LDPE Circular End Caps: Performance & Protection
Round end caps are compatible with a wide range of materials, including PVC pipes, metal rods, and corrosion-resistant chemical pipes. This adaptability stems from a flexible customization system: Based on the outer and inner diameters of the pipe/rod and the port structure, we can customize the end cap to the corresponding size, ensuring a tight fit with a gap of ≤0.5mm. This effectively prevents protection failures caused by dimensional deviations. Compatible diameters cover mainstream specifications from 10mm to 500mm.
Core Material (LDPE) Performance Parameters
The circular end caps are made of low-density polyethylene (LDPE), which provides three key performance attributes:
Durability: Impact strength ≥ 2.5 kJ/m², abrasion rate ≤ 0.005 g/cm², capable of withstanding typical transport shocks and bumps, maintaining structural stability within a temperature range of -30°C to 79.4°C without cracking or deformation.
Lightweight: Density ranges from 0.91 to 0.925 g/cm³, reducing weight by 60% to 70% compared to similar metal end caps, reducing installation and handling costs.
Environmental friendliness: The material is 100% recyclable and complies with the environmental requirements of GB/T 19277.1-2011, "Plastics - Thermoplastics - Extruded Sheets (Definitions, Marking and Measurement) - Part 1: General Rules," with a recyclability rate exceeding 95%.
Easy Installation Technical Advantages
Due to its lightweight material properties and optimized structural design, the installation and removal efficiency of circular end caps is significantly improved: installation time per person is ≤ 15 seconds, and removal time is ≤ 10 seconds, a 3-4 times improvement over traditional threaded metal end caps. The end caps utilize a snap-on or interference fit design, requiring no additional tools for securement. This reduces manual labor and improves efficiency in large-scale warehousing scenarios.
Environmental Performance and Sustainability
Recycling Process: Discarded end caps can be recycled through processes such as crushing, cleaning, and granulation. The recycled material retains over 85% of the mechanical properties of the original material and can be reused to produce similar end caps or other LDPE products.
Environmental Impact: No toxic or hazardous substances are emitted during the production process, and no residual pollution remains in the natural environment after disposal. Compliant with EU RoHS 2.0 environmental standards, these products help companies achieve green production goals and reduce their carbon footprint.
Transport Protection Performance Indicators
During transportation, the circular end caps provide comprehensive protection through the following features:
Sealing Protection: The end caps and ports utilize a sealed design with a dustproof rating of IP65 and a waterproof rating of IPX4, effectively blocking the intrusion of dust, rain, and moisture, with a moisture permeability of ≤0.1g/(m²/24h);
Impact Protection: In a simulated transportation bump test (frequency 5-50Hz, amplitude 2mm, duration 4h), pipe/rod ports equipped with end caps showed no deformation or damage, achieving a 100% product integrity rate;
Corrosion Protection: When protecting metal rods, the end caps can reduce the rust rate to less than 0.1%, a reduction of over 95% compared to unprotected ports.
Storage Protection Function Description
During storage, round end caps address the core issues of stacking and long-term storage:
Stacking Support: The top of the end cap can withstand a static pressure of ≥500N. When stacking height is ≤3m, the ends of the lower pipes/bars remain free of deformation, thus optimizing storage space.
Long-term Protection: After six months of storage at a temperature of 25°C and a relative humidity of 60%, pipes/bars with end caps installed exhibit no dust contamination, moisture corrosion, or changes in product performance.
High-Temperature Performance Parameters
The round end caps have a maximum temperature tolerance of 79.4°C (175°F). After 24 hours of continuous operation at this temperature, the end caps exhibit a thermal deformation rate of ≤2%, with no degradation in sealing performance. They exhibit no brittle cracking at temperatures as low as -30°C, maintaining excellent elasticity and conformability. They can withstand extreme environments such as high-temperature transportation (such as train compartments in summer) and storage in hot areas, ensuring stable protection performance.
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