76mm To 660mm ERW Pipe Highway Drainage Underground Steel Tube

1. Product Overview

Product Name

76mm To 660mm ERW Pipe Highway Drainage Underground Steel Tube

Core Standard & Product Positioning

This series of ERW electric resistance straight welded steel pipes is manufactured strictly in accordance with GB/T 3091, ASTM A53, EN 10219 and municipal highway engineering standards. Covering a complete outer diameter range of 76mm to 660mm, it is a professional buried steel pipe customized for highway underground drainage, road rainwater discharge, municipal road seepage drainage and traffic infrastructure water conveyance projects. Adopting mature ERW high-precision welding technology, the pipe body features uniform wall thickness, excellent structural compression resistance and ultra-smooth inner wall. It perfectly adapts to complex underground buried working conditions such as soil pressure, road rolling load and humid geological environment, solving common problems of traditional drainage pipes such as easy deformation, poor drainage efficiency and short service life, and is widely used in national highway, urban arterial road and rural road drainage supporting projects.

Core Highway Drainage Advantages

Aiming at the harsh working conditions of underground buried highway drainage, this ERW drainage pipe has targeted performance upgrades. It has strong anti-pressure and anti-deformation ability, which can withstand long-term vehicle rolling and soil extrusion load without pipe body collapse or distortion. The seamless welding process ensures excellent overall sealing performance, effectively avoiding underground water seepage and pipeline leakage. The smooth inner wall greatly reduces rainwater flow resistance, accelerates stormwater discharge, and prevents road water accumulation and pavement damage in rainy seasons. With customizable underground anti-corrosion treatment, it resists soil corrosion and microbial erosion, realizing long-term stable buried service and reducing later road maintenance costs.

2. Complete Technical Specifications

2.1 Dimension Range (Highway Drainage Matching)

Outer Diameter: 76mm ~ 660mm (full-size coverage for road branch drainage pipes and main trunk drainage pipelines)

Wall Thickness: 3.0mm ~ 22mm (thin-wall for conventional road drainage, thick-wall for heavy-load highway buried anti-compression pipelines)

Standard Length: 6m / 12m fixed length, 5.8–11.8m random length, support engineering fixed-length cutting, pipe end flattening and chamfering

Dimensional Tolerance: Strict municipal engineering grade tolerance, uniform pipe roundness and straightness, ensuring seamless butt joint of underground pipeline network and smooth water flow

2.2 Common Material Grades for Highway Engineering

2.3 Highway Drainage Professional Performance

Buried Compression Resistance: High structural rigidity, withstands soil overburden pressure and long-term traffic dynamic load, no permanent deformation or pipe collapse

High-Efficiency Drainage: Smooth burr-free inner wall, low water flow friction resistance, fast rainwater and accumulated water discharge, effectively preventing road waterlogging

Underground Anti-Corrosion: Adaptable to acidic, alkaline and humid soil environments, resist underground water and soil corrosion, long buried service life

Excellent Sealing Performance: ERW fine welding with tight weld seam, no leakage or seepage, avoid road foundation water soaking and settlement

Strong Weather & Geological Adaptability: Adapt to various terrain and seasonal temperature changes, no cracking or aging in long-term underground operation

3. ERW Professional Production Process for Underground Drainage

Adopt engineering-grade production process, focusing on underground compression resistance and anti-leakage performance to meet highway infrastructure construction standards:

Engineering-Grade Raw Material Selection: Select high-toughness carbon steel coils suitable for buried pipeline engineering, stable mechanical properties and strong geological adaptability

Balanced Roller Forming: Multi-pass synchronous forming to ensure uniform pipe wall thickness and regular roundness, improve overall compression resistance of the pipeline

Precision ERW Resistance Welding: Stable straight seam welding, narrow heat-affected zone, firm weld combination, no pores or cracks, ensuring pipeline tightness

Internal & External Burr Complete Removal: Eliminate welding burrs on the inner wall, ensure smooth pipeline interior, reduce drainage resistance and avoid sludge deposition

Weld Stress Relief Treatment: Eliminate welding residual stress, prevent pipeline deformation and weld cracking after underground burial

Online Precision Straightening & Sizing: Strictly control pipe straightness and size deviation to ensure accurate docking of underground pipe network

Fixed-Length Cutting & Pipe End Finishing: Flat and smooth pipe ends, convenient for on-site welding and flange connection of highway drainage projects

