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Modular Steel Frame Plywood Formwork

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This modular steel-framed plywood form adopts integrated steel frame structures matched with moisture-resistant phenolic plywood to solve the deformation and heavy weight drawbacks of single-type construction molds.
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Product Introduction

Core Specifications

Core Advantages

Comparison of Three Formworks

Scope of Application

Modular steel frame plywood formwork is a composite formwork material designed for standardized cast-in-place concrete construction, developed based on modular design concepts. Its frame is integrally welded from Q235 cold-rolled steel plate or hot-dip galvanized steel sheet, fitted with thickened waterproof phenol multi-layer plywood manufactured via high-temperature hot pressing as panel surface.

This formwork combines the dual practical merits of steel frames and wooden panels. The metal frame boasts outstanding rigidity, strong compression resistance and excellent impact durability; the lightweight wooden panel can be cut, polished and perforated freely on construction sites, delivering smooth and delicate concrete finish after casting. Panels fit tightly with zero slurry leakage during pouring, and the whole set features easy disassembly and assembly operable by a single worker.

Widely applied to cast-in-place construction projects including high-rise residential buildings, commercial office towers, municipal bridges, underground comprehensive pipe galleries and industrial workshops, it addresses three major construction pain points simultaneously: improving construction quality, shortening construction schedules and cutting material loss. It has become a preferred replacement formwork material for modern green standardized construction sites.

·Standard Sizes: 1220×2440mm, 1000×2000mm, 900×1800mm. Custom non-standard, curved and special-shaped panels are available per construction drawings.

·Frame Material: Q235 cold-rolled steel plate / hot-dip galvanized steel with full anti-rust coating, high impact & compression resistance, free of deformation under concrete pouring pressure.

·Panel Material & Thickness: 15–18mm waterproof phenol-bonded multi-layer hardwood plywood, produced by high-pressure lamination process. It features superior moisture and corrosion resistance, free of delamination, peeling or cracking after repeated cycles.

·Frame Depth Options: 63mm and 75mm. Deepened frames enhance overall structural strength and ensure seamless panel splicing.

·Weight Per Square Meter: 16–22kg, easy for single worker transport and assembly without heavy lifting equipment such as tower cranes or forklifts.

·Matching Fasteners: Special connecting pins, splicing locks and reinforced clamps, compatible with most mainstream support systems on the market, easy to install and stable after fixation.

·Service Life: The plywood panel can be reused for 30–50 times, while the steel frame can be recycled permanently without severe wear. Its overall durability far outperforms traditional solid wood formwork.

·Applicable Cast Structures: Shear walls, load-bearing columns, beams & slabs, culverts, underground pipe tunnels and bridge piers, delivering smooth concrete surface to meet fair-faced concrete standards.

Integrated Steel-wood Composite Structure, Flawless Casting Finish

The thickened steel frame is equipped with internal reinforcing ribs, offering remarkable load capacity and strong resistance against lateral concrete pressure. It effectively offsets expansion force during pouring, fundamentally eliminating common construction troubles like form bulging, deformation and slurry leakage at joints. Walls, beams and columns feature neat edges and flat surfaces, drastically reducing labor costs for later grinding and repairing.

High Reusability Reduces Long-term Material Procurement Costs

The plywood surface resists abrasion and erosion from concrete slurry, while the steel frame withstands falls and impacts without damage. Its overall service life is 3 to 5 times longer than ordinary wood formwork. For large-scale long-term construction projects, frequent repurchases of new formwork can be avoided, greatly lowering total material expenditure.

Lightweight Design Accelerates On-site Crew Efficiency

Over 40% lighter than all-steel formwork, it allows individual workers to carry, assemble, cut and perforate panels on site. Formwork erection and removal are simple operations, shortening the overall construction cycle of each building and saving massive labor hours.

Weatherproof Raw Materials Adaptable to Complex Outdoor & Underground Sites

Adopting high-temperature waterproof pressing technology with phenolic glue, the panel resists rot, delamination, peeling and cracking even under long-term open-air storage or humid underground environments such as pipe galleries and tunnels. Stable performance is guaranteed for formwork installation in rainy weather.

Fair-faced Concrete Effect Eliminates Secondary Plastering Procedure

The dense and smooth panel surface creates uniform, glossy concrete after demolding, directly complying with fair-faced wall construction codes. Additional mortar plastering for leveling is unnecessary, cutting both plaster raw material costs and construction labor expenses.

Standardized Modular Panels Support Customization for Special-shaped Works

Uniform modular design enables compatibility with most mainstream building support and reinforcement accessories in the industry. Curved, cylindrical and special-shaped formwork can be customized in factory to fit irregular beams, columns, equipment foundations, culverts and other non-standard construction structures.

Performance	Steel Frame Wood Formwork	All-Steel Formwork	Traditional Wood Formwork
Weight	Moderate (easy handling)	Heavy (needs machinery)	Light
Rigidity / Deformation	High, deformation-proof	Highest	Easy deformation, leakage
Reuse Cycles	30–50 times	50–100 times	5–10 times
Efficiency	Fast (easy erection)	Slow (bulky)	Average
Concrete Finish	Excellent clear water	Good	Poor (pitting)
Total Cost	Lowest (best value)	High (expensive)	High (high consumption)

• Building Construction Projects: High-rise residential compounds, commercial office buildings, underground civil air defense garages, shear wall structures, load-bearing columns, cast-in-place floor slabs and indoor stair casting.

• Municipal Infrastructure Projects: bridges, tunnels, pipe galleries, culverts, retaining walls, water conservancy, municipal worksRiver-crossing bridges, urban underpass tunnels, underground comprehensive pipe galleries, pedestrian culverts, retaining slope walls and small & medium water conservancy structures.

• Industrial Construction Projects:Standard production workshops, warehousing & logistics warehouses, independent heavy-duty equipment foundations and cast-in-place components matched with prefabricated buildings.