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About us
Tianjin lefin Industrial
TIANJIN LEFIN STEEL GROUP containing Tianjin lefin Industrial Co.,Ltd. 、Tianjin lefin steel import & export Co.,Ltd and Tianjin Shengqifeng International Trading Co., Ltd. -
Products
Steel Pipe Processing
Our main products include 1/2inch to 16 inch ERW PIPE/GI PIPE which has been produced according to BS1387/ASTM A53/EN10219/EN10255/EN10217 Standard -
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Service Capability
Guarantee Quality
Our steel pipes are suitable for oil, natural gas, shipbuilding, chemical industry, water conservancy, electrical, steel structure, construction and other related fields.
- Details
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I. Overview Of Scaffold Pipe
SCAFFOLD PIPE is the core load-bearing component of the scaffold system, mainly used to build the building support platform, providing a safe and stable working space for construction. Its core features are as follows:
1. Materials and specifications
• Material: Generally, carbon structural steel (such as Q235-A, Q355B) is adopted, which features high strength and good ductility, meeting the load-bearing requirements of buildings.• Dimensions: The common outer diameter is 48mm or 48.3mm (international standard), the wall thickness is usually
3.2mm, 3.5mm or 4.0mm, and the length is mainly 6 meters, but customization is also available.
• Surface treatment: mainly hot-dip galvanized (Hot-dipped galvanized), enhancing rust prevention and corrosion resistance, suitable for harsh outdoor environments.
2. Core functions
• Load-bearing support: As vertical poles, cross bars or diagonal braces (bracing), it constitutes the main structure of the scaffolding.• Modular design: Flexible assembly and height adjustment are achieved through fastener connections.
• Safety standards: It is necessary to pass the bending strength and tensile strength tests to ensure load safety.
3. Application scenarios
Temporary operation platforms for construction (such as building support, exterior wall work), bridge engineering, equipment maintenance, etc.
II. EN 39 SCAFFOLD PIPE (European standard scaffold pipe)
EN 39 is a mandatory technical standard formulated by Europe for scaffolding steel pipes, focusing on regulating dimensional tolerances, mechanical properties and manufacturing processes to ensure universality and safety.
Key requirements：
1. Dimensions and tolerances
• Outer diameter: Strictly limited to 48.3mm (±0.5mm) to ensure compatibility with standard fasteners.• Wall thickness: ≥3.2mm (common specification), tolerance range ±10%.
• Length: The standard length is 6.0 meters, and the cutting end must be straight without burrs.
2. Materials and Properties
• Steel grade: It must comply with European structural steel standards (such as S355JR), with a yield strength of ≥355N/mm².• Galvanized coating: Zinc coating thickness ≥85μm (hot-dip galvanized), corrosion resistance verified through salt spray test.
3. Manufacturing and Inspection
• Process control: Steel pipes should be welded seamlessly or in straight seams, with uniform weld seams and no defects.• Test items:
Tensile test (tensile strength ≥420N/mm²)
Flattening test (to test ductility)
Bending test (to verify the anti-deformation ability).
Comparison with other standards
Project EN 39 Standard Scaffolding Pipe Outer diameter 48.3mm (precise tolerance) 48mm (larger tolerance allowed) Connection compatibility Compatible with European standard fasteners (such as BS 1139) A specific fastener system needs to be matched Galvanizing requirements A zinc coating of ≥85μm is mandatory There is no uniform thickness requirement
Application advantages• Safety: Strict mechanical testing reduces the risk of fracture and is suitable for high-load scenarios (such as large factory construction).
• Versatility: Complies with international standards such as those of the European Union and the United Kingdom (BS 1139), and is commonly used in export projects.
• Durability: The high-specification galvanized coating extends the service life and reduces maintenance costs.
III. Precautions for use
1. Quality verification: Before entering the site, samples should be sent for inspection, with a focus on testing the bending/tensile strength and the thickness of the galvanized coating.
2. Regular maintenance: Inspect for rust, deformation or cracks. Severely damaged parts must be forcibly replaced.
3. Standardized erection: The vertical deviation of the uprights should be no more than 1/400 of the erection height, the step distance of the crossbars should be no more than 1.8 meters, and diagonal braces should be set up to enhance stability.Although EN 39 steel pipes are relatively expensive, their standardized design and reliable performance can significantly reduce engineering risks. They are particularly recommended for large-scale or high-safety-requirement projects. When purchasing, it is necessary to identify the vendor qualifications (such as Bythai Scaffolding and other compliant suppliers) and the EN 39/BS 1139 logo.
