ASTM A572 High-Strength Steel Truss for Heavy Industrial Workshops – Factory Pre-Assembled

Our ASTM A572 High-Strength Steel Truss is purpose-engineered for heavy industrial workshops requiring exceptional load capacity, wide column-free spans, and rapid on-site erection. Manufactured from ASTM A572 Grade 50 high-strength low-alloy structural steel – delivering a minimum yield strength of 345 MPa (50 ksi) – this truss achieves an excellent strength-to-weight ratio, enabling lighter sections and reduced steel consumption. Every truss is 100% factory pre-assembled, with all components cut, drilled, welded, and trial-fitted in our workshop before shipment. Designed to AISC 360 and fabricated to AWS D1.1, this truss offers full compliance with American standards.

Material – ASTM A572 Grade 50

ASTM A572 Grade 50 is a high-strength low-alloy structural steel offering a minimum yield strength of 345 MPa (50 ksi) and tensile strength of 450 MPa (65 ksi) – 38% higher than conventional ASTM A36. This enables greater load capacity with reduced section sizes, directly lowering steel tonnage and foundation costs. The material also provides excellent weldability and fracture resistance, making it ideal for demanding industrial applications. Full Mill Test Certificates (MTCs) with heat number traceability are provided with every order.

Factory Pre-Assembly – Precision Before Shipment

Every truss is fully assembled at 1:1 scale in our workshop before any component is packed. This allows us to verify all dimensions, confirm hole alignments, and ensure perfect fit before disassembly. After trial assembly, every member is clearly marked with an erection tag matching the assembly drawings – enabling your site crew to erect the structure quickly using simple bolted connections with no on-site cutting or welding.

Structural Efficiency – The Triangular Advantage

The triangular lattice configuration delivers superior structural efficiency:

• • Axial force transfer – members carry only tension or compression, maximising material efficiency
  • Column-free interiors – spans without intermediate columns, creating open floor space

• • Superior stability – inherent resistance to buckling and lateral-torsional deformation

• • Weight reduction – minimises steel consumption by up to 20–30% compared to solid-web beams

Available configurations: Warren, Pratt, Howe, or custom lattice.

Customisation – Built for Your Project

We engineer each truss to your specific requirements:

• • Span length – customised to your column spacing (typical 15–60+ metres)

• • Roof slope – single pitch, double pitch, or flat

• • Member sections – H-beams, channels, angles, or tubes

• • Connection details – bolted or shop-welded

• • Load capacity – dead, live, snow, wind, and seismic (AISC 341 available)

• • Surface treatment – shop primer or hot-dip galvanized

Our engineering team uses Tekla Structures and STAAD Pro for 3D modelling and detailed shop drawing production.

Quality Assurance

We maintain a rigorous quality system:
• Design Standard: AISC 360
• Seismic Design: AISC 341 (available)
• Welding Standard: AWS D1.1 with qualified welders and approved WPS/PQR
• Fabrication Tolerances: Length ±2mm, straightness ≤L/1000, hole centre ±1.5mm
• NDT Inspection: UT on butt welds, MT on surface defects as required
• Material Traceability: Full MTCs with heat numbers
• Third-Party Inspection: SGS, BV, TÜV welcome at any stage

Specifications (Customisable)

Why Choose Our ASTM A572 Steel Truss?

• • Higher strength with less steel – reduced material costs and lighter foundations

• • Factory pre-assembly – eliminates on-site cutting and welding, slashing installation time

• • Full compliance with AISC 360 & AWS D1.1 – American-standard quality

• • Custom-engineered to your dimensions – every project, every requirement met

• • Complete documentation – MTCs, NDT reports, and as-built drawings

We are Hangzhou FAMOUS Steel Engineering Co., Ltd. (FASECbuilding), a steel structure manufacturer specialising in ASTM-grade trusses for heavy industrial workshops worldwide. Our 50,000m² facility, in-house engineering team, and ISO 9001-certified quality system ensure reliable delivery and consistent quality for projects of all scales.

We look forward to being your trusted partner for your next industrial workshop project – let's build something great together!