Compared with traditional reinforced concrete structures, steel primary frames offer a lighter self-weight, faster installation, flexible span design, and easier expansion. They are especially suitable for projects that require large internal spaces and efficient construction.

We manufacture each frame according to project-specific drawings and engineering requirements. Dimensions, steel grades, section sizes, connection details, surface finishes, and component configurations can all be customized.

Structural System

A complete Primary Steel Frame may include:

• Main steel columns

• Roof rafters

• Ridge beams

• Tapered H-section members

• Welded H-beams

• Column base plates

• End plates

• Stiffener plates

• Splice plates

• High-strength bolt assemblies

Product Highlights

Optimized for Large Clear Spans

Steel frames can create wide internal spaces with fewer intermediate columns, making them ideal for production lines, material storage, logistics operations, and equipment installation.

Project-Specific Engineering

Every project can be customized according to building dimensions, wind load, snow load, crane requirements, roof configuration, and other structural conditions.

Precision Fabrication

Steel components are processed using controlled cutting, welding, drilling, and assembly procedures to achieve accurate dimensions and reliable fit-up.

Efficient Site Erection

Factory-prefabricated components reduce on-site processing. Clearly marked members and bolted connections help simplify installation and improve erection efficiency.

Strong Adaptability

The frame system can be used for single-span, multi-span, single-slope, double-slope, and other building configurations.

Multiple Corrosion Protection Options

Surface treatment can be selected according to the service environment, including primer coating, finish painting, zinc-rich coating, and hot-dip galvanizing.

Product Parameters

Production Workflow

The manufacturing process is organized to maintain stable product quality and dimensional consistency.

Raw Material Preparation → CNC Cutting → H-Beam Assembly → Welding → Straightening → Drilling → Connection Plate Welding → Dimensional Inspection → Surface Preparation → Coating → Final Inspection → Packing

Each component is checked before shipment to help reduce installation issues at the project site.

Welding and Fabrication Quality

Welding quality directly affects the structural performance of the main frame.

Our fabrication control includes:

• Weld appearance inspection

• Weld size verification

• Component straightness control

• Connection plate positioning

• Hole spacing inspection

• Member dimension checking

• Surface quality verification

Additional inspection requirements can be arranged according to project specifications.

Surface Finish Options

Primer Coating

A practical solution for general steel structure projects where further finishing may be completed at the destination.

Finish Painting

Available for projects requiring additional appearance and corrosion protection.

Hot-Dip Galvanizing

Suitable for humid, coastal, outdoor, or corrosive environments where stronger corrosion resistance is required.

Export and Installation Support

For overseas projects, we can provide:

• Component numbering

• Packing lists

• Export packaging

• Container loading support

• Installation drawings

• Technical coordination

• Shipping documentation support

• Remote installation guidance

Steel members can be labeled according to erection drawings to make site identification easier.

Advantages of Choosing Our Primary Steel Frame

• Custom-made according to project drawings

• Suitable for large-span structures

• Factory-controlled fabrication

• Reliable connection accuracy

• Flexible steel member configurations

• Multiple anti-corrosion options

• Efficient international shipping

• Technical support for overseas projects

FAQ

Can the Primary Steel Frame be designed for crane buildings?

Yes. The structural configuration can be customized for industrial buildings with overhead crane requirements, subject to project design conditions.

Can you supply the frame without wall and roof panels?

Yes. We can supply the main structural steel frame separately or combine it with secondary steel and enclosure systems.

Can the steel members be galvanized?

Yes. Hot-dip galvanizing can be provided for suitable components according to project requirements.

How are components identified during installation?

Steel members can be marked with unique component numbers corresponding to the erection drawings.