.00 | 3.00 | |||||
| 1700 | 3.00 | 3.00 | 3.00 | 3.00 | 3.00 | |||||||
| 1800 | 3.00 | 3.00 | 3.00 | 3.00 | ||||||||
Detailed Product Structure & Assembly Process
1. Half-Round Segments
Each pipe is fabricated from two identical semi-circular corrugated steel plates. The edges are pre-punched with precision-aligned bolt holes to ensure seamless mating.
2. Flanged vs. Overlapping Design
Flanged (Nestable) Type: Features integrated flanges that allow pipes to be nested inside one another during shipping—maximizing container space utilization.
Overlapping Type: One segment overlaps the other at the seam, secured with high-strength bolts and sealed with bitumen tape for watertight performance.
3. On-Site Assembly Steps
Lay foundation (gravel bed or concrete base as per design).
Position first half-round segment.
Align and bolt the second segment.
Apply bitumen sealant along the longitudinal joint.
Backfill in layers, compacting as per engineering specs.
This process typically takes 30–60 minutes per pipe section, significantly faster than cast-in-place alternatives.
Application Scenarios
Corrugated steel culvert pipes assembled from half-round parts are ideal for:
Highway & Railway Culverts: For cross-drainage under roads and tracks.
Stormwater & Drainage Systems: Municipal and rural flood control.
Small Bridges & Pedestrian Underpasses: Lightweight yet load-bearing structures.
Pipeline Rehabilitation: Slip-lining existing deteriorated pipes.
Wildlife Crossings: Eco-friendly tunnels beneath highways.
Utility Conduits: Housing cables, water lines, or gas pipelines.
Mining & Agricultural Drainage: Temporary or permanent dewatering solutions.
Their adaptability makes them suitable for both permanent infrastructure and emergency/temporary installations in remote or developing regions.
Raw Materials & Surface Treatment
High-Grade Carbon Steel
We source premium-grade steel coils certified to Q235B (yield strength ≥235 MPa) or Q345B (≥345 MPa), equivalent to European grades S235JR and S355JR. These materials ensure:
High tensile strength
Excellent weldability and formability
Consistent performance under dynamic loads
Dual-Layer Corrosion Defense
Hot-Dip Galvanization: Immersion in molten zinc at >450°C creates a metallurgically bonded coating that resists abrasion and chemical degradation.
Bitumen Coating: Applied to internal and external joint areas during assembly to prevent moisture ingress and electrochemical corrosion.
This dual-protection system is especially critical in aggressive environments such as saline soils, industrial zones, or tropical climates.
Raw material – high-strength carbon steel coils (Q235B/Q345B) for corrugated steel culvert pipe manufacturing, ready for roll-forming and galvanization.
Semi-finished corrugated steel culvert segments – precision-formed half-round sections with pre-punched bolt holes, stored in factory warehouse prior to assembly and shipping.
Company Profile: Qingdao Regions Trading Co., Ltd (Qingdao Climber)
Basic Company Information
Company Name: Qingdao Regions Trading Co., Ltd (Brand: Qingdao Climber)
Nature: Professional corrugated steel structure group company
Production Capacity: ~1,500 tons of corrugated steel products per month
Headquarters: Qingdao, Shandong Province, China
Years in Operation: Over 10 years specializing in export-oriented corrugated steel solutions
Main Products
We manufacture a comprehensive range of corrugated steel structure products, including:
Corrugated steel culvert pipes (round, arch, box types)
Structural plates for tunnel lining and shelters
Custom-profile metal pipes for specialized projects
Half-round assembled culverts (optimized for export)
All products are available in multiple diameters, thicknesses, and corrugation profiles, with full customization support for non-standard designs.
Finished corrugated steel culvert segments (half-round arches) stored in the factory warehouse, ready for quality inspection and shipment.
Global Market Presence
Our products have been successfully delivered to over 20 countries, including:
Asia: India, Malaysia, Mongolia
Africa: Ethiopia, Kenya, Sudan, South Sudan
Oceania: Australia, Papua New Guinea
Americas: Bolivia
We understand the unique regulatory, logistical, and climatic challenges in each region and tailor our solutions accordingly.
Logistics & Export Capability
Modular Design: Products ship in disassembled form to minimize freight costs.
Port-to-Port Shipping: We handle FOB, CIF, and DAP terms to any global port.
Door-to-Door Delivery: Available in select countries through trusted partners.
Packaging: Seaworthy wooden crates or steel pallets with moisture barriers.
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Corrugated steel culvert pipes packed in a 40-foot shipping container — modular half-round segments stacked horizontally with wooden spacers and securing straps, optimized for sea freight export to global markets.
Service Advantages – Your Trusted Partner in Infrastructure Solutions
1. Over a Decade of Export Experience
Since 2013, Qingdao Climber has focused exclusively on overseas markets, gaining deep expertise in international standards, customs clearance, and cross-border project coordination.
2. Personalized Project Support
From initial inquiry to final delivery, our team provides:
Technical consultation on pipe selection and installation
CAD drawings and load-bearing calculations
Sample provision and third-party inspection coordination
Multilingual communication (English, Spanish, French, Arabic support)
3. Reliable On-Time Delivery
With a dedicated production schedule and in-house quality control, we maintain a 98%+ on-time delivery rate. Lead times typically range from 15–30 days after order confirmation.
4. Rapid Response & Full-Process Service
Inquiry Response: Within 24 hours
Dedicated Account Manager: Single point of contact throughout the project lifecycle
After-Sales Support: Installation guidance, troubleshooting, and warranty assistance
5. Customer-Centric Philosophy
We prioritize long-term partnerships over one-time sales. Every project is treated as a reflection of our brand—quality, reliability, and integrity are non-negotiable.
Why Our Half-Round Corrugated Steel Culverts Outperform Competitors
| Feature | Qingdao Climber | Typical Suppliers |
|---|---|---|
| Zinc Coating | 610–1200 g/m² (verified) | Often <500 g/m² (unverified claims) |
| Material Certification | Mill test reports provided | Rarely available |
| Customization | Full diameter/thickness/profile flexibility | Limited standard sizes |
| Export Packaging | Optimized for container loading | Generic bundling |
| Technical Support | Engineering-level assistance | Sales-only interaction |
| Lead Time | 15–30 days | 45+ days common |
Conclusion: A Future-Proof Solution for Modern Infrastructure
Corrugated steel culvert pipes assembled by half-round parts represent the perfect fusion of engineering innovation, cost efficiency, and global adaptability. Whether you're constructing rural drainage in Kenya, reinforcing a mining access road in Bolivia, or building eco-passages in Papua New Guinea, Qingdao Regions Trading Co., Ltd delivers a product that meets the highest standards of performance and durability.
With our robust production capacity, decade-long export experience, and unwavering commitment to customer satisfaction, we are your ideal partner for corrugated steel culvert solutions worldwide.
Contact Us Today for a Custom Quote!
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