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Integrated power pipeline spiral steel pipe is a spiral welded steel pipe designed specifically for power engineering. It is manufactured using strip steel coil spiral forming and submerged arc welding technology, and has high strength, corrosion resistance, compression resistance, and insulation protection characteristics. It is suitable for cable protection, underground transmission lines, and other scenarios, and can meet the requirements of power system integration and safety.
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Definition and core characteristics of spiral steel pipes for integrated power pipelines
Integrated power pipeline spiral steel pipe is a spiral welded steel pipe designed specifically for power engineering. It is manufactured using strip steel coil spiral forming and submerged arc welding technology, and has high strength, corrosion resistance, compression resistance, and insulation protection characteristics. It is suitable for cable protection, underground transmission lines, and other scenarios, and can meet the requirements of power system integration and safety. Its core function is to enhance the stability and protection level of power transmission through structural optimization and material upgrading.
Core features and technological advantages
1. Material and structural design
Raw material selection: Low carbon steel or low-alloy steel such as Q235B and Q345B are used, and the strip steel is pre treated with leveling and edge cutting to ensure mechanical properties and processing accuracy.
Forming process: Continuous forming is carried out through a spiral coiling machine, and both inner and outer double-sided submerged arc welding (such as automatic double wire welding technology) is used to ensure the strength of the weld seam, with the weld seam gap controlled within 1-3mm.
Insulation and Protection: Surface coated with epoxy resin or polyethylene coating to enhance insulation performance, avoid current leakage and soil corrosion.
2. Anti corrosion and compressive performance
Multi layer anti-corrosion technology: For underground humid environments, 3PE (epoxy powder+adhesive+polyethylene) or epoxy coal tar anti-corrosion technology is used, with a soil corrosion resistance time of more than 30 years.
High pressure bearing capacity: Spiral welds disperse stress, with a 30% increase in pressure bearing capacity compared to straight seam pipes, and can withstand underground soil pressure and mechanical impact.
3. Advantages of integrated applications
Modular design: supports parallel laying of multiple cables, with a compartmentalized structure to reduce electromagnetic interference.
Construction convenience: Flexible laying reduces on-site welding joints and increases installation efficiency by 40%.
Application scenarios and typical cases
Underground cable tunnel
Used for urban power grid renovation, such as DN1200 spiral steel pipe integrated laying of 10kV-220kV cables, with a single tube capable of accommodating 4-6 cables.
High voltage transmission lines
The mountainous transmission project adopts thick walled spiral steel pipes (wall thickness ≥ 12mm) to adapt to complex terrain and high load conditions.
New energy power facilities
The grounding system of the photovoltaic power station adopts galvanized spiral steel pipes, which are resistant to salt spray corrosion and have a grounding resistance of ≤ 4 Ω.
ADD：Chengnan Industrial Development Zone, Yanshan County, Hebei Province
Domestic phone number：0086-317-6689999
International call：0086-317-6165555
E-mail:9905791@qq.com
