Process and characteristics.
– Manufacturing process: high-frequency welding + hot-dip galvanization of the inner and outer surfaces; the zinc coating thickness is ≥ 65 μm.
– Advantages: Excellent corrosion resistance, high strength, impact resistance, flame retardancy, good grounding, and ease of installation.
– Limitations: Thin-walled, non-pressure-resistant water transport; primarily used for cable routing/structural support.
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