STEEL PIPES

longitudinal electric-welded steel pipes with a diameter of 406.4 to 1422 mm, a wall thickness of 6 to 24 mm and a length of up to 12 meters from steel of up to K60 strength class.

Large diameter steel pipes

NPP UKRTRUBIZOL revives the production of LDP that meet the best international standards. The principal difference of the new line is the modern equipment for the full technological cycle of LDP production for main gas and oil pipelines. The key advantage of the unique equipment is the pipe expanding mechanism.

NPP UKRTRUBOIZOL is a reliable producer and supplier

With the commissioning of a new line for the production of steel pipes, UKRTRUBOIZOL is:
  • The only pipe plant in Ukraine with a complex of equipment for a full technological cycle of LDP production for trunk pipelines.
  • Ukraine’s largest producer of large diameter steel longitudinally welded pipes with external and internal anticorrosive or smooth coatings for gas and oil trunk pipelines.
Save as installing a new line for the production of steel pipes, the plant is involved in modernizing its existing production lines for coating. In 2020, the enterprise mastered the production of pipes with an outer polypropylene coating and carried out a global reconstruction.
 
The company installed a modern set of equipment to coat powder primer. Due to its flexibility, elasticity, resistance to cracking and mechanical damage, the coating has higher adhesion, impact strength and relative fracture elongation.
A new line with a capacity of up to 25,000 tons of pipes per year was installed and put into operation. The line provides the production of longitudinal electric-welded steel pipes with a diameter of 406.4 to 1422 mm, a wall thickness of 6 to 24 mm and a length of up to 12 meters from steel of up to K60 strength class.
 
 
 

Steel pipes longitudinal electric-welded

Normative documentPipe assortmentsSteel grade or strength class / category
External diameter, ммExternal diameter, Ø мм

Gas and oil pipelines

GOST 20295 type 3 expanded530* – 14207,0-24К34, К38, К42, К48, К50, К52, К54, К55, К56, К60
*At the request of the Customer production and delivery of pipes with a diameter of 426 мм is possible

DSTU ISO 3183

PSL 1,  PSL 2

426 – 14226,0-24

A (L210), BM(L245M), X42M(L290M),

X46M(L320M), X52M(L360M),

X56M(L390M), X60M(L415M),

X65M(L450M), X70M(L485M)

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

General purpose pipes

GOST 10706-76,
GOST 10705-80,
GOST 10704-91,
DSTU 8943:2019
426 – 14206,0-24

Carbon and low-alloy steels type

08, 10, 15, 20, Ст3сп, 09Г2С, 09Г2ФБ, 12Г2С, 13ГС, 17ГС, 17Г1С, 13ГС-У, 17Г1С-У, 13Г1С-У, 10Г2ФБ

Pipes for work under pressure

EN 10217-1/

EN 10217-5

457 – 14227,0-24,0P195TR1, P235TR1, P265TR1, P235GH, P265GH

Hollow profiles

EN 10219-1/

EN 10219-2

457 – 14227,0-24,0S235JRH; S275J0H;  S275J2H; S355J0H;  S355J2H; S355K2H

Pipes for main pipelines 

API Spec 5L,

ISO 3183

PSL 1,  PSL 2

4577,0-12,0

A (L210), BM(L245M), X42M(L290M),

X46M(L320M), X52M(L360M),

X56M(L390M), X60M(L415M),

X65M(L450M), X70M(L485M)

5087,0-14,0
5587,0-14,0
6108,0-15,0
6608,0-16,0
7118,0-16,0
7628,0-16,0
8138,0-16,0
8648,0-16,0
9148,0-16,0
96510,0-17,0
101610,0-18,0
106710,0-20,0
121912,0-22,0
142212,0-24,0

Large diameter steel pipes

The plant’s products are certified for compliance with the requirements of the Technical Regulations for Pressure Equipment (Resolution of the CMU No. 27 dated 01.16.2019) and standards:
• GOST 20295-85
• GOST 10706-76
• GOST 10705-80
• GOST 10704-91
 
The company operates an integrated management system that meets the requirements of international standards, which is confirmed by the Bureau Veritas certification body:
• ISO 9001:2015
• ISO 14001:2015
• ISO 45001:2018
 
NPP UKRTRUBOIZOL has been producing and supplying high-quality products to the market of anti-corrosion insulation for more than twenty years to create reliable pipelines with a service life of up to 50 years. Due to the quality of the products, the company won authority in the markets of Ukraine and the world.

