LARGE DIAMETER PIPES that meet the best international standards.

Electric-welded steel pipes

UKRTRUBOIZOL manufactures longitudinal SAW steel pipes Ø426-1422 mm with a wall thickness of 6 to 24 mm and a length of up to 12 meters from steel of strength class up to K60.

The line’s capacity, depending on the product mix, is up to 25 thousand tons per year.

Труби сталеві електрозварні

UKRTRUBOIZOL produces longitudinal SAW steel pipes Ø426-1422 mm with a wall thickness of 6 to 24 mm and a length of up to 12 meters from steel of strength class up to K60.

The line’s capacity, depending on the product mix, is up to 25 thousand tons per year.

Full-cycle production

Production of electric-welded steel pipes

The welded pipe production line allows for the manufacture of steel pipe products in accordance with national, interstate and international standards.

This welded pipe production line has no analogues in Ukraine, as it is equipped with modern equipment for the full technological cycle of large-diameter pipe production.

The plant’s products are certified for compliance with the following standards

  • ISO 3183:2019

  • DSTU ISO 3183:2017 (ISO 3183:2012, IDT)

  • API Spec 5L

  • DIN EN 10219-1,2

  • DIN EN 10217-1,3,5,6

  • DSTU 9219:2023

  • DSTU 9218:2023

  • TU U 24.2–05757883–095:2022

  • DSTU 8943:2019

  • GOST 20295-85

  • GOST 10706-76

  • GOST 10705-80

  • GOST 10704-91 and the Technical Regulations for Pressure Equipment, Cabinet of Ministers of Ukraine No. 27 of January 16, 2019.

watch the video

Production of electric-welded steel pipes

watch the video

Production of electric-welded steel pipes

Expanded gas and oil pipelines

Standard

ДСТУ EN ISO 3183 PSL1, PSL2

Outer diameter, mm

426-1422

Wall thickness, mm

6,0-24,0

Steel grade or strength class/category

A (L210), BM(L245M), BME(L245ME), BNE(L245NE), X42M(L290M), X42ME(L290ME), X42NE(L290NE), X46M(L320M), X52M(L360M), X52ME(L360ME), X52NE(L360NE), X56M(L390M), X60M(L415M), X60ME(L415ME), X60NE(L415NE), X65M(L450M), X65ME(L450ME), X70M(L485M), X70ME(L485ME)

DSTU 9219:2023 type 3

508-1420

7,0-24,0

К34, К38, К42, К48, К50, К52, К54, К55, К56, К60

TU U 24.2-05757883-095:2022 type 3

426 – 1420

7,0-24,0

К34, К38, К42, К48, К50, К52, К54, К55, К56, К60

GOST 20295 type 3

530* – 1420

7,0-24,0

К34, К38, К42, К48, К50, К52, К54, К55, К56, К60

* At the request of the Customer, it is possible to manufacture and supply pipes with a diameter of 426 mm

Pipes for work under pressure

Standard

EN 10217-1/3/5/6

DSTU EN 10217-1/3/5/6

Outer diameter, mm

426-1422

Wall thickness, mm

7,0-24,0

Steel grade or strength class/category

P195TR1, P195TR2, P235TR1, P235TR2, P265TR1, P265TR2, P235GH, P265GH, P215NL, P265NL, P275N, P275NL1, P275NL2, P355N, P355NH, P355NL1, P355NL2, P460N, P460NH, P460NL1, P460NL2

Pipes of general purpose

Standard

DSTU 9218:2023
DSTU 8943:2019
GOST 10706-76
GOST 10705-80
GOST 10704-91

Outer diameter, mm

426-1420

Wall thickness, mm

6,0-24,0

Steel grade or strength class/category

Carbonand low-alloy steels of types 08, 10, 15, 20, St3sp, 09G2S, 09G2FB, 12G2S, 13GS, 17GS, 17G1S, 13GS-U, 17G1S-U, 13G1S-U, 10G2FB

