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  • Comparison of Steel Portal Frames

Comparison of Steel Portal Frames
Types of Steel Portal Frames & Their Differences
Steel portal frames are categorized based on shape, connection type, and structural behavior. Below are the main types and their key differences:
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Types of Steel Portal Frames & Their Differences

Steel portal frames are categorized based on shape, connection type, and structural behavior. Below are the main types and their key differences:

1. By Shape/Configuration

TypeDescriptionAdvantagesDisadvantagesApplications
Single-Span Portal FrameTwo columns + one rafter (A-shape).Simple design, cost-effective.Limited span (≤40m).Small warehouses, workshops.
Multi-Span Portal FrameMultiple spans with internal columns.Economical for large footprints.Internal columns reduce space flexibility.Factories, logistics centers.
Tapered Portal FrameColumns/rafters vary in depth (thinner at ends).Material efficiency, lighter weight.Complex fabrication.Medium-span industrial buildings.
Cantilever Portal FrameExtended rafters beyond columns.Extra covered space without supports.Higher foundation costs.Aircraft hangars, loading bays.
Curved Portal FrameArched rafters for aesthetics/strength.Better snow/wind resistance.Expensive fabrication.Churches, sports halls.

2. By Connection Type

TypeDescriptionAdvantagesDisadvantages
Rigid (Moment-Resisting) FrameWelded/bolted rigid joints.No bracing needed, clear spans.Higher connection costs.
Pinned (Hinged) FramePinned base/connections.Simple foundations, thermal flexibility.Requires bracing for stability.
Semi-Rigid FramePartial moment resistance.Balance of economy/stability.Complex design calculations.

3. By Structural System

TypeDescriptionKey Feature
Clear-Span FrameNo internal columns.Maximum usable space.
Propped FrameIntermediate supports (e.g., mezzanines).Reduces rafter depth.
Gable-End FrameVertical end walls for doors/windows.Improved aesthetics/functionality.

Key Differences Summary

  1. Span Capacity:

    • Single-span: ≤40m

    • Multi-span: Unlimited (with internal columns)

    • Tapered: Optimized for 30–60m

  2. Connection Rigidity:

    • Rigid frames resist bending (no bracing).

    • Pinned frames need bracing but allow thermal expansion.

  3. Cost vs. Performance:

    • Tapered frames save steel but cost more to fabricate.

    • Pinned frames are cheaper but less stable in high winds.

  4. Aesthetics:

    • Curved frames for architectural appeal.

    • Gable-end frames for traditional looks.

Which to Choose?

  • Budget-Conscious? → Single-span pinned frame.

  • Long-Span Needs? → Tapered rigid frame.

  • Aesthetic Priority? → Curved or gable-end frame.


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FAQ

Q: How can I get a quote for my project?

A: You can contact me anytime, via WeChat, WhatsApp, Email, or phone. I will get back to you as soon as possible.
jack@xingyasteel.com
+86 17305413116
+86 17305413116

Q: How long can I get the price?

A: If possible, please provide project CAD drawings, pictures or specific requirements. We usually quote within 6 hours. If you want to get a quote as soon as possible, please let us know via WeChat, WhatsApp or email so that we can prioritize your inquiry.

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A: Of course, our professional R&D team can design and produce the products you need according to your specifications and drawings. For example: special size, special control, OEM, etc.

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A: Normally, we ship from Tianjin Port, Qingdao Port and Shanghai Port. Of course, we can also accept the port you specify.

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A: According to the characteristics of the product and the mode of transportation, fix it in the most appropriate and stable way to ensure that there will be no bumps, corrosion, scratches and other problems during transportation.

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A: We have extensive export experience. Tell us what you need and we will take care of the rest! We will help you choose the most appropriate shipping service to get your products to where they need to be safely and accurately.

Q: Can you provide on-site installation service?

A: We can provide installation guidance service according to customer requirements. Construction drawings, installation drawings and videos will be sent to customers to help on-site installation. If necessary, our engineers will go to the site to guide the installation.

Q: How long is the delivery time?

A: It depends on the order quantity. Generally, the delivery time is about 10-20 days.

Q: What is your payment terms?

A: Payment ≤1000USD, 100% in advance. Payment ≥1000USD, 40% T/T in advance, the balance to be paid before shipment.

Q: How can I place an order if my trial order does not reach your MOQ?

Q: How can I place an order if my trial order does not reach your MOQ?
A: If your trial order is a small order, we can also provide the goods, we can communicate anything.

Q: How do you control product quality?

A:
1. Design quality: Consider possible problems in advance and provide high-quality design solutions.
2. Raw material quality: Select qualified raw materials
3. Production quality: Precision manufacturing process, experienced workers, strict quality inspection.

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