Odelya International Steel

ERW Line Pipes

Odelya® ERW High Frequency Welded Steel Pipes for water / gas / oil conveyance are produced from hot rolled steel coils which are then formed cold and welded to connect two strip edges. High frequency current welding process is used along with continuous control in manufacturing of ERW pipelines to obtain high quality weld. Odelya® ERW line pipes have a pure and smooth surface, uniform thickness and high concentricity, meeting special requirements of each project. Furthermore, Odelya® ERW Pipelines can support heavy weights and due to its well mixed metallographic structure of the weld seam, these line pipes have excellent anti-press ability against even the most hostile conditions. Due to high capacity of manufacturing and minimized tolerances, Odelya® ERW project-oriented steel pipes are preferred as tailormade customized solutions for prestigious piping projects around the world.


Pipelines for construction and maintainance of offshore and onshore oil & gas pipelines, petrochemicals, as well as piping for cooling, heating, ventilation, water conveyance and structural elements along with tubes for general purposes.

Pipe End and Pipe Joints Details

While the pipes are joined, the weld penetration and its strength are ensured through special furnishing process for plain-end, square-cut or bevelled, welded joint, flanged joint, cylindrical socket and spigot joints, spherical (belled) spigot and socked joint plain end for special coupling, butt welded and threaded-end pipe.

Surface Conditions

Odelya ERW Line Pipes are delivered as bare, black/self-colored, oiled, black varnished, galvanised or coated (Epoxy lining and coating, 3-Layer Polyethylene (3LPE) and Polypropylene (3LPP) coating, Polyurethane (PU) coating, etc.).

For coating types and coating tests please refer to
“External Coating and Internal Lining” section.

Heat Treatment

Full body annealed for O.D. ranging from 21,3 to 168,3 mm and weld seam annealed for O.D. 114,3 – 610 mm.


Outside Diameter:
21,3 – 610 mm (0,839 – 24 inch)
Wall Thickness:
2 – 12,7 mm (0,079 – 1/2 inch)
6 – 18,3 m


API 5L / ISO 3183 PSL 1
A 25, Gr A, Gr B, X42, X46, X52, X56, X60, X65, X70
API 5L / ISO 3183 PSL 2
Gr B, BM, X42M, X46M, X52M, X56M, X60M, X65M, X70M, X80M, BN, X42N, X46N, X52N, X56N, X60N
EN 10208-1 / 2
L210GA, L235GA, L245GA,L290GA, L360GA, L245NB, L290NB, L360NB, L415NB, L245MB, L290MB, L360MB, L415MB, L450MB, L485 MB
EN 10025
S235, S275, S355
DIN 17100
St 37, St 44, St 52
DIN 2470-2 / DIN 17172
StE210.7; StE240.7; StE290.7; StE320.7; StE360.7
GOST 10705 / GOST 10704, GOST 20295

GOST 1050-08SP, 10SP, 20SP


API 5L / ISO 3183 PSL 1 & PSL 2

EN 10208-1 (DIN 2470-1 / DIN 1628)

EN 10208-2 (DIN 2470-2 / DIN 17172)

ASTM A 53 (BS 3601, DIN 1626 / 2458)

GOST 20295, GOST 10705 / GOST 10704


Odelya® ERW Line Pipes are manufactured under precise control; all required and specified tests are applied by using computerized technics and modern measurement equipment. Raw material control at the beginning of pipe manufacturing allows to avoid further defects; moreover, quality control during and after manufacturing of steel pipes prevents undesired defects, reassuring superior quality of finished product. Quality control tests may vary according to specifications of production standards and to requirements of further operation conditions.

Hydrostatic Test
Testing of leakage in the welded areas by high pressure water applies according to further application and requirements (Leak Tightness).

Non-Destructive Tests

EN 10208-1, EN 10208-2, U/S (EN 10246-8 Level U3), E/C (EN 10246-3 Level E2)

Eddy Current Test
Detection of the defects on the surface and testing quality of the weld and the material using electromagnetic device.

Magnetic Flux Leakage
A powerful magnet is used to assure the absence of any corrosion or damaging on steel tubing by evaluating magnetic field ‘leakage’.

Ultrasonic Test –Full Body & Weld-zone Ultrasonic Tests
Automatic ultrasonic rotary plant precisely detects flaws and monitors weld quality using high frequency sound waves. Online ultrasonic inspection ensures 100% flaw detection and its immediate elimination. Offline ultrasonic test, on the other hand, using horizontal and vertical flaw detection as well, evaluates different layers of welding zone and pipeend.

Grain-size Control
Controlling the rate of metal grain’s growing during its heating above recrystallization range.

Visual & Dimensional Inspection
Accurate information about dimensions and quality of tubes is provided using tape, caliper, ultrasonic device, gauge and cord.

Chemical Analysis
Spectral analysis of the chemical composition.

Mechanical & Technological Properties

Tensile Test
Determining mechanical properties, such as yield strength, tensile strength, Young’s module, deformation, elongation, strain hardening behavior, and reduction of sample.

Flattening Test
Quality, strength and ductility of the weld and the tube is evaluated by pressure application.

Bending Test
Evaluating ductility of the tubes and the welds to resist cracking or other surface irregularities during one continuous bend of the material.

Drift Expanding
Determining the durability of steel tubes to withstand heavy weights and pressure.

Weld Ductility Test
Evaluation of welding zone ability to flatten without cracks or breaks until specified by standard degree.

Fracture Toughness Test
Indicating the amount of stress required to cause brittle or ductile crack extension in a sample with preexisting flaw.


Revealing the structure of metals and their alloys with light optical or scanning electron microscope.