Hollow profiles

Standard

EN 10219-1/2

DSTU EN 10219-1/2

Outer diameter, mm

426 – 1422

Wall thickness, mm

7,0-24,0

Steel grade or strength class/category

S235JRH; S275J0H; S275J2H; S355J0H; S355J2H; S355K2H – NLH, MLH

Pipes for main pipelines

Standard

API Spec 5L,

ISO 3183

PSL 1, PSL 2

Outer diameter, mm

426
508
558
610
660
711
762
813
864
914
965
1016
1067
1219
1422

Wall thickness, mm

7,0-12,0
7,0-14,0
7,0-14,0
8,0-15,0
8,0-16,0
8,0-16,0
8,0-16,0
8,0-16,0
8,0-16,0
8,0-16,0
10,0-17,0
10,0-18,0
10,0-20,0
12,0-22,0
12,0-24,0

Steel grade or strength class/category

A (L210), BM(L245M), X42M(L290M), X46M(L320M), X52M(L360M), X56M(L390M), X60M(L415M), X65M(L450M), X70M(L485M), BN(L245N), X42N(L290N), X46N(L320N), X52N(L360N), X56N(L390N), X60N(L415N)

Production process of welded steel pipes

This line for the production of welded pipes has no analogues in Ukraine, as it is equipped with modern equipment for the full technological cycle of production of large diameter pipes intended for main gas and oil pipelines and includes the following components:

Plasmacutting and edge milling

A plasma cutting unit and an edge milling mill, where the longitudinal edges of the sheet are processed to obtain a specified width and the edges are processed for welding.

Forming pipe blanks

JCO press for forming pipe billets. The total weight of JCO is more than 300 tons. Forming is carried out in several passes until the specified cylindrical shape of the workpiece profile is achieved. The forming process is controlled by a computer system.

Preforming

A forming mill for bending flat sections of the longitudinal edges of electric-welded steel pipe billets in automatic mode by rolling the edges of the pipe billet between the rollers of the forming machine.

Welding machine

Assembly and welding machine for assembling pipe billets and automatic welding of a continuous process seam in a shielding gas environment.

Condition of internal welding

Internal welding state for welding working seams with automatic submerged arc welding (two or three arcs).

Condition ofexternal welding

Machine for welding the outer working seam with automatic submerged arc welding (one, two or three arcs).

Expansion

To ensure full compliance with the requirements of modern regulatory documents, electric-welded steel pipes are subjected to cold deformation. The deformation is carried out along the entire length of the pipe on a hydromechanical expander.

Expansion involves feeding the expander’s forming tool inside the pipe for a certain length (step), expanding (expanding) this section of length with the forming tool, relieving stresses, and feeding the tool for the next step.

Hydraulic test

Hydraulic press is a test with internal hydraulic pressure to check the strength and density of the base metal of pipes. Hydraulic testing is a necessary procedure that demonstrates the reliability of pipes as elements of pipelines operating under pressure throughout their entire service life. This is extremely important, given the serious danger to human life and health, as well as the man-made hazard in the event of pipe failure and accidents.

Non-destructive testing methods

Pipes that have undergone expansion and hydraulic testing are subjected to non-destructive testing.

The base metal of the pipe ends is checked for integrity along the entire perimeter of the pipe using modern ultrasonic inspection devices.

Areas of application of tubular products

  • Oil and gas industry
  • Mining and metallurgical complex
  • Energy
  • Heat supply
  • Chemical industry

  • Mechanical engineering

  • Water supplyand sewerage

  • Construction industry
  • Metal structures

The pipes can be coated with an external anticorrosive coating of extruded polyethylene in accordance with TU U-27.2-31017014-001: 2005 or an external polyurethane coating using an airless application apparatus.

It is also possible to apply an internal anticorrosive coating with epoxy compositions according to TU U-27.2-31017014-003: 2011.