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ET-UHMWPE-DB-BLK Series
The Double Braided UHMWPE / Polyester Traction Rope with Black Tracer is engineered to eliminate the safety hazards and inefficiencies of traditional wire ropes in power grid expansion, live-line crossing, and underground cable laying.
Ultra-High Tensile Load-Bearing Core (100% Virgin UHMWPE):
The 12-strand braided inner core is manufactured from premium continuous-filament UHMWPE fibers. It provides extreme tensile breaking strength (up to 15× higher strength-to-weight ratio than carbon steel) and minimal elongation (<1.5% at working load limit), preventing conductor sagging, whipping, and violent elastic recoil during high-load pulling.
Heavy-Duty Protective Jacket (High-Tenacity Polyester):
The tight 24/32-carrier braided polyester cover encapsulates the UHMWPE core, offering superior resistance against capstan friction heat, sheave wheel wear, sharp abrasive terrains, and long-term solar UV radiation. Polyester’s exceptional dimensional stability ensures consistent drum spooling without sheath slippage.
Integrated High-Contrast Black Anti-Twist Marker Thread:
Unlike painted or surface-printed marks that wear off under heavy abrasion, the black tracer thread is permanently woven into the jacket pattern. The deep black fiber stands out vividly against the light-colored rope surface in full daylight, harsh outdoor glare, and low-light environments, making rope rotation, twists, and uneven strand tension instantly visible before kinks or structural damage can occur.
Parameter
| Type | Diameter | Unit | Breaking Strength ( Tons ) |
| UHMWPE | Φ4mm | M | 0.7 |
| Φ6mm | M | 1.8 | |
| Φ8mm | M | 3.5 | |
| Φ10mm | M | 6 | |
| Φ12mm | M | 9 | |
| Φ14mm | M | 13.5 | |
| Φ16mm | M | 16 | |
| Φ18mm | M | 20 | |
| Φ20mm | M | 31 |
| Specification Item | Standard Value / Details |
|---|---|
| Product Model | ET-UHMWPE-DB-BLK Series |
| Inner Core Material | 100% Virgin UHMWPE (Ultra-High Molecular Weight Polyethylene) |
| Outer Jacket Material | High-Tenacity Continuous Filament Polyester (PET) |
| Rope Structure | Double Braid (12-Strand Core + 24/32-Strand Tight Braided Jacket) |
| Marker Thread Feature | Continuous Black Tracer Thread (Anti-Twist & Distance Orientation) |
| Diameter Range | 6mm – 32mm+ (Custom engineering available) |
| Standard Lengths | 100m, 200m, 500m, 1000m, 2000m on wooden/steel reels |
| Breaking Strength (MBL) | 28 kN – 580 kN+ (depending on diameter) |
| Elongation at Break | < 3.0% (Near-zero stretch, controlled stringing) |
| Working Load Limit (WLL) | 20% of MBL (5:1 safety factor for pulling lines) |
| Specific Gravity / Density | ~1.18 – 1.25 g/cm³ (Stable trajectory in wind and terrain) |
| Dielectric & Insulation Properties | High synthetic dielectric resistance (Safe for live-line proximity) |
| UV & Weather Resistance | Superior (Polyester jacket absorbs UV radiation without core loss) |
| End Terminations | Soft Spliced Eyes, Stainless Steel Thimbles, Anti-Chafe Canvas/PU Sleeves, Pulling Socks |
Maximum Visual Twist Contrast (Black-on-White Tracer):
The black marker thread creates an unmistakable visual spiral on the jacket, allowing operators at tension machines and capstans to immediately identify line twists, prevent hockles, and maintain smooth line payout.
Superior Strength-to-Weight Ratio vs. Steel Wire:
Matches heavy steel cable pull capacity while reducing overall rigging weight by over 80%, substantially cutting transport costs and manual handling fatigue on remote tower sites.
Enhanced Capstan Heat & Friction Resistance:
The dense polyester jacket withstands high-speed surface friction and continuous bend-fatigue over pulleys without thermal melting or internal core degradation.
Torque-Balanced & Non-Rotating Geometry:
Counter-balanced double-braid construction naturally cancels rotational torque under peak tension, ensuring straight tracking through pulling blocks and rollers.
Non-Conductive Safety in Grid Operations:
Offers clean synthetic insulation compared to conductive steel cables, drastically reducing electrical flashover hazards during overhead line crossings and substation work.
Permanent Woven Durability:
The black tracer is an integral structural thread that will never peel, fade, wash out, or degrade under mud, oil, grease, or weather exposure.
Transmission & Distribution Line Stringing (高压/超高压输电线路张力放线):
Acts as high-capacity guide lines (导引绳) and pulling lines (牵引绳) across mountains, river spans, and highway crossings.
Substation & Underground Cable Pulling (变电站建设与地下电缆管道敷设):
Tough polyester cover glides smoothly through conduit bends with minimal friction and zero outer sheath damage.
Capstan Winch & Motorized Winching Systems (机动绞磨机与张力牵引机组):
Black tracer line helps machine operators monitor spooling alignment on the drum and avoid dangerous line overlap.
Live-Line Crossing & Power Grid Emergency Repair (带电跨越放线与电网应急抢修):
Lightweight handling allows rapid manual hauling and safe installation over energized grid sections.
Industrial Heavy Rigging & Cable Hauling (重型工业牵引与线缆铺设):
Ideal for marine power umbilical pulling, wind turbine tower cabling, and telecommunication OPGW installation.
Direct Rope Factory with 20+ Years Experience: Fully equipped with precision multi-carrier braiding machinery, automated tension heat-setting systems, and horizontal tensile test benches.
Certified Batch Testing & MTC Support: Every production reel is tested and traceable for breaking load, elongation, and linear density, with complete Mill Test Certificates provided.
End-to-End OEM/ODM Customization: Customizable tracer configurations (Single black thread, Dual cross-spiral black threads, Custom pitch intervals), custom spliced eyes, thimbles, and export-grade steel/plywood drum packaging.
Trusted Global Power Utility Supplier: Proven track record supplying power utilities, EPC transmission line contractors, and electrical equipment distributors across North America, Europe, Australia, Southeast Asia, and the Middle East.
