Odelya International Steel

Hollow Structural Sections ( Round / Square / Rectangular )

Odelya offers cost-effective, variable, and customized solutions of structural steel tubing for many application areas with accordance to international standards. 

Odelya® ERW Structural Steel Tubes with specially-composed chemical and mechanical properties, offer balanced and practical solutions for many constructional and industrial areas, from in-building designs to superstructure applications. 

Produced with three typical shapes (circular, square, rectangular), other special shapes (such as elliptical, oval) are also available upon request. 

Excellent strength properties, perfect distribution of material around the axis of Odelya® Hollow Sections and superior production quality, provide durability, bendability, and a light weight of steel structures. 

Odelya® High Frequency ERW Hollow Structural Sections vary on their material types, surface conditions, process- ing types, and are available as: carbon or stainless, black (self-colour), surface-coated, galvanized, plain and bevelled-end…


Building and bridge construction, automotive industry, mechanical engineering, framework structures and other components for transportation vehicles, light and heavy duty machinery, building scaffolding structures, amusement parks and playground equipment, furniture, machine and agriculture tools, racks, elevators and platforms for vertical access, space frames, industrial structuring works, greenhouses, solar energy systems, guard rails for staircases, sports galleries, pedestrian walkovers, etc.

Surface Conditions

According to the requirements of the application, Odelya® Hollow Sections can be manufactured as, bare, black, self-coloured, painted, red primer painted, oiled, cold rolled, hot finished unpickled, hot rolled pickled steel with chosen protective coatings (‘galfan coating’ or ‘galvanizing –zinc coated’).


Outside Diameter for Circular Tubes:
10 – 406,4 mm (0,39 – 16 inch)
Dimensions of Square Tubes:
10 x 10 – 400 x 400 (0,39 x 0,39 – 15,75 inch)
Dimensions of Rectangular Tubes:
10 x 15 – 300 x 400 (0,39 x 0,59 – 11,81 x 15,75 inch)
Outside Diameter for Scaffold Tubes:
48,3 mm (19 inch)
Wall Thickness:
0,5 mm – 12,5 mm (0,020 – 0,49 inch). Wall thickness of 14 mm may be proposed as a solution for large dimensions (300 x 300 and 350 x 250 mm).
Wall Thickness for Scaffolding Tubes:
3,2 or 4 mm (0,26 or 0,157 inch)
6 m (standard). According to the requests, length may vary between 2 to 12 meters.
Length of Scaffolding pipes:
4 – 8.5 m
Note: O.D. and other dimensional tolerances depend on sizes and production standards, please contact our sales team for details.


EN 10025
S 195, S 235 JR, S 235 JO, S 235 J2, S 275 JR, S 275 JO, S 275 J2, S 355 JR, S 355 JO, S 355 J2, S 355 K2
EN 10305
E 155, E 190, E 195, E 220, E 235, E 260, E 275, E 320, E 355, E 370
EN 10219
Non-alloy: S235JRH, S275J0H, S275J2H, S355J0H, S355J2H, S355K2H; Fain grain steels: S275NH, S275NLH, S355NH, S355NLH, S460NH, S460NLH; 460 MH
EN 10210
235, S 275, S 355, S 420, S 460
ASTM A 500
Grades A, B, C
ASTM A 513
EN 39
S 235 GT (BS 1139: 34/26, 43/36)
Delivery Conditions
Cold formed, hot formed, cold drawn (hard and soft), cold drawn and stress relieved, with or without subse- quent heat treatment, welded and cold sized, normalized, annealed, drawn over a mandrel (DOM), special smooth inside diameter (S.S.I.D.), as-welded and sink-drawn.

Finishing Operations
Plain end, square-cut or bevelled


EN 10305-5 (BS 6323(-5), DIN 2395)

EN 10305-3 (BS 6323-5,6, DIN 2394-2, NFA 49-643: XPA 49-646, UNI 7947)

EN 10219 (DIN 2458 (TDC DIN 1615, DIN 17120), DIN 59411, BS 4360, SI 1458-1, NFA 49-541, UNE 36537)

EN 10210 (SI 1458-2)

EN 39 (BS 1139)

ASTM A 500, ASTM A 513

ISO 10799-2 (ISO 4019)


Chemical Analysis
Spectral analysis of the chemical composition

Mechanical & Technological Tests
Tensile test, impact test, flattening test, flaring test, expanding test, surface roughness test

Visual Inspection & Dimensional Check
Accurate information about dimensions and quality of tubes is provided using tape, caliper, ultrasonic device, gauge and cord Note: Applied tests vary according to the related standard and application. Please refer to page 52 for more details about our Quality Assurance Policies.