Production of longitudinal electric welded pipes

There are no analogues of this line for the production of welded pipes in Ukraine, since it is equipped with modern equipment for a full technological cycle of production of large-diameter pipes intended for main gas and oil pipelines, and includes the following components:

1. Plasma cutting and edge mill

Plasma cutting and edge mill, where processing is performed to the longitudinal edges of the sheet receiving and processing of predetermined width of the weld groove.

2. Formation of pipe blanks

JCO press for forming pipe blanks. The total weight of JCO is over 300 tons. Forming is carried out in several passes until a predetermined cylindrical shape of the blanks profile is reached. The formation process is controlled by a computer system.

3. Preforming mill

A preforming mill for bending flat sections of longitudinal edges of blanks of electric-welded steel pipes in automatic mode by rolling the edges of a pipe blank between rollers of a bending machine.

4. Welding mill

Assembly and welding machine for assembling pipe blanks and automatic welding of a continuous technological seam in a shielded gas environment.

5. Internal welding mill

Mill of internal welding for welding of working seams by automatic multi-arc (two or three arcs) welding under a layer of flux.

6. Mill of external welding

Mill for welding the external working seam by automatic multi-arc (One, two or three arcs) submerged arc welding.

7. Hydromechanical expander

To meet the requirements of modern regulatory documents, electric-welded steel pipes are cold-calibrated. Calibration is carried out along the entire length of the pipe on a hydromechanical expander. Expansion takes into account the supply of the expander calibration tool inside the pipe for a certain length (step), the expansion (expansion) of this length section using the calibration tool, removal of the expansion force, as well as the supply of the tool to the next step.

The expansion operation provides the following:

  1. Stabilization of the mechanical properties of the base metal of the pipe due to hardening mechanisms during the transition to the plastic deformation region.
  2. Giving a pipe billet to the required shape and dimensions (ovality, perimeter, deviation from the theoretical circumference, curvature, etc.).
  3. Additional quality control of welded pipe joints.
The company operates an integrated management system that meets the requirements of international standards, which is confirmed by the Bureau Veritas certification body:
ISO 9001:2015    ISO 14001:2015   ISO 45001:2018

ISO 9001:2015

ISO 14001:2015

ISO 45001:2018

UKRAINE’S ONLY LINE FOR THE PRODUCTION OF EXPANDED PIPES FOR OIL AND GAS PIPELINES

Considering the compliance with quarantine measures, it took a year and a half for the installation, debugging, obtaining permits and launching the line for the production of expanded large-diameter pipe. Now work is underway to install a hydromechanical expander for through expansion of pipes with a diameter of 406.4 mm to 1422 mm with a wall thickness of up to 24 mm. This equipment provides high strength and precise geometry of pipes along the entire length. There are no analogues of such equipment in Ukraine.

The new line is additionally equipped with a hydraulic press for internal pressure testing. Hydraulic test is performed to check the strength and continuity of the base metal and pipe welds. This guarantees the reliability and durability of pipelines operating under pressure.

THE PRINCIPLE OF OPERATION OF NPP UKRTRUBOIZOL’S HYDROMECHANICAL EXPANDER

A cone-shaped expansion head located at the end of the rod of a pipe hydromechanical expander is inserted into the pipe at a certain distance – a step. Expansion head segments extent and exert pressure on the inner surface of the pipe along the entire perimeter. Stresses appear in the pipe walls equal to the metal’s yield point. An increase in diameter – plastic deformation – occurs. After the segments of the expansion head take the initial position, the pipe slightly decreases in diameter due to the spring return of the metal and takes the given form. The cycle circulates with each step of the expander movement along the pipe axis. As a result, the pipe gets the specified geometric parameters (perimeter, curvature, ellipticity) and stabilization of mechanical properties.

8. Hydraulic test

The new line is additionally equipped with a hydraulic press for internal pressure testing. Hydraulic test is performed to check the strength and continuity of the base metal and pipe welds. This guarantees the reliability and durability of pipelines operating under pressure.

9.Non-destructive method of control

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

Checking the base metal of the pipe ends for integrity along the entire perimeter of the pipe is carried out with modern ultrasonic testing devices.

Області застосування трубноїї продукції

Application area

Additionally

The pipes can be coated with an external anti-corrosion coating with extruded polyethylene according to TU U-27.2-31017014-001: 2005 or an external polyurethane coating with an airless application device. The application of internal anti-corrosion coating with epoxy compositions according to TU U-27.2-31017014-003: 2011 can also be performed.

Contact us

UKRTRUBOIZOL, Zavodskaya Str., 2. Pgt. Meliorativny, Novomoskovskiy r. Dnepropetrovskaya obl. UKRAINE 51217

Tel./fax: +38 (056) 736-25-64

Tel./mob: +38 (063) 849-71-66

 

E-mail: office@uti.ua