How to Choose RHS and SHS Steel for Construction Projects

For construction professionals, builders, architects, and engineers in Melbourne, selecting the right materials is crucial for project success. Brimbank Steel proudly offers high-quality RHS and SHS steel in Melbourne, supplying contractors and project managers with reliable steel supplies in Melbourne to suit diverse construction needs. Understanding the differences between RHS (rectangular hollow section) and SHS (square hollow section) steel, as well as their advantages and applications, can help you make informed decisions that improve both structural integrity and project aesthetics. This article explores everything you need to know about choosing RHS and SHS steel for construction projects, ensuring your outcomes meet durability, safety, and quality standards.
Understanding RHS and SHS Steel: Differences and Applications

RHS and SHS steel are widely used hollow structural sections valued for their strength and versatility. While they share some similarities, their shapes give each distinct advantages depending on project requirements.
- RHS Steel (Rectangular Hollow Section): As the name suggests, RHS steel features a rectangular hollow cross-section with flat surfaces and sharp corners. This shape offers excellent bending resistance and load-bearing capacity along its length, making it well-suited for beams, columns, and frames in commercial and residential buildings.
- SHS Steel (Square Hollow Section): SHS steel has a square cross-section, with equal side lengths and uniform wall thickness. Its symmetrical shape provides equal strength distribution in all directions, making it ideal for load-bearing structures requiring aesthetic uniformity, like façade elements, walkway supports, or decorative frameworks.
Typical Applications of RHS and SHS Steel
RHS Steel
- Structural beams and columns
- Trusses and frames
- Support columns in carports and verandas
- Gate and fence frames
SHS Steel
- Architectural features and decorative columns
- Bollards and guardrails
- Frameworks requiring consistent load support in multiple directions
- Furniture and handrails
Both RHS and SHS steel sections are integral to modern construction projects across Melbourne thanks to their flexibility and efficiency.
Benefits of Using RHS and SHS Steel in Construction
Choosing RHS and SHS steel provides numerous advantages that contribute to long-lasting, safe, and visually pleasing structures.
- Strength and Durability: Both have excellent strength-to-weight ratios, allowing considerable load-bearing capacity without excessive weight. Their hollow design increases rigidity while reducing material use, providing economical structural solutions.
- Versatility: Available in various sizes and thicknesses, RHS and SHS steel can be customised to fit a wide range of applications — from heavy-duty support beams to slim decorative features.
- Aesthetic Appeal: The clean lines and smooth surfaces of RHS and SHS steel blend well with contemporary architectural designs. Their distinct geometric shapes add modern visual interest.
- Corrosion Resistance and Longevity: When properly coated or galvanised, these steel sections resist environmental damage, making them suitable for both interior and exterior use.
- Ease of Fabrication: Cutting, welding, and drilling RHS and SHS steel is straightforward, providing flexibility during installation and allowing precise customisation.
Brimbank Steel stocks an extensive range of RHS and SHS steel in Melbourne to meet these diverse project demands efficiently.
How Brimbank Steel Supports Your Needs
Brimbank Steel understands the specific steel supplies in Melbourne that construction teams require for reliable project delivery.
- Extensive Inventory: A broad selection of sizes, grades, and finishes ensures availability for small- to large-scale projects.
- Quality Assurance: Brimbank Steel sources materials that meet Australian standards, ensuring structural reliability.
- Custom Cutting and Processing: To help streamline workflows, Brimbank Steel offers cutting and processing services tailored to project specifications.
- Responsive Service: Experienced staff support customers with technical insights and flexible supply options.
Our dedicated approach simplifies acquiring the right RHS and SHS steel in Melbourne for your project’s success. For more details, visit our Steel Products page.
Tips for Selecting the Right RHS and SHS Steel Size and Grade
Proper sizing and steel grade choice are fundamental for ensuring the structural requirements and safety objectives of your project.
Consider the Following
- Load-Bearing Requirements: Calculate anticipated loads and stresses to determine adequate section sizes and wall thickness. Larger or heavier loads generally require thicker or wider RHS/SHS profiles.
- Steel Grade: Different grades offer varying yield strengths. Structural steel grades like S275 or S355 cater to varied strength and flexibility needs. Higher grades may allow weight savings while maintaining strength.
- Project Type and Use: External frameworks exposed to weather require corrosion-resistant coatings or galvanisation, whereas internal supports may have less stringent requirements.
- Fabrication Needs: Choose sections that are easier to weld or cut depending on project complexity and equipment availability.
Working with knowledgeable steel suppliers like Brimbank Steel ensures you select the right size and grade that align with regulatory standards and engineering specifications.
Impact of Quality Steel Supplies on Project Durability and Safety
Using high-quality RHS and SHS steel directly affects construction durability, safety, and lifecycle costs.
- Increased Structural Integrity: Adhering to specified steel grades and quality reduces risks of structural failure under load or environmental conditions.
- Compliance With Building Codes: Certified steel materials support smooth regulatory inspections and approvals.
- Reduced Maintenance: Superior materials with protective coatings require fewer repairs or replacements over time.
- Enhanced Aesthetic Outcomes: Premium steel products maintain appearance and structural soundness longer, reflecting positively on project reputation.
Reliable steel supplies in Melbourne, such as those from Brimbank Steel, provide peace of mind for builders and designers aiming for safe, durable construction.
Contact Brimbank Steel for Your Next Project
Choosing the right RHS and SHS steel in Melbourne is critical to your construction project’s success, whether for structural support, architectural appeal, or operational efficiency. Brimbank Steel offers a comprehensive inventory of quality steel supplies in Melbourne, combined with expert support to help you select sizes and grades tailored to your project needs. For dependable RHS and SHS steel supply and personalised assistance, contact Brimbank Steel today. Equip your project with premium materials from local specialists committed to helping Melbourne’s construction industry build stronger, safer structures.


