Hebei Huayang Steel Pipe Co., Ltd is one of the most experienced manufacturers and suppliers of 76mm to 660mm erw pipe municipal road underground cable casing pipe in China. Welcome to buy discount 76mm to 660mm erw pipe municipal road underground cable casing pipe made in China here from our factory. Quality products and low price are available.
Product introduction
1. Product Overview
76mm-660mm ERW Municipal Road Underground Cable Casing Pipe is a professional steel conduit specially developed for urban municipal power grid reconstruction, road underground wiring, and public infrastructure cable protection projects. Different from ordinary fluid delivery steel pipes, this ERW high-frequency welded pipe is optimized with high structural rigidity, external pressure resistance and stable overall performance, dedicated to burying and protecting power cables, communication cables and optical fibers under municipal roads, sidewalks and urban green belts.
Manufactured via advanced high-frequency electric resistance welding process with standardized steel grade configuration and precision forming technology, the pipe features uniform pipe body, no deformation, strong compression resistance and excellent durability. It effectively isolates external soil pressure, vehicle rolling load, construction impact and soil corrosion, avoiding cable damage, short circuit and aging failure. Covering a full outer diameter range of 76mm to 660mm with customizable wall thickness and length, it fully meets the layered wiring and large-diameter cable penetration requirements of municipal road underground power and communication projects, being the preferred protective conduit for urban underground pipe network upgrading.
Core Municipal Engineering Application Scenarios
Urban municipal road underground power cable protection piping
City grid reconstruction and underground cable burying engineering
Road lighting, traffic signal line protective casing projects
Urban community, park and green belt buried wiring conduit
Highway and municipal auxiliary communication cable protection pipeline
Commercial district underground integrated pipe gallery cable casing
Old urban area cable renovation and overhead-to-underground wiring projects
Public infrastructure power and communication line protection engineering
2. Production Process & Municipal Engineering Advantages
This municipal cable casing ERW pipe adopts rigorous municipal engineering production standards, focusing on anti-pressure, anti-deformation and long-term buried stability, solving common problems of ordinary conduits such as insufficient rigidity, easy collapse and short service life after long-term road burial:
High-strength structural carbon steel coil raw material screening (strict control of hardness and toughness for buried load-bearing)
Precision continuous rolling forming to ensure uniform pipe wall and perfect roundness
HFW high-frequency full fusion welding, smooth inner and outer weld without bulge or gap
Online weld stress relief heat treatment to enhance overall structural stability
100% full-length ultrasonic weld non-destructive testing to eliminate weld defects
Fixed-length cutting, pipe end deburring and flat finishing for smooth cable threading
Buried anti-rust and anti-corrosion surface treatment for underground long-term service
Strict external pressure resistance and load-bearing sampling test + standard export packaging
Unique Strengths for Municipal Underground Cable Protection
Superior Road Load-Bearing & Anti-Deformation: High structural rigidity resists long-term vehicle rolling pressure and soil extrusion under municipal roads, no pipe collapse, flattening or distortion, effectively protecting internal cables from mechanical damage.
Smooth Inner Wall & Easy Cable Threading: Flat inner weld and smooth pipe wall greatly reduce friction during cable penetration, avoiding cable scratching and insulation damage, improving construction efficiency of municipal wiring projects.
Excellent Buried Anti-Corrosion Performance: Matched with professional underground anti-rust oil or coating treatment, it resists soil acid-base corrosion, groundwater erosion and microbial aging, ensuring long-term stable operation of underground pipelines.
High Safety for Power Wiring: Integral seamless welded pipe body avoids water and soil infiltration, prevents cable damp, short circuit and leakage risks, improves the overall safety and stability of urban power grid system.
Strong Project Adaptability: Support open-cut burial and non-trench jacking construction, suitable for complex urban road foundation and municipal construction conditions, adaptable to various urban underground pipe network layout.
Cost-Effective Municipal Solution: Higher strength and longer service life than plastic conduits, lower engineering cost than seamless pipes, ideal for large-scale municipal road cable renovation and new construction projects.
3. Complete Technical Specification Parameters
|
Item |
Municipal Cable Casing Parameters |
|
Outer Diameter Range |
76mm – 660mm (NPS3 ~ NPS24, full size for municipal cable grading) |
|
Wall Thickness Range |
2.5mm – 16mm (thickened wall for underground load-bearing, customizable) |
|
Standard Length |
6m, 12m (municipal engineering standard); customizable fixed cutting length |
|
Applicable Standards |
GB/T 3091, ASTM A53, EN 10217, ISO 3183 (municipal infrastructure pipeline standards) |
|
Steel Grades |
Q235B, S235JR, ASTM A53 Gr.B (high rigidity structural steel for buried casing) |
|
Main Functions |
Underground power cable / optical fiber / communication line protection, anti-pressure, anti-corrosion, anti-collision |
|
Buried Load Capacity |
Suitable for road surface vehicle load and deep soil burial pressure |
|
Pipe End Treatment |
Plain flat ends, deburred & chamfered (prevent cable scratching during threading) |
|
Surface Treatment |
Black anti-rust oil, asphalt anti-corrosion coating, primer painting (underground buried dedicated) |
|
Size Tolerance |
OD ±0.75%, Wall thickness ±8%, Length ±50mm (strict municipal engineering tolerance) |
4. Core Municipal-Grade Performance
4.1 Heavy Pressure Resistance & Structural Stability
Adopts high-toughness carbon steel material and integral rolling welding process, with strong overall structural rigidity. It can withstand long-term static soil pressure and dynamic vehicle rolling load after road burial, no pipe body deformation, sinking or cracking, fully adapting to harsh underground municipal working conditions.
