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BWP and marine plywood
Marine plywood is the highest grade of plywood: every ply is a selected hardwood, bonded with phenol-formaldehyde resin and treated against fungus and borers. It is made to IS 710 and passes the 72-hour boiling water test. BWP plywood to IS 303 uses the same resin with a wider choice of core species.
Specifications
| Standard | IS 710 marine, or IS 303 BWP grade, ISI-marked |
|---|---|
| Bonding | Phenol-formaldehyde (PF) resin, boiling waterproof |
| Core | Selected hardwood veneers, no gaps or overlaps (IS 710); rubberwood or hardwood (IS 303 BWP) |
| Faces | Gurjan or equivalent hardwood |
| Preservative | Treated against fungus and borers |
| Thickness | 6, 9, 12, 15, 18 and 25 mm |
| Boil test | Glue line passes 72 hours in boiling water |
| Moisture content | 5–15% at dispatch |
Sheet sizes
| Size | In feet | Availability |
|---|---|---|
| 2440 × 1220 mm | 8 × 4 ft | Standard; most stock |
| 2135 × 1220 mm | 7 × 4 ft | Common for furniture |
| 1830 × 1220 mm | 6 × 4 ft | Furniture, packing |
| 2440 × 915 mm | 8 × 3 ft | On order |
| 2135 × 915 mm | 7 × 3 ft | On order |
| 1830 × 915 mm | 6 × 3 ft | On order |
Thickness and truckload
| Thickness | Sheets per 22 ft truck, approx. | Square feet |
|---|---|---|
| 6 mm | 1,950 | 62,400 |
| 9 mm | 1,300 | 41,600 |
| 12 mm | 980 | 31,360 |
| 18 mm | 650 | 20,800 |
| 25 mm | 470 | 15,040 |
Counts are for 8 × 4 ft sheets of one thickness; a 32 ft multi-axle truck carries about double. Mixed loads are planned to the truck's weight limit.
Questions buyers ask
What is the difference between BWP and marine?
Both use waterproof phenolic resin. Marine (IS 710) also specifies the wood species, a gap-free core and preservative treatment, so it is stronger and more consistent.
Does marine plywood need paint?
For exterior use, yes. Seal all edges and coat with an exterior primer and paint or varnish.
Need a full or mixed truckload?
Send grade, thickness, quantity and delivery town. We reply with an ex-works quote, valid for 3 days.