Composite Steel Plates For Engineering Construction

Construction Process of Composite Steel Plates for Building Engineering

Pre-construction Preparation

①Check the specifications and material of the plates, and re-inspect the surface for delamination, scratches, and rust.

②Clean the base surface, level and remove rust, ensuring the base surface is firm and flat.

③Equip the necessary welding, cutting, sealing, and hoisting equipment and protective materials.

Cutting and Processing

①Use plasma or abrasive wheel cutting; direct cutting of the composite layer with gas cutting is prohibited.

②Grind the cut edges smooth, removing burrs and sharp corners to avoid damage to the composite layer.

③Drill holes and trim edges according to the layout dimensions, leaving space for installation expansion joints.

Hoisting and Positioning

①Use specialized hoisting equipment to avoid scratching the plate surface with wire ropes.

②Align the plates according to the layout lines, and temporarily fix, level, and straighten them.

③Control the flatness of the plate surface and the joint gaps to meet design standards.

Splicing and Welding

①Weld in layers, first welding the base carbon steel, then treating the composite layer interface.

②Select matching special welding wire. Strictly control welding temperature to prevent interlayer delamination. Ensure full welds free of porosity and cracks; clean weld slag after welding.

Joint Sealing Treatment

Fill joints with sealing strips and weather-resistant sealant. Apply waterproof and corrosion-resistant edge sealing to exposed joints to prevent water seepage and corrosion.

Fixing and Installation

Secure with bolts, pressure strips, and hangers; treat fasteners with anti-corrosion treatment. Tighten in layers for even stress distribution to prevent panel deformation and warping. Reserve temperature expansion joints for large panel sections.

Surface Protection and Finishing

Remove stains and weld marks from the panel surface; repair minor damage. Cover and protect finished products to prevent scratches and bumps from overlapping construction. Self-inspect flatness, sealing, and firmness; accept and hand over the project.

Key Construction Precautions

Strictly prohibit heavy impacts and rolling on the composite panel surface to prevent interlayer separation. Ensure corrosion protection throughout construction in corrosive areas. Avoid high-temperature welding that could burn the surface material.

Core performance advantages of composite steel plates for engineering construction

1.Complementary Performance： The strength of carbon steel combined with the corrosion resistance of stainless steel overcomes the shortcomings of single-material composites. For example, stainless steel-carbon steel composite panels are 30%–50% cheaper than pure stainless steel, while offering comparable corrosion resistance.

2.High Strength and Durability： High interfacial bonding strength (≥210MPa), preventing delamination; the stainless steel cladding is resistant to salt spray and aging, allowing for 50 years of maintenance-free use of building exterior walls.

3.Multifunctional Integration： Metal + insulation layer composite panels complete structure, insulation, and waterproofing in one step, reducing processes by 30% and lowering the risk of leakage.

4.Lightweight： Aluminum-stainless steel composite panels are 40%+ lighter than pure stainless steel, reducing building load and making them suitable for renovations and high-rise curtain walls.

Composite steel plates are a cost-effective choice for construction projects. With carbon steel as the body and alloy as the coating, they achieve a balance between strength, durability, energy saving, aesthetics and cost, making them a key material for green buildings and industrialized construction.

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