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Modular Steel Floor Frame System for Mezzanine and Multi-Level Buildings

The Modular Steel Floor Frame System is an engineered structural solution for creating additional floors, mezzanines and elevated working areas in industrial, commercial and prefabricated buildings.
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The system combines main girders, secondary beams, floor joists, edge members, bracing and connection components into a stable load-bearing structure. Each component is fabricated in the factory according to approved drawings and marked for efficient assembly at the project site.

Compared with conventional on-site construction, prefabricated steel floor framing offers greater design flexibility, faster installation and easier future modification. It is suitable for both new buildings and the expansion of existing facilities.

System Configurations

Steel Mezzanine Floor Frame

Designed to increase usable floor space inside warehouses, workshops and production facilities without significantly expanding the building footprint.

Composite Floor Framing

Steel beams are combined with profiled metal decking and reinforced concrete to form a strong and efficient composite floor system.

Industrial Equipment Platform

Engineered to support machinery, tanks, conveyor systems, maintenance areas and other industrial equipment.

Multi-Storey Steel Floor System

Suitable for offices, commercial buildings, production facilities and other multi-level steel structures requiring flexible column layouts.

Steel Floor Frame System (8)

Product Advantages

Modular and Efficient Installation

Components are prefabricated, drilled and identified before shipment, helping reduce field fabrication and improve installation efficiency.

Customized Load Capacity

The beam arrangement and member sizes can be engineered according to equipment loads, storage loads, pedestrian loads and other project-specific requirements.

Flexible Column Layout

The framing system can be optimized around production lines, storage racks, machinery and existing building conditions.

Reduced Structural Dead Load

An optimized steel framing system can reduce overall building weight compared with some conventional floor solutions, subject to the final structural design.

Easy Integration with Building Services

Openings and reserved spaces can be designed for electrical cables, ventilation ducts, pipelines, fire-protection systems and other building services.

Expandable and Adaptable

The structure can be designed to support future extensions, layout adjustments or additional functional areas.

Multiple Flooring Options

The frame can be combined with concrete slabs, metal decking, steel plates, cement boards or other engineered floor materials.

Main Structural Components

  • Primary steel girders

  • Secondary steel beams

  • Steel floor joists

  • Edge beams and headers

  • Steel columns and base plates

  • Horizontal bracing

  • Stiffeners and connection plates

  • High-strength bolts and anchors

  • Profiled metal decking, optional

  • Stairs, guardrails and handrails, optional

Steel Floor Frame System (5)

Technical Specifications

Specification Available Options
Product Type Mezzanine, equipment platform, composite floor or multi-storey floor frame
Steel Grade Q235B, Q355B or equivalent material
Main Structure Hot-rolled or welded H-section steel
Secondary Members I-beam, H-beam, channel or cold-formed sections
Floor System Metal deck with concrete, steel plate, cement board or customized flooring
Design Load Determined according to project use and structural calculations
Beam Span Customized according to layout and load requirements
Connection Method Bolted, welded or combined connections
Surface Protection Shop primer, finish painting or hot-dip galvanizing
Fire Protection Fire-resistant coating available upon request
Fabrication Service Cutting, drilling, welding, assembly and surface treatment
Packing Method Export-standard bundled or containerized packing
Design Basis Agreed project specifications and applicable local building requirements

Steel Floor Frame System (5)

Manufacturing Process

  1. Review project drawings and load requirements

  2. Develop the structural layout and connection details

  3. Prepare fabrication drawings and material lists

  4. Cut, drill and assemble steel components

  5. Complete welding and dimensional inspection

  6. Apply the specified surface treatment

  7. Mark components according to installation drawings

  8. Pack and load for international shipment

Quality Control

Quality inspections are performed throughout the fabrication process, including:

  • Raw-material certificate verification

  • Steel section and plate dimension checks

  • Hole-position and connection-detail inspection

  • Weld appearance and size inspection

  • Component straightness and assembly checks

  • Paint thickness or galvanizing inspection

  • Final quantity and marking verification

Information Needed for a Quotation

To prepare a suitable solution, please send us:

  • Architectural or structural drawings

  • Required floor dimensions and elevation

  • Design load and intended application

  • Column-grid and clear-height requirements

  • Preferred flooring material

  • Steel grade or project specification

  • Surface-treatment requirements

  • Project location and applicable design code

  • Required quantity

  • Expected delivery date

FAQ

Can this system be installed inside an existing warehouse?

Yes. A customized mezzanine structure can be designed according to the existing column layout, foundation conditions, available height and required floor load.

Is the floor frame supplied as a complete installation kit?

We can supply the steel beams, columns, bracing, connection plates, bolts, metal decking, stairs and guardrails according to the agreed project scope.

How is the required load capacity determined?

The load capacity is calculated according to the intended use, equipment weight, storage arrangement, floor material, beam span and applicable design requirements.

Can openings be added for stairs, conveyors or equipment?

Yes. Stair openings, service penetrations, equipment openings and conveyor passages can be incorporated into the structural design.

Which surface treatment should I choose?

Painted steel is commonly used in indoor environments. Hot-dip galvanizing may be selected for humid, outdoor or more corrosive conditions.

Can the structure be dismantled or expanded later?

Bolted modular systems can be designed for easier disassembly, relocation or future expansion, depending on the original engineering plan.


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