Three-Ply Formwork Panel

TECHNICAL PARAMETERS
Species ：Pine or spruce, by supply model
Construction ：Three cross-laid solid-wood plies
Width ：500 mm reference
Lengths ：1000 / 1500 / 1970 / 2000 / 2500 / 3000 mm
Thickness ：21 / 27 mm
Face ：Water-resistant or UV coating, by model
Bond ：Phenolic system per supplier literature
Edges ：Waterresistant edge coating
Use ：Castinplace formwork and platforms
Inspection ：Straightness, edges and moisture
Lay-up ：check Species, three plies, splits and bond
Packing ：Flat pallet, corner protection and batch ID

what is Three-Ply Formwork Panel?

A Three-Ply Formwork Panel (often called a 3-ply shuttering panel or yellow construction board) is a heavy-duty, engineered wooden panel designed specifically for concrete construction and formwork systems.
It serves as the temporary or semi-permanent mold (formwork) into which wet concrete is poured and allowed to set for walls, slabs, columns, and foundations.

How It's Made
 Three-Layer Construction: As the name implies, it consists of precisely three solid wood layers (typically made from durable softwoods like spruce, fir, or pine).
 Cross-Laminated Grain: The outer surface layers run in one direction, while the core (middle) layer runs perpendicularly (cross-wise). This grain arrangement maximizes structural stability and minimizes warping.
 Weatherproof Bonding: The layers are bonded together under high heat and pressure using waterproof glues-most commonly MUF (Melamine-Urea-Formaldehyde) or phenolic resins-to ensure it can withstand wet conditions.
 Coating and Edge Sealing: The surfaces are typically coated with a durable melamine resin or waterproof paint (most famously bright yellow), and the edges are sealed to prevent moisture penetration.

Common Uses
 Concrete Slab and Wall Formwork: Used extensively alongside H20 timber beams and steel props in building construction.
 Bridge and Tunnel Infrastructure: Utilized in heavy civil engineering projects that demand high load-bearing structural support during concrete curing.
Key Advantages
 High Load-Bearing Capacity: Strong and rigid enough to hold the immense hydraulic pressure exerted by wet concrete.
 Reusability: Built for the rugged demands of construction sites, allowing them to be stripped, cleaned, and reused across multiple building cycles.
 Smooth Concrete Finishes: The resin-coated surface ensures a clean, flat finish on the cured concrete, minimizing the need for intensive post-pour surface patching.
 Dimensional Stability: Resists swelling, shrinking, and cracking better than standard timber planks when exposed to weather and moisture cycles.

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