The 25 x 25mm square tube is a slim, precise profile that excels as a horizontal infill baluster in square-tube balustrade systems. Its compact equal-sided geometry creates a tight, graphic pattern when multiple runs are used between posts, delivering a refined, design-conscious result that feels intentional and considered rather than purely functional.
This tube is commonly used alongside the 40 x 40mm square top rail to create a consistent square-tube language throughout a balustrade design, and is equally at home as a decorative infill on staircases, deck railings, and balcony balustrades. Its lighter visual weight allows more runs between posts without the heaviness of larger profiles, making it a popular choice where an open feel is important.
Specifications
- Profile: Square
- Dimensions: 25 x 25mm
- Length: 5.8m per piece
- Wall Thickness: 1.2mm
- Finish Options: Brushed Satin | Mirror Polish
- Grade Options: 304 Stainless Steel | 316 Marine Grade Stainless Steel
- Material: Stainless Steel
- Category: Stainless Steel Tubing – Square
Which Grade Should I Choose?
Grade 304 is strong and reliable, suited to internal applications and external use in non-coastal, non-corrosive environments — ideal for inland areas such as Johannesburg, Pretoria, and most non-coastal suburbs.
Grade 316 (Marine Grade) offers superior corrosion resistance and is the essential choice for coastal properties, poolside installations, and any environment exposed to salt air, moisture, or chemicals. If you are in Cape Town, the Winelands, Durban, or any coastal area, Grade 316 is strongly recommended.
Tube Rolling & Fabrication
Our tube rolling service is available in-store at our Cape Town workshop. We can roll tubing to your required radius — ideal for curved handrails, sweeping deck railings, and architectural features. Round and slotted round tubing roll cleanly in most configurations. Square, rectangular, and slotted square or rectangular profiles can also be rolled, however these shapes are more complex and results will depend on the specific radius and application required — our team will advise you before proceeding. Contact us or submit a DIY Guidance request to discuss your project.
Not Sure What You Need?
Submit a free DIY Guidance request and one of our experts will review your project and confirm the exact products and quantities to order before you spend a single rand.
| Grade & Finish | 304 – Brush, 304 – Mirror, 316 – Mirror |
|---|---|
| Type | No Weld |
| Size | 25 x 25mm |
| Length | 5.8m |
| Material | Stainless Steel |
| Shape | Square |
| Thickness | 1.2mm |
