Corrugated Steel Pipes for Drainage and Culvert Applications

Corrugated steel pipes are versatile and robust drainage solutions engineered for long-term performance in demanding environments. Constructed from high-quality steel, these pipes feature a corrugated profile that significantly enhances strength and stiffness while minimizing weight.  

Available in various shapes, including round, pipe-arches, and horizontal ellipses, these pipes are adaptable to a wide range of applications. From culverts and storm drains to irrigation channels and underground utilities, corrugated steel pipes offer reliable and cost-effective solutions for diverse infrastructure projects.  

Types of Corrugated Steel Pipes

• Round Corrugated Steel Pipe (CSP, CMP, CASP, CAP):
  Designed in a cylindrical shape, primarily used for culverts, drainage systems, and underground infrastructure due to its structural strength and efficient water flow capacity.
• Pipe-Arches (CMPA, CSPA, CASPA, CAPA):
  Arch-shaped pipes suitable for bridge construction and large-span structures. They are capable of handling heavy loads while offering effective water conveyance.
• Horizontal Ellipse Corrugated Pipe:
  Elliptical in shape, ideal for underground utilities and drainage applications. Its structure provides excellent stability and resistance to water flow pressure.
• Flared End Section:
  Features a widened flared end for seamless connections to pipes or other structures, making it an effective solution for culverts and water management systems.
• Banded Corrugated Steel Pipe:
  Reinforced with a steel band around its circumference, offering additional strength and stability. Commonly used for bridge abutments and heavy-load-bearing structures.

Performance of Corrugated Steel Pipes

• Rigidity Test:
  The radial deformation remains ≤0.1d under a concentrated load of 0.75kN or a uniformly distributed load of 1.5kN, ensuring structural stability under pressure.
• Anti-Permeability Test:
  With a water-cement ratio of 0.5, the pipe withstands a 30-minute irrigation test without any water or slurry leakage, ensuring excellent impermeability.
• Tensile Test:
  The pipe wall remains intact under an axial tension of 5kN, demonstrating exceptional tensile strength and durability.
• Pull-Out Test:
  When embedded in concrete, the pull-out force exceeds 2.3 times the design force for anchor bolts, showcasing superior anchoring performance.
• Bending Test:
  The pipe maintains its integrity with no water or slurry leakage when bent at a radius of curvature equal to 30d, highlighting excellent flexibility and resistance to deformation.

Corrugation Profiles and Types

Specification of Corrugated Steel Pipes

• Material: Steel Plate: Q235 or SS400
• Plate Thickness: Ranges from 1.5mm to 8mm
• Pipe Diameter: Available sizes from 400mm to 9000mm
• Corrugation Profiles: 68×13mm, 125×25mm, 150×50mm, 200×55mm, 300×110mm, 380×140mm, and 400×150mm
• Depth of Fill: Supports a depth range of 1.5m to 60m
• Anti-Corrosion Treatment: Primary Coating: Hot-dip galvanized layer ≥ 84μm (610g/㎡); Secondary Coating: Asphalt (bitumen) or epoxy resin coating for enhanced durability
• Service Life: Designed for a lifespan of ≥80 years
• Standards:Manufactured to comply with JTT 791-2010 or AASHTO M36

Advantages of Corrugated Steel Pipes

• Long Service Life: Available in various thicknesses and protective coatings, ensuring durability and reliability for extended use.
• High Structural Strength: Engineered to handle heavy live loads and deep burial soil pressures without compromising performance.
• Quality Assurance: Full traceability with verifiable data ensures consistent product quality and reliability.
• Sustainability: Made from steel, the world’s most recycled material, offering an environmentally friendly solution.
• Lightweight Construction: Easy to transport, handle, and install, reducing labor costs and time.
• Cost-Effective: Provides an economical solution for both initial investment and long-term life cycle costs.
• Design Flexibility: Available in a range of sizes, lengths, and customizable fittings to meet specific project requirements.

Applications of Corrugated Steel Pipes

• Highway, Railway, and Waterway Infrastructure:
  Used as conduits, culverts, and negative wells for efficient water drainage and flow management.
• Bridge Structures:
  Ideal for load-bearing structures in permanent and temporary bridges, ensuring stability and durability.
• Urban Drainage Systems:
  Serves as city drain pipes, rainwater conduits, and sewage systems for effective water management in urban environments.
• Underground Utilities:
  Suitable for underground utility corridors and shared spaces, providing a reliable and organized infrastructure solution.
• Bridge and Culvert Rehabilitation:
  Widely used for strengthening and rebuilding existing bridges and culverts, extending their service life and performance.

Specification