What are the common cable material quality problems?

1. Copper rod: made of recycled waste copper, oxidized and discolored surface, insufficient tension, not round. 2. PVC plastic: more impurities, unqualified heat loss, porosity in extruded layer, plasticizing difficulties, wrong color, etc. 3. XLPE insulation: short scorch resistance, easy early cross-linking, etc. 4. Silane cross-linking material: poor extrusion temperature control, poor thermal expansion, rough surface. 5. Copper tape: uneven thickness, oxidation discoloration, insufficient tension, ruffled edge, insufficient softening, hardness, short ends, poor connection, paint or zinc layer off, etc. 6. steel wire: too large an outer diameter, zinc layer off, insufficient galvanization, too many short ends, insufficient tension, etc. 7. PP filler ropes: bad material, uneven diameter, poor connection, knocking, etc. 8. PE filler strips: hard, easy to break, different curvatures, etc. 9. non-woven fabrics: actual thickness of the goods is not correct, tension is not enough, the width is sometimes uneven. 10.PVC tape: thick, tension is not enough, more short head, uneven thickness, etc. 11.Fire-resistant mica tape: delamination, tension is not enough, hair sticky, tape roll wrinkles, etc. 12.Alkali-free rockwool rope: thick and thin, tension is not enough, joints are many, easy to fall off the powder, etc. 13.Glass tape: thick, meandering, low density of weave, mixing with organic fibers, easy to tear, etc. 14.Non-halogenated adhesive flame retardant tape: no Halogen-free adhesive flame-retardant tape: easy to break, tape wrinkles, drawing, poor flame retardancy, smoke, etc. 15. Heat-shrinkable sealing caps: inaccurate specifications, poor material memory, long burn time, poor strength, etc.

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