In modern power cable production, the metallic sheath is critical for providing long-term radial moisture protection, mechanical strength, and chemical resistance — especially in underground, submarine, and high-voltage applications. The RLB Aluminum Sheath Corrugated Pipe Continuous Extrusion Line delivers a state-of-the-art seamless aluminum sheath solution that outperforms traditional welded aluminum processes by ensuring uniform wall thickness, zero weld defects, and superior concentricity.
Using high-purity aluminum rods (Φ9.5 mm or Φ12 mm per GB/T 3954), this Alüminyum Kılıflı Oluklu Boru Sürekli Ekstrüzyon Hattı produces corrugated aluminum tubes from Φ60–180 mm with wall thickness 1.5–5.0 mm, delivering excellent flexibility, lightweight construction, and reliable performance for low-voltage to extra-high-voltage cable cores.
Core Technology & Engineering Advantages
- Advanced Continuous Extrusion Process: Four aluminum rods undergo surface cleaning and are fed into the main extrusion unit featuring an upper-and-lower single-wheel double-groove structure. This Conform-type rotary extrusion technology ensures homogeneous material flow and high production efficiency without the weld seams common in traditional methods.
- In-Line Cable Core Integration: The cable core pays off at synchronized speed and passes through the extrusion die with a protective water-cooling jacket, preventing thermal damage while forming a loose-fitting aluminum sheath.
- Immediate Cooling & Corrugation: Post-extrusion water cooling protects the core; the tube then enters the corrugation unit to form precise helical or annular corrugations (pitch 10–50 mm, depth 2–8 mm) as required by standards or customer specifications.
- Robust Pay-Off & Take-Up: Large-capacity bobbins (up to 4500 mm) with gantry-type units ensure stable, high-speed operation and easy downstream handling.
- Akıllı Kontrol: Full-line synchronization via MMI + PLC for real-time monitoring, recipe storage, and minimal downtime.
Compared to welded aluminum sheaths, continuous extrusion provides more even metal distribution, eliminates weld-related defects, and offers superior corrosion resistance and mechanical flexibility — making it the preferred choice for demanding MV/HV/EHV cable applications.
Teknik Özellikler
| Model |
Inlet Al. Rod Dia. (mm) |
Extrusion Wheel Dia. (mm) |
OD of Al. Tube (mm) |
Thickness of Al. Tube (mm) |
Pitch of Corrugation (mm) |
Depth of Corrugation (mm) |
Pay-off / Take-up Bobbin (mm) |
| LBF420x2 |
9.5 ± 0.3 |
420 |
60–170 |
1.5–5.0 |
10–50 |
2–8 |
4500 / 4500 |
| LBF540x2 |
12 ± 0.3 |
540 |
60–180 |
1.5–5.0 |
10–50 |
2–8 |
4500 / 4500 |
Custom configurations for specific voltage classes or corrugation profiles are available upon request.
Primary Applications in Power Cable Industry
- Low-Voltage to Extra-High-Voltage Cables: Seamless aluminum sheath for MV, HV, and EHV cable cores
- Underground & Submarine Power Cables: Radial moisture barrier and mechanical protection
- Oil-Filled & Specialized Cables: Enhanced chemical and corrosion resistance
- Renewable Energy & Grid Infrastructure Projects: Lightweight, flexible sheathing for long-distance transmission
This Alüminyum Kılıflı Oluklu Boru Sürekli Ekstrüzyon Hattı is engineered for manufacturers seeking consistent, high-quality metallic sheathing that meets or exceeds IEC 60840, IEC 62067, and GB standards while reducing material waste and production costs.
Engineered for Reliability, Efficiency & Long-Term ROI
Üretici firma: RLB (Jiangsu Güvenilir Endüstri A.Ş., Ltd.) — a trusted name with decades of cable machinery expertise — every component of this line is built for 24/7 continuous operation. The seamless extrusion process delivers measurable benefits:
- Uniform aluminum distribution with no weld defects
- Superior flexibility and crush resistance from precise corrugation
- Lighter weight and lower cost compared to lead sheathing
- Higher production efficiency and reduced scrap rates
Whether you produce standard MV cables or premium EHV transmission lines, this Alüminyum Kılıflı Oluklu Boru Sürekli Ekstrüzyon Hattı provides the reliable quality, customized service, and long-term technical partnership modern cable producers demand.
Ready to upgrade your metallic sheathing capabilities with seamless aluminum technology? Şimdi bilgi isteyin for technical quotation, custom configuration, layout design, or factory visit. Our engineering team provides full turnkey solutions, installation support, operator training, and ongoing technical partnership.
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