4.2 Smooth & Cable-Friendly Inner Structure
The inner weld bead is finely leveled with no burrs or sharp protrusions. The ultra-smooth inner wall greatly reduces friction coefficient, ensuring fast and damage-free cable threading during municipal construction. It avoids insulation layer scratching and cable damage, effectively improving the safety of power and communication lines.
4.3 Long-Term Buried Anti-Aging Performance
Professional underground anti-rust and anti-corrosion treatment effectively resists soil chemical corrosion, groundwater soaking and underground humid aging. The pipe body maintains stable mechanical performance for a long time after burial, with service life up to 30+ years, reducing frequent maintenance and reconstruction of municipal cable pipelines.
4.4 Excellent Sealing & Isolation Performance
Integral welded pipe body has no gaps, which can effectively isolate external rainwater, soil, sediment and foreign matter. It prevents internal cable dampness, oxidation and short circuit faults, providing a closed and safe protective channel for urban underground power and communication lines.
4.5 Efficient Municipal Construction Compatibility
Standard pipe size and flat pipe ends support on-site cutting, docking and laying. It is compatible with municipal pipe gallery layout, open-cut burial and non-trench jacking construction methods, greatly improving the progress of urban road cable laying and grid renovation projects, and reducing road construction closure time.
5. Strict Municipal Engineering Quality Inspection
All cable casing pipes are inspected in strict accordance with municipal infrastructure project acceptance standards to ensure full compliance with urban underground pipe network construction specifications:
Raw material mechanical performance test (rigidity and toughness detection for buried load-bearing)
Pipe body compression resistance and external pressure load-bearing test
Weld bending, flattening and impact resistance test
100% full-length ultrasonic weld non-destructive flaw detection
Underground anti-corrosion coating adhesion and durability test
Full dimensional tolerance inspection and surface defect screening
Cable threading smoothness simulation test
SGS/BV/TUV third-party municipal engineering inspection & report issuance
6. Export Packaging & Municipal Project Logistics
Small & Medium Diameter (76-219mm): Standard hexagonal steel belt bundling, plastic end caps protection, waterproof kraft paper wrapping, anti-collision and moisture-proof, suitable for long-distance transportation and municipal site storage.
Large Diameter (273-660mm): Single pipe independent protection, container bulk loading, soft spacer separation to prevent pipe body deformation and end damage during transportation.
Municipal Standard Marking: Each bundle is marked with municipal engineering standard, specification, steel grade and batch number, convenient for project acceptance, bidding filing and construction traceability.
Global Project Logistics: Support sea, railway and truck transportation, stable supply for municipal road cable protection projects in Southeast Asia, Middle East, Africa and other global urban infrastructure projects.
7. Authoritative Qualification Certifications
ISO 9001 Quality Management System Certification
ISO 14001 Environmental Management System Certification
CE Infrastructure Pipeline Certification
Municipal Engineering Special Pipeline Production Qualification
SGS / BV / TUV Third-Party Project Inspection Reports
Complete export customs clearance and engineering acceptance documents
About us
Hebei Huayang Steel Pipe Co., Ltd. was founded in 2005, with a registered capital of 500 million yuan. The company covers an area of more than 1,000 mu, with annual sales of 10 billion yuan, more than 600 employees and an annual productivity of 2.75 million tons. The company has 17 new automatic steel pipe production lines and 14 high-frequency production lines, with a diameter of 73-660 mm; Three double-sided submerged arc welded steel pipe production lines with diameters of 406.4-1422.4mm;; 24 hot tube expanding production lines, with a diameter of 230-820mm; Two anticorrosion steel pipe production lines with a diameter of 73-1626 mm; 2 automatic painting production lines. With 3 branches and 5 offices, the products are sold to various cities and exported to more than 80 countries such as Southeast Asia, Middle East, Europe and America.
Packaging, transportation and delivery
Packaging, transportation and delivery
At Hebei Huayang Steel Pipe Co., Ltd., we apply standardized and reliable packaging solutions for all our steel pipe products. Our pipes can be securely packed by hexagonal bundling or circular bundling according to product diameter, wall thickness and customer requirements. Each pipe end is protected with high‑strength plastic pipe caps to avoid collision damage, dust and moisture during transportation and storage. The whole bundle is firmly wrapped with durable woven bags to enhance stability and prevent scratches or deformation.
We support a complete range of transportation methods to satisfy global customers, including road transportation, railway transportation, sea freight and container shipping. Based on our strategic location in Cangzhou, Hebei Province, we enjoy convenient access to major ports such as Tianjin Port, which greatly improves logistics efficiency and reduces transportation costs.
For standard specifications and normal order quantities, the general delivery time is about 30 days after order confirmation and deposit receipt. For large‑scale orders, special sizes or customized processing requirements, our production and sales team will formulate a detailed production plan and provide an accurate delivery schedule accordingly to ensure on‑time supply and stable performance for projects and clients worldwide.
Strict quality control
1. During and after the production, experienced quality inspectors randomly check the products to ensure that each steel pipe is qualified for production and application.
2. A nationally recognized laboratory with CNAS certification and certification by French Classification Society.
3. Have CNOOC access certificate, KOC oil company access network, ADNOC Abu Dhabi oil company access network, Petrobras access network, etc.
4. Accept the inspection by the third party designated/paid by the buyer, such as SGS and BV.
Certifications
API 2B
API 5L
GOST
ISO 9001
EN 10219
EN 10210
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