No. 4 L-shaped Crossarm is a specific-specification component widely used in overhead power or communication lines. The "No. 4" typically refers to its defined parameters like size, material grade, or load-bearing capacity (details may vary by industry standards). Structured in an L-shape and usually made of metal (e.g., angle iron) for durability, it mainly functions to support and secure conductors or related parts (such as insulators), maintaining proper conductor positioning and ensuring the stable operation of the overhead line system.
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