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Special Tube | Special Hot Extruded Steel and Stainless Steel Rectangular Hollow Section

Číslo položky: specialhollowprofile
Výrobce: Siderval
Kategorie produktu: Siderval
Skupina produktu: Special hot extruded steel and stainless steel Mullion for curtain wall and façade
Datum publikování: 2018-04-24
Číslo vydání: 1
Typ: Objekt
Stáhnout (8)

Special Tube | Special Hot Extruded Steel and Stainless Steel Rectangular Hollow Section is a hollow steel bar made by hot extrusion.

The peculiarity of the extrusion process is that special shapes can be realized on the customer demands/drawings. (We can create custom-made profiles)

Special Tube | Special Hot Extruded Steel and Stainless Steel Rectangular Hollow Section is the product to choose when not standard shape dimensions are needed. 

Hot extruded rectangular and square hollow sections made of steel or stainless steel can optimize the material thickness. Usually, the shorter flanges are thicker in order to carry the loads.

In the field of façade construction, due to this static optimization is possible to design compact profile and at the same time high spans.
Siderval offers the highest level of flexibility with its product range of hot extruded special box sections.

You can design your mullion according to your project-specific static requirements. 

You are free to design the optimum mass distribution, taking into account the maximum weight saving.

Like all our products, it is available in a wide range of dimensions and qualities: stainless steel (304 / 304L, 316 / 316L, 316Ti, 321), carbon steelsuperalloys and even titanium.

New shape dimensions can be made on request. 

These special tubes can be used for structural and mechanical applications, including mullions and transoms for steel curtain walls, beams, protections, etc. when high mechanical characteristics are needed.

Rectangular hollow sections are a very popular design on façades.

If your project requires something non-standard, our manufacturing technology allows us to produce custom sections in the shape and alloy you demand to meet your exact needs.

Different sections and sizes on request. We create your unique profile.

Siderval: your partner for outstanding steel architecture projects.

Contact us and visit our website www.siderval.it

Special Tube | Special Hot Extruded Steel and Stainless Steel Rectangular Hollow Section

Steel Grades: 

stainless steel  AISI 304 / 304L, 316 / 316L, 316Ti, 321

carbon steel

super alloys

Random lengths: L=20' - 25' (4/7m)
Otherwise as request.
General tolerances according to ASTM A 484/A 484M
Further grades and dimension available on request


  • structural and mechanical applications
  • structural mullions and transoms for façade curtain wall 
  • multi-storey columns
  • space frames



  • Fit in a circle of max Ø 200 mm | Inside diameter for hollow profiles: from 20 mm to 160 mm
  • Minimum thickness: 4 mm
  • Internal radii: min 4.0 + 2/0 mm
  • External radii: min 1.5 +/- 0.5 mm Bending tolerance: Max 1 mm/m


Up to c. 16 m


from 1,5 kg/m up to 110 kg/m


Depending on profile cross-section and material


Carbon steel - Stainless steel - Duplex - Titanium - Steel alloys

All required heat treatments are available

Surface treatments and finishing on demand


  • Special section and geometry based on the customer drawing for specific projects
  • Special lengths
  • Special finishing
  • High mechanical properties
  • Special steel qualities (stainless steel grades, carbon steel, alloys)

    Materiál hlavní: Steel
    Sekundární materiál:
    Navrženo: Italy
    Vyrobeno: Italy

    BIMobject kategorie: Konstrukce - Ocelová konstrukce
    IFC klasifikace: Structural Member
    Uniclass 1.4 Kód: L6512
    Uniclass 1.4 Popis: Steel sections
    Uniclass 2.0 Kód: PR-60-51-81
    Uniclass 2.0 Popis: Stainless Steel Bars, Rods And Sections
    Uniclass 2015 Kód: Pr_20_76_51
    Uniclass 2015 Popis: Metal sections
    NBS Reference Kód: 15-10
    NBS Reference Popis: Structure
    CSI MasterFormat 2014 Code: 05 12 23
    CSI MasterFormat 2014 Title: Structural Steel for Buildings
    Číslo OmniClass: 23-13 35 00
    Název OmniClass: Framing Products
    CSI UniFormat II Code: B
    CSI UniFormat II Title: SHELL
    Tento produkt je k dispozici v:
    • South Africa
    • China
    • Georgia
    • Hong Kong
    • India
    • Japan
    • Macau
    • Malaysia
    • Singapore
    • South Korea
    • Taiwan
    • Vietnam
    • Albania
    • Andorra
    • Austria
    • Belgium
    • Bosnia and Herzegovina
    • Bulgaria
    • Croatia
    • Czech Republic
    • Denmark
    • Estonia
    • Finland
    • France
    • Germany
    • Greece
    • Hungary
    • Ireland
    • Italy
    • Liechtenstein
    • Lithuania
    • Luxembourg
    • Macedonia (FYROM)
    • Moldova
    • Monaco
    • Montenegro
    • Netherlands
    • Norway
    • Poland
    • Portugal
    • Romania
    • Russia
    • San Marino
    • Serbia
    • Slovakia
    • Slovenia
    • Spain
    • Sweden
    • Switzerland
    • Ukraine
    • United Kingdom
    • Vatican City
    Middle East
    • Israel
    • Jordan
    • Saudi Arabia
    • Turkey
    • United Arab Emirates
    North America
    • Canada
    • Costa Rica
    • Mexico
    • United States
    • Australia
    • New Zealand
    • United States Minor Outlying Islands
    South America
    • Argentina
    • Bolivia
    • Brazil
    • Chile
    • Colombia
    • Ecuador
    • Paraguay
    • Peru
    • Uruguay