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EN39 S235GT 4mm Scaffolding Tube (Hot-Dipped Galvanized)
The EN39 S235GT 4mm Scaffolding Tube is the critical structural component for safe and reliable scaffolding construction systems worldwide. Manufactured in strict accordance with the EN39 and BS1139 standards, these steel tubes are designed specifically to provide unyielding support for high-rise building maintenance, heavy formwork, and shoring systems.
As a leading manufacturer and exporter in China, we utilize premium S235GT steel grade to ensure exceptional structural reliability. Each scaffold tube undergoes a rigorous hot-dip galvanizing process, providing a robust, uniform zinc coating on both the inside and outside surfaces. This guarantees maximum resistance to corrosion and rust, extending the service life of your scaffolding system in the most demanding outdoor environments.
Technical Specifications
| Technical Category | Specification Details |
| Product Name | Scaffold Tube / Scaffolding Pipe |
| Standard Compliance | EN39:2001, BS1139 |
| Material Grade | S235GT (Compliant with EN39) |
| Outer Diameter (OD) | 48.3mm |
| Wall Thickness | 4.0mm (3.2mm also available) |
| OD Tolerance | ±0.5mm |
| Thickness Tolerance | -10% |
| Surface Treatment | Hot-Dipped Galvanized |
| Zinc Coating Thickness | ≥ 40 Microns |
| Testing & Inspection | Flattening Test, Bending Test, Tensile Test, Chemical Analysis |
Key Advantages
Product Applications
Scaffolding Construction: The primary vertical and horizontal framework component for erecting temporary access platforms on high-rise building projects.
Shoring & Formwork Systems: High-strength support for heavy concrete slabs, bridge construction, and architectural formwork.
Industrial Maintenance: Reliable staging and access platforms for oil refineries, chemical plants, and shipyard maintenance.
Temporary Structures: Frameworks for event staging, grandstands, and heavy-duty outdoor safety barriers.
Packaging & Delivery
Frequently Asked Questions (FAQ)
Q: What is the difference between S235GT and standard Q235 steel for scaffolding?
A: S235GT is a specific European steel grade formulated for EN39 scaffolding tubes. It mandates stricter controls on chemical composition and mechanical performance—specifically requiring proper deoxidation—ensuring higher structural safety and bending performance compared to general-purpose Q235 steel.
Q: Are the tubes galvanized on the inside as well?
A: Yes, our scaffolding tubes are fully hot-dip galvanized. They are completely immersed in molten zinc, ensuring a highly protective zinc coating (≥40 microns) on both the interior and exterior surfaces.
Q: How do you ensure the tubes fit perfectly with scaffolding couplers?
A: We strictly control the Outer Diameter (OD) to 48.3mm with an exacting tolerance of ±0.5mm, as required by the EN39 standard. This guarantees a safe, slip-free grip when used with standard drop-forged or pressed scaffolding couplers.
Q: Can you provide 3rd party testing for government or large engineering projects?
A: Absolutely. We regularly work with SGS, BV, and other independent inspection agencies to verify our EN39 compliance, S235GT material grade, and zinc coating thickness before shipment.
Inventory
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