Product Specification

12-Strand Dynema Rope 100% UHMWPE Fiber Cord Marine Mooring Line for Yachting for Piston Part

1.PHOTOS

2. Main performance

3.Technology Comparison

Coil length: 220m

Spliced strength:± 10% lower

Weight and length tolerance:± 5%

MBL=Minimum Breaking Load conform ISO 2307

Other sizes available upon request

4.Parameter Table

Production Process

Step 1: UHMWPE Fiber Extrusion & Drawing

Step 2: Fiber Spooling & Strand Formation

Step 3: 12-Strand Braiding/Stranding

Step 4: Surface Treatment & Coating (Optional)

• UV Stabilization Coating: A thin, clear polymer coating is applied to resist UV degradation, critical for ropes exposed to prolonged sunlight on yacht decks or marine docks.
• Abrasion-Resistant Coating: For piston part applications (where the rope may contact metal surfaces), a wear-resistant coating (e.g., polyurethane) is added to minimize friction damage and extend service life.
• Water-Repellent Treatment: A hydrophobic finish is applied to reduce water absorption, preventing weight gain and ensuring the rope remains lightweight in marine settings.

Step 5: Quality Testing & Cutting

• Tensile Strength Test: Samples are pulled to breaking point to verify load-bearing capacity, ensuring compliance with marine and industrial requirements.
• Abrasion Test: The rope is rubbed against rough surfaces (simulating dock edges or metal piston components) to assess wear resistance.
• Dimensional Check: Diameter, length, and strand uniformity are measured to ensure consistency.
• UV Resistance Test: Samples are exposed to accelerated UV radiation to confirm long-term outdoor durability.
  Once approved, the rope is cut into custom lengths (e.g., 50m for mooring lines, shorter lengths for piston parts) and spooled or packaged for distribution.

2. Application Scope

A. Marine Mooring Lines

• Small to Large Vessels: Used as mooring lines for yachts, sailboats, powerboats, and even small commercial vessels (e.g., fishing boats). Its high tensile strength secures vessels to docks, piers, or buoys, while UHMWPE’s low stretch ensures minimal rope elongation under the pull of tides, winds, or vessel movement—preventing the boat from drifting.
• Harbor & Marina Use: Ideal for permanent or temporary mooring in harbors and marinas. Its UV resistance withstands constant sunlight, and water repellency avoids rot or mildew, even in saltwater environments. The 12-strand structure also resists abrasion from dock edges or metal cleats, extending service life.

B. Yachting-Specific Applications

• Dock Lines & Spring Lines: Serves as dock lines (to secure the yacht to the dock) and spring lines (to control fore-aft movement) during docking. Its flexibility allows easy tying of secure knots (e.g., cleat hitch), while its strength handles the dynamic forces of waves or wind gusts.
• Towing Lines for Small Watercraft: Used to tow dinghies, jet skis, or inflatable toys behind yachts. The rope’s lightweight nature (compared to traditional marine ropes) reduces handling effort, and its abrasion resistance withstands contact with water or inflatable materials.
• Emergency Lines: Functions as emergency mooring lines or tow ropes for yachts in unexpected situations (e.g., engine failure). Its high strength ensures reliability, and low stretch prevents sudden jolts that could damage the yacht or towed equipment.

C. Piston Part Applications (Industrial/Mechanical)

• Piston Component Tensioning: Used in mechanical systems to tension or secure piston-related parts (e.g., piston rings, connecting rod components) during assembly or maintenance. Its high tensile strength and low stretch ensure precise, stable tension—critical for preventing component misalignment in engines (e.g., small marine engines, industrial piston pumps).
• Piston Actuation Auxiliary Lines: In some specialized piston systems (e.g., lightweight hydraulic pistons), the rope acts as an auxiliary line to guide piston movement or absorb minor shock loads. Its abrasion resistance protects against wear from metal piston surfaces, and UHMWPE’s chemical resistance ensures compatibility with lubricants or coolants used in engine systems.
• Piston Maintenance Tools: Integrated into maintenance tools for piston disassembly/assembly (e.g., as a lifting line to carefully lower piston heads into engine blocks). Its flexibility allows maneuvering in tight engine spaces, while its strength supports the weight of small to medium piston components without stretching or breaking.