Heavy-duty Cardboard Tubes Make strong & hard heavy-duty cardboard tubes. They could be used for mailing, packaging, winding cores and protective cylinder covers etc. Thin- or thick-walled, short or long, the tubes can be tailored to your specific needs! Product Details of Heavy-duty Cardboard Tubes Diameter: 15-350 mm Wall thickness: 5-35 mm Structure: spiral wound Length: custom cut
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