EN 39 SCAFFOLD PIPE
Subcategory
Keyword
- Details
-
I. Overview Of Scaffold Pipe
SCAFFOLD PIPE is the core load-bearing component of the scaffold system, mainly used to build the building support platform, providing a safe and stable working space for construction. Its core features are as follows:
1. Materials and specifications
• Material: Generally, carbon structural steel (such as Q235-A, Q355B) is adopted, which features high strength and good ductility, meeting the load-bearing requirements of buildings.• Dimensions: The common outer diameter is 48mm or 48.3mm (international standard), the wall thickness is usually
3.2mm, 3.5mm or 4.0mm, and the length is mainly 6 meters, but customization is also available.
• Surface treatment: mainly hot-dip galvanized (Hot-dipped galvanized), enhancing rust prevention and corrosion resistance, suitable for harsh outdoor environments.
2. Core functions
• Load-bearing support: As vertical poles, cross bars or diagonal braces (bracing), it constitutes the main structure of the scaffolding.• Modular design: Flexible assembly and height adjustment are achieved through fastener connections.
• Safety standards: It is necessary to pass the bending strength and tensile strength tests to ensure load safety.
3. Application scenarios
Temporary operation platforms for construction (such as building support, exterior wall work), bridge engineering, equipment maintenance, etc.II. EN 39 SCAFFOLD PIPE (European standard scaffold pipe)
EN 39 is a mandatory technical standard formulated by Europe for scaffolding steel pipes, focusing on regulating dimensional tolerances, mechanical properties and manufacturing processes to ensure universality and safety.
Key requirements：
1. Dimensions and tolerances
• Outer diameter: Strictly limited to 48.3mm (±0.5mm) to ensure compatibility with standard fasteners.• Wall thickness: ≥3.2mm (common specification), tolerance range ±10%.
• Length: The standard length is 6.0 meters, and the cutting end must be straight without burrs.
2. Materials and Properties
• Steel grade: It must comply with European structural steel standards (such as S355JR), with a yield strength of ≥355N/mm².• Galvanized coating: Zinc coating thickness ≥85μm (hot-dip galvanized), corrosion resistance verified through salt spray test.
3. Manufacturing and Inspection
• Process control: Steel pipes should be welded seamlessly or in straight seams, with uniform weld seams and no defects.• Test items:
Tensile test (tensile strength ≥420N/mm²)
Flattening test (to test ductility)
Bending test (to verify the anti-deformation ability).
Comparison with other standards
Project EN 39 Standard Scaffolding Pipe Outer diameter 48.3mm (precise tolerance) 48mm (larger tolerance allowed) Connection compatibility Compatible with European standard fasteners (such as BS 1139) A specific fastener system needs to be matched Galvanizing requirements A zinc coating of ≥85μm is mandatory There is no uniform thickness requirement
Application advantages• Safety: Strict mechanical testing reduces the risk of fracture and is suitable for high-load scenarios (such as large factory construction).
• Versatility: Complies with international standards such as those of the European Union and the United Kingdom (BS 1139), and is commonly used in export projects.
• Durability: The high-specification galvanized coating extends the service life and reduces maintenance costs.
III. Precautions for use
1. Quality verification: Before entering the site, samples should be sent for inspection, with a focus on testing the bending/tensile strength and the thickness of the galvanized coating.
2. Regular maintenance: Inspect for rust, deformation or cracks. Severely damaged parts must be forcibly replaced.
3. Standardized erection: The vertical deviation of the uprights should be no more than 1/400 of the erection height, the step distance of the crossbars should be no more than 1.8 meters, and diagonal braces should be set up to enhance stability.Although EN 39 steel pipes are relatively expensive, their standardized design and reliable performance can significantly reduce engineering risks. They are particularly recommended for large-scale or high-safety-requirement projects. When purchasing, it is necessary to identify the vendor qualifications (such as Bythai Scaffolding and other compliant suppliers) and the EN 39/BS 1139 logo.
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Address: Hengtai Road,Daqiuzhuang Town,Jinghai County,Tianjin,China
Mob: +8615122229899(whatspp)
Phone: +86 22 58171905
Fax: +86 22 58171902
E-mail:info@lefinsteel.com
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