Portal Frame & Truss Fabrication

Portal frames and trusses are the primary structural systems for industrial buildings, warehouses, and agricultural sheds. At Qingdao Tianhua Yihe Metal Fabrication (qdthyhmetalfab.com), we fabricate complete portal frame and truss components - including columns, rafters, haunches, purlin cleats, and bracing - all manufactured to your structural drawings. Our welding procedures are qualified to AS/NZS 1554.1, and all fabricated components are ready for site bolting and erection.

Core Specifications

Components: Columns, rafters, haunches, apex connections, eaves brackets

Material: Q235B, Q355B, AS/NZS 3678 Grade 300/350

Section: Welded H-section, tapered welded sections

Connection: Pre-drilled bolt holes for site assembly

Purlin cleats: Welded at specified spacing

Bracing: Flat bar, angle, or rod bracing fabricated to design

Coating: HDG to AS/NZS 4680, primer, or paint system

Standards: ISO 9001:2015, AS/NZS 3678, AS/NZS 1554.1

Products in This Category

Portal Frame Columns and Rafters

Tapered Welded Portal Frame Sections

Roof and Wall Trusses

Haunch Connections and Eaves Brackets

Bracing Components (flat bar, angle, rod)

Manufacturing Capabilities

Portal frame fabrication involves cutting tapered flange and web plates, welding built-up sections using SAW, welding haunch connections and purlin cleats, CNC drilling of all bolt holes, trial assembly of critical connections, and surface treatment. We can produce both standard portal frame configurations and custom designs for specialized buildings.

Quality Assurance

Trial assembly of apex and eaves connections for complex frames to verify fit-up before shipment

Bolt hole pattern verification against connection templates on 100% of components

Weld inspection per AS/NZS 1554.1 with NDT reports available on request

Material test certificates (MTC) provided with every shipment

ISO 9001:2015 certified quality management system

Frequently Asked Questions

Q: Do you provide trial assembly before shipping?

A: Yes, for complex portal frames we can pre-assemble critical connections (apex, eaves) in our factory to verify fit-up before shipping. This minimizes site installation issues.

Q: Can you fabricate to Australian structural drawings?

A: Yes, we routinely fabricate to Australian structural drawings. Our engineering team reviews all drawings and confirms any technical queries before production.

Q: What is the typical lead time for portal frames?

A: Standard portal frames: 4-6 weeks. Large or complex orders: 6-10 weeks. We provide a confirmed lead time with our quote.

Related Pages: Structural Steel Fabrication > H-Beam & I-Beam Fabrication | Steel Columns & Base Plates | Custom Drawing Manufacturing OEM | Home

Ready to Start Your Project?

Send your building drawings and frame layout — we'll confirm fabrication, trial assembly, and lead time within 2 hours.

Email: andywang@qdthyhmetalfab.com | WhatsApp: +86 138 6398 9651 | Tel: +86 138 6398 9651

Rest assured, we will get back to you within 2 hours.