eN 39

EN-39-Scaffolding-Steel-Pipe

EN 39 Scaffolding Pipe

At UNIACERO, we proudly offer steel pipes that adhere to the European norm EN 39, a standard that specifies the requirements for unalloyed carbon steel welded round tubes. These tubes are primarily intended for use in the construction of scaffolding, ensuring robustness and safety in construction projects. Originating from Europe, the EN 39 standard has been recognized and adopted globally, reflecting its high quality and reliability. Our steel pipes are not only compliant with this standard but also resonate with the dedication and expertise that UNIACERO brings to the international trading arena.

EN 39 Specification

Our EN 39 steel pipes are meticulously crafted, ensuring they meet the stringent requirements of the standard. These tubes are designed for use with EN 74 couplers in the construction of falsework and working scaffolds. They come with a specified outside diameter of 48,3 mm and thickness options of 3,2 mm or 4,0 mm. The protective coating on our pipes is in line with European and International Standards, ensuring longevity and resistance to environmental factors. Moreover, our pipes undergo rigorous inspection and testing to guarantee their quality and durability.

Production StandardEN 39
Manufacturing ProcessesERW (Electric Resistance Welded)
SMLS (Cold Drawn Seamless)
SMLS (Hot Finished Seamless)
Outside Diameter48.3 (1 1/2″ )
Wall Thickness3.2mm , 4mm
Pipe Length6 meters, 6.4 meters or customized from 4 meters to 12 meters.
Steel GradeBS EN39 S235GT
Corrosion PreventionLacquer, Oiling, Galvanizing
End ProcessesSquare Cut
Further ProcessingWelding, Bending, Hole Drilling, Punching, Swaging, Tapering, Flaring, Expanding

EN 39 Dimension Table

schematic-diagram-of-pipe-dimension

Our EN 39 steel pipes are available in a specified outside diameter of 48.3 mm. The thickness options we offer are 3.2 mm and 4.0 mm, catering to various construction needs. These dimensions ensure that our pipes fit seamlessly with EN 74 couplers, providing a sturdy and reliable scaffolding structure. With UNIACERO, you can be assured of precision in every millimeter.

Outside DiameterWall Thickness
Type 3Type 4
48.3 mm3.2 mm4.0 mm

Chemical Requirements of EN 39

The chemical composition of our EN 39 steel pipes is meticulously maintained to ensure strength and durability. They contain Carbon (0.12-0.18%), Silicon (0.10-0.35%), Manganese (0.25-0.50%), Nickel (3.90-4.30%), Chromium (1.00-1.40%), and Molybdenum (0.15-0.3%).

Steel GradeChemical Composition in %,by massMechanical Properties
Steel NameSteel NumberCSiMnPSAlYield Strength
ReH
min
Tensile Strength
Rm
Elongation
A
min
  max. max.max.max.min.MPaMPa%
S235GT1.01060.20a,b1.40.040.0450.02235340/52024
  • a: ≤0.05% (range 1)(≤0.04% if option 2 is specified )or ≥0.15%≤0.25%(range2).
  • b:When bare tubes are specified(see option 8)the range shall be reported at the time of enquiry and order.

Mechanical Requirements of EN 39

Our EN 39 steel pipes boast impressive mechanical properties. They offer a tensile strength range of 1000-1400MPa, ensuring they can withstand significant stress and weight. The pipes also have a yield strength of Min 235 MPa and an elongation of Min 24%, providing flexibility without compromising on strength.

Steel GradeChemical Composition in %,by massMechanical Properties
Steel NameSteel NumberCSiMnPSAlYield Strength
ReH
min
Tensile Strength
Rm
Elongation
A
min
  max. max.max.max.min.MPaMPa%
S235GT1.01060.20a,b1.40.040.0450.02235340/52024
  • a: ≤0.05% (range 1)(≤0.04% if option 2 is specified )or ≥0.15%≤0.25%(range2).
  • b:When bare tubes are specified(see option 8)the range shall be reported at the time of enquiry and order.

Steel Grades in EN 39

The steel grade for our EN 39 pipes is a testament to their quality and durability. The pipes are crafted from a 4 1/4% Nickel Chromium Molybdenum carburising steel, ensuring they are robust and long-lasting. This grade is typically supplied annealed to HB 277 max, providing a balance between hardness and flexibility.

Our Advantages

  1. Over 25 years of experience in pipeline production and installation.
  2. Comprehensive inspection equipment.
  3. Independent product serial numbers for traceability.
  4. Advanced production equipment – Seamer high-frequency welding machine from the United States.
  5. Complete qualifications – API 5L/API 5CT/FM/UL fire pipe certification, etc.
  6. Wide range of products – independently developed solar torque tubes, highly favored in the European market.
  7. Customers spread across the globe.
  8. Excellent after-sales service and sense of responsibility.

Application Scenarios

Our steel pipes are engineered to withstand high temperatures, corrosive environments, and varying pressures, ensuring reliability and safety in the complex petrochemical processes. 

Whether it’s transferring crude oil, natural gas, or chemical intermediates, the robustness and versatility of steel pipes make them indispensable components of the plant’s infrastructure, contributing to efficient production and maintenance of stringent safety standards.

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