Buried Pipeline Pressure & Sealing Test: Batch hydrostatic test to ensure no leakage under underground working pressure

4. Strict Highway Engineering Grade Quality Inspection

Raw Material Mechanical Performance Test: Detect tensile strength, yield strength and toughness to ensure compliance with highway buried pipeline load-bearing standards

100% Weld NDT Ultrasonic Inspection: Full-length weld detection to eliminate internal welding defects and ensure underground anti-leakage performance

Buried Load Compression Test: Simulate underground soil pressure and vehicle rolling load to verify pipeline anti-deformation ability

Hydrostatic Sealing Test: Standard pressure holding test, no leakage or seepage, ensuring long-term stable operation of underground pipeline network

Anti-Corrosion Performance Sampling Test: Verify the adaptability of surface anti-corrosion layer to underground humid and corrosive environment

Third-Party Authoritative Certification: Support SGS, BV inspection, provide complete test reports for highway project acceptance

5. Core Product Advantages for Highway Underground Drainage

Superior Buried Anti-Deformation Performance: Optimized pipe wall structure and high-strength material, effectively resist soil extrusion and long-term vehicle dynamic load, avoid pipeline collapse and road pavement cracking.

High-Efficiency Water Discharge & Anti-Blocking: Ultra-smooth inner wall reduces rainwater flow resistance, accelerates drainage speed, and is not easy to accumulate sludge and sundries, solving road waterlogging problems fundamentally.

Excellent Underground Anti-Corrosion Ability: Customizable buried special anti-corrosion process, resist soil corrosion, groundwater erosion and microbial damage, greatly extending pipeline service life.

Zero Leakage Foundation Protection: Tight ERW weld seam ensures no pipeline seepage, prevents road foundation from being soaked by water, avoids foundation settlement and road damage, and protects highway structural safety.

Full-Size Engineering Matching: 76-660mm complete specification coverage, matching highway main drainage pipes, branch pipes and transitional pipes, realizing one-stop procurement for drainage projects.

High Project Cost Performance: Stable quality and long service life, lower comprehensive cost than traditional plastic drainage pipes and cast iron pipes, reducing highway later maintenance and replacement costs.

6. Main Application Scenarios

Highway Underground Drainage System: Expressway, national highway, provincial highway buried rainwater drainage main and branch pipelines

Urban Road Infrastructure: Urban arterial road, municipal road underground stormwater discharge, road foundation seepage drainage pipeline

Traffic Auxiliary Engineering: Road slope drainage, tunnel underground drainage, bridge foundation water conveyance and drainage supporting pipes

Road Reconstruction & Expansion Project: Old road drainage pipeline replacement, new road buried drainage network construction

Rural Road & Park Road: Rural highway drainage, scenic area road buried anti-blocking drainage pipeline engineering

7. Underground Anti-Corrosion Treatment & Packaging Standard

Buried Pipeline Anti-Corrosion Options

Standard Anti-Rust Treatment: Black anti-rust paint coating, suitable for dry soil underground drainage environment

Buried Special Anti-Corrosion: Epoxy asphalt coating, 2PE/3PE anti-corrosion treatment, suitable for humid, acidic and alkaline complex soil environments

Galvanized Anti-Corrosion: Hot-dip galvanized treatment, enhanced anti-erosion ability, suitable for high groundwater level areas

Engineering Bulk Packaging Standard

Medium & Small Diameter Pipes: Steel strip bundled + plastic end caps, prevent pipe end deformation and sediment entering during transportation and burial

Large Diameter Pipes: Wooden bracket isolation + waterproof and anti-collision wrapping, protect anti-corrosion layer from damage

Engineering Unified Marking: Clearly print specifications, material grade, engineering standard and batch number on the pipe body, convenient for on-site construction classification and project acceptance

8. Manufacturer Engineering Strength

Professional ERW pipe production base focusing on municipal and highway infrastructure engineering, with mature buried pipeline production technology

Rich experience in supporting national highway and municipal road drainage projects, familiar with highway engineering acceptance standards at home and abroad

Special anti-corrosion production line for buried pipelines, targeted process customization for different geological environments

Stable bulk supply capacity, support large-scale highway infrastructure project orders and short-period construction requirements

Provide one-stop services including engineering scheme matching, anti-corrosion customization, inspection report provision and on-site technical guidance

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