Carbon Steel Scaffolding Tube — Factory Direct Supplier | Huaxia-Steel
Huaxia-Steel supplies carbon steel scaffolding tube to construction contractors, scaffolding rental companies, shipyards, and oil and gas maintenance projects. Our tubes meet EN 39, BS 1139, and JIS G 3444 requirements, with hot-dip galvanized or black finishes, tight end squareness, and consistent mechanical properties. We also supply pressed and forged couplers, base jacks, and fittings to complete your scaffold system.
Product Overview
Scaffolding tube is a welded or seamless carbon steel tube used to build temporary access and working platforms. The most common size is 48.3 mm outside diameter with a 3.2 mm or 4.0 mm wall thickness. The tubes must be strong enough to carry workers, tools, and materials, yet light enough for manual handling. Galvanized coating extends service life in outdoor and marine environments.
Specifications
| Parameter | Range |
|---|---|
| Outside diameter | 48.3 mm standard; 42.4 mm and 60.3 mm available |
| Wall thickness | 2.0 mm, 2.5 mm, 3.0 mm, 3.2 mm, 4.0 mm |
| Length | 0.5 m – 6.5 m; cut to order |
| Standard | EN 39, BS 1139, JIS G 3444, AS/NZS 1163 |
| Material grade | S235JR, STK400, STK500, Q235, Q345 |
| Tensile strength | ≥300 MPa (typical S235JR / STK400) |
| Yield strength | ≥235 MPa |
| Surface | Hot-dip galvanized 80–500 g/m², black, painted |
Available Steel Grades
- S235JR / STK400: Standard structural grade for general scaffolding and access systems.
- STK500: Higher-strength grade for heavy-duty and high-load scaffold towers.
- Q235 / Q345: Chinese structural grades commonly used for domestic and export scaffolding tube.
Manufacturing Standards
Our scaffolding tubes are manufactured and tested to EN 39 (aluminium and steel scaffolding tube), BS 1139 (scaffolding couplers, tubes, and boards), JIS G 3444 (carbon steel tubes for general structural purposes), and AS/NZS 1163 (structural steel hollow sections) for Australian and New Zealand projects. We can supply test reports showing tensile, flattening, and coating weight results.
Applications
- Building construction scaffolding
- Shipyard and offshore platform access
- Industrial maintenance and turnaround work
- Event staging and temporary grandstands
- Tunnel and bridge repair access
- Power plant and refinery outages
Quality Assurance
Each batch is checked for outside diameter, wall thickness, straightness, end squareness, and coating thickness. Flattening and bend tests are performed according to the applicable standard. Couplers and fittings are tested for slip resistance and load capacity. MTCs are issued to EN 10204 3.1 and include chemical analysis, mechanical properties, and dimensional results.
Packing and Shipping
Scaffolding tubes are bundled in hexagonal or square packs with steel strapping, caps on ends, and plastic wrapping to protect the galvanized coating. Bundles are loaded with dunnage and lashings to prevent movement during sea transport. We provide bundle tags, packing lists, and loading photos for every shipment.
Need EN 39 or BS 1139 scaffolding tube with galvanized finish and matching couplers? Tell Huaxia-Steel the diameter, wall, length, and standard for a mill-direct quote.
