Tianjin Lefin Industrial Co., Ltd is one of the most experienced manufacturers and suppliers of en 39 scaffolding pipe in China. Please feel free to buy high quality en 39 scaffolding pipe from our factory. Good service and reasonable price are available.
EN 39 SCAFFOLDING PIPE is a special steel pipe for scaffolding in line with the European standard EN 39, which is mainly used for construction support systems in construction, petrochemical, shipbuilding and other fields.
core characteristics and standard requirements
1. Material and chemical composition
EN 39 scaffolding pipes are usually made of carbon steel, such as Q235B, and their chemical composition must meet the restrictions on carbon, manganese, sulfur, phosphorus and other elements in the EN 39 standard to ensure material strength and weldability.
2. Size specifications
• Common outer diameter: 48.3mm (conforming to nominal size requirements in EN 39)
• Wall thickness range: 3.2mm or 4mm (depending on load-bearing requirements)
• Length: Usually 6 meters standard tube, can also be customized.
3. Surface treatment
Hot dip galvanizing is required, and the thickness of the zinc layer is ≥85μm to improve corrosion resistance and adapt to open air or humid environment.
4. Mechanical properties
• Tensile strength: ≥340MPa
• Yield strength: ≥235MPa
• Elongation: ≥22% (to ensure plastic deformation capacity)
application Fields
1. Construction scaffolding system
It is used to build portal, bowl buckle or disc scaffold to provide structural support for high-altitude working platform.
2. Industrial equipment maintenance
In the field of petrochemical, electric power and other equipment maintenance, as a temporary support frame.
3. Special environment adaptation
The galvanized layer can withstand the coastal environment of high salt spray and industrial corrosive media, and extend the service life.
Production and quality control
1. Enforce standards
• Manufacturing standard: EN 39 (European standard for scaffold pipes)
• Supporting accessories standard: such as BS 1139 (British scaffolding fastener standard).
2. Test items
• Dimensional tolerance: Outer diameter ±0.5mm, wall thickness ±10%
• Adhesion of galvanized layer: verified by bending test
• Pressure test: Simulate the compression performance under actual load.
selection suggestions
1. Safety factor
Wall thickness is selected according to construction height and load, 4mm wall thickness is suitable for heavy scaffold system.
2. Environmental adaptation
Galvanized pipes are preferred in high humidity or corrosive environments.
3. Accessory compatibility
It must be paired with EN 39 standard fasteners (such as BS 1139) to ensure connection stability.
Our products
Standard: BS EN 10210,BS EN 10219,BS EN 10217,
ASTM A500,ASTM A501,ASTM A53,ASTM A253,
GB/T 3094,GB/T 6728,
JIS G3466,
AS 1163,
API 5L
OD:(SHS)20*20-1200*1200mm WT: 1.3mm-50mm
OD:(RHS)20*30-1200*1500mm WT:1.2-50mm
OD:(CHS)20-660mm WT:1.3-16mm
Length:4m, 6m, 12m or as your required
Brand: LEFIN STEEL
Chemical composition and Mechanical Properties
| Chemical composition and Mechanical Properties | |||||||||
| Steel Grade | Chemical composition | Mechanical Properties | |||||||
| C max. |
Si | Mn max. |
P max. |
S max. |
Ai min. |
Yield strength MPa | Tensile strength MPa | Elongation % min |
|
| S235GT | 0.20 | a,b | 1.40 | 0.040 | 0.045 | 0.020 | 235 | 340/520 | 24 |
| a ≤ 0,05% (range 1) (≤ 0,04% if option 2 is specified) or ≥ 0,15% ≤ 0,25% (range 2). | |||||||||
| b When bare tubes are specified (see option 8) the range shall be reported at the time of enquiry and order. | |||||||||
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