Specifications
Every length of structural steel we supply is backed by certified manufacturing, documented specifications, and full traceability. Here is what that looks like in practice.
Steel Grade
We supply structural steel to two internationally recognised grade designations:
Grade 350WA
AS/NZS 3678 (Australian Standard)
The Australian Standard designation for structural steel with a minimum yield strength of 355 MPa. The 'WA' suffix denotes weldability compliance. This is the grade specified by Australian structural engineers for commercial, industrial, and infrastructure applications requiring high-strength, weldable structural steel.
S355JR
EN 10025 (European Standard)
The European equivalent designation for the same grade of structural steel. S355 denotes a minimum yield strength of 355 MPa. JR indicates room-temperature Charpy impact testing compliance. Internationally recognised by engineers and procurement teams globally.
Why both designations matter
Our steel meets both specifications simultaneously, manufactured to S355JR under ISO-certified quality management, and compliant with the equivalent Australian Grade 350WA requirements. When your structural engineer specifies Grade 350WA, we supply steel that meets that specification with full documentation.
Technical properties
Product Form
We supply structural steel in solid I-beam (Universal Beam and Universal Column) sections, the standard form specified for commercial and industrial structural applications. I-beam sections provide superior strength-to-weight ratio compared to hollow sections (RHS/SHS) for primary structural members including columns and rafters.
Why I-beam matters
Many budget shed and structural kit suppliers use RHS (Rectangular Hollow Section) or C-section steel for columns and rafters. Solid I-beam sections provide significantly greater structural capacity for the same member size, allowing longer spans, greater load capacity, and more efficient structural design. When we say solid I-beam, we mean exactly that.
Manufacturing and Certification
Our fabrication partner operates under ISO accreditation, a certified quality management system that governs every aspect of the manufacturing process.
What ISO accreditation means for your order
Documentation supplied with every order
Australian Materials
Roof sheeting, purlins, and structural sheet materials are supplied by Lysaght and BlueScope, Australian-made products manufactured to consistent standards and trusted across the Australian construction industry.
Lysaght products we supply
Engineering
Our structural steel supply is backed by Australian engineering expertise. We work with Australian structural engineers who understand AS/NZS Standards, Australian wind regions, and the specific requirements of construction in Australian conditions.
Wind regions (AS/NZS 1170.2)
Our team can confirm specifications, documentation requirements, and availability for your project.