7x0.33 Zinc Coated Steel Wire Strand , 7 Strand Fiber Optic Cable For Stretch Telecommunications

Product Introduction

The 7x0.33 galvanized steel stranded wire for optical cables is a special reinforcement component made by twisting 7 B-grade galvanized steel wires with a diameter of 0.33mm or above in a 1×7 structure. The finished product has a diameter of approximately 0.71mm and a theoretical breaking force of about 1.2kN. This product features tension performance that matches the mechanical properties of optical fibers, excellent lateral pressure protection ability, and temperature stability.

It meets the YD/T 393-2014 industry standard and serves as the core reinforcement component for various communication optical cables such as ADSS and OPGW. It can be adapted to various laying scenarios including pipelines, overhead, and direct burial.

Product Advantages

• Tension Matching The tensile modulus of elasticity is highly matched with the mechanical properties of the optical fiber cable, effectively sharing the axial tension of the cable during installation and use.
• Anti Lateral Pressure Protection The circular cross-section structure can evenly disperse external impact and provide reliable mechanical protection for internal optical fibers.
• Temperature Stability The coefficient of linear expansion of galvanized steel strands is similar to that of optical fiber materials, reducing stress concentration in optical cables caused by temperature changes.
• Installation Compatibility Good flexibility can adapt to various installation methods such as pipelines, overhead, and direct burial, meeting the construction needs of different scenarios.

Applications

Applicable type: Center reinforced core of ordinary overhead optical cable Core function: As the central support structure of optical cables in small-scale communication networks such as residential communities and campuses, it can withstand the tension of short distance overhead and resist common damages such as rodent bites and external impacts, ensuring the transmission stability of fiber optic cables entering households.

Certifications

Our steel wire rope meets international production standards and has obtained multiple certifications such as SGS, CE, ISO, etc.

Technical Data — Diameter, Weight & Breaking Load

Values are typical mill data. Request the full mill test certificate for your exact specification.