How a plywood cable drum is constructed
A wooden cable drum has three main components:
- Flanges — the two round side discs. Built up from multiple layers of commercial plywood (typically BWR, IS 303) bonded and cut to the required diameter. Plywood flanges are lighter and more consistent than sawn-timber flanges.
- Barrel (drum body) — the cylinder the cable winds onto. Usually built from hardwood or rubberwood staves, or a combination of plywood and solid wood, depending on diameter and cable weight.
- Cheeks / internal supports — cross-members that brace the flanges and carry the barrel spindle. Solid hardwood.
The result is a drum that carries the cable load, survives the reeling and unreeling cycle, and protects the cable in transit and storage.
Plywood grade for cable drum flanges
| Flange grade | Standard | When to specify |
|---|---|---|
| BWR | IS 303 | Standard — most cable drum applications, covered storage and export transit |
| BWP / Marine | IS 710 | Drums stored outdoors, very humid or wet environments, offshore cable |
Flange thickness depends on drum diameter and cable weight — typically 18–25 mm for medium to large drums; lighter drums may use 12–16 mm. We confirm all thickness and layup specifications at quotation.
ISPM-15 and cable drums
For export, the solid-wood barrel, staves and internal supports must be heat-treated and ISPM-15 stamped. The plywood flanges are generally exempt from ISPM-15 (because the plywood manufacturing process eliminates pests). We supply finished drums already ISPM-15 compliant. See ISPM-15 for plywood packaging for the full exemption rules.
Specifying a cable drum
To quote accurately we need:
- Flange diameter (outer diameter of the drum disc)
- Barrel width (distance between flanges — determines how much cable fits)
- Take-up capacity (cable weight / length) or the cable specification
- Flange thickness if already specified, or we recommend based on load
- Destination port and whether ISPM-15 is required
- Quantity
We build to your bill of materials and can match a drawing or an existing drum spec. See plywood cable drums for the full product page.
Cable types commonly wound on plywood drums
Power transmission cable, telecom and optical fibre cable, submarine cable, armoured control cable, and wire rope are all wound on wooden drums for export. The drum specification — diameter, flange strength, spindle bore — varies by cable weight and winding tension. We work from your BoM or the cable manufacturer's drum spec.