Steel pipes

Seamless pipes

We offer the following types of pipes (grades are exemplary):

1. steel pipes for pressure equipment. Unalloyed steel pipes with specified room temperature properties – manufactured in accordance with PN-EN 10216-1 standard:

P195TR1, P195TR2, P235TR1, P235TR2, P265TR1, P265TR2

2. pipes for pressure purposes in elevated temperatures – boiler pipes – manufactured in accordance with PN-EN 10216-2 standard:

P195GH, P235GH, P265GH, 16Mo3, 14MoV6-3, 13CrMo4-5, 10CrMo9-10, X10CrMoVNb9-1, X10CrWMoVNb9-2

3. pipes for pressure purposes made of fine-grained steel – manufactured in accordance with PN-EN 10216-3 standard:

Standard quality: P355N, P460N, P620Q, P690Q;

  • For application at elevated temperatures: P275NH, P355NH, P460HN, P620QH, P690QH;
  • For application at low temperatures: P275NL1, P355NL1, P460NL1, P620QL, P690QL1;
  • For application at special low temperatures: P275NL2, P355NL2, P460NL2, P690QL2.

4. pipes for pressure purposes made of alloyed and unalloyed steel for application at low temperatures – manufactured in accordance with PN-EN 10216-4 standard:

P215NL, P255QL, P265NL, 26CrMo4-2, 11MnNi5-3, 13MnNi6-3, 12Ni14, X12Ni5, X10Ni9

5. seamless steel pipes for pressure purposes – pipes made of corrosion-resistant steel – manufactured in accordance with PN-EN 10216-5 standard:

X2CrNi18-9, X2CrNi19-11, X5CrNi18-10, X6CrNiTi18-10, X6CrNiNb18-10, X2CrNiMo17-12-2, X5CrNiMo17-12-2, X1CrNiMoN25-22-2, X6CrNiMoTi17-12-2, X2CrNiMo18-14-3, X1NiCrMoCu25-20-5, X2CrNiMoN22-5-3, X15CrNiSi25-20

6. steel pipes for transportation of combustible fluids – pipes of requirement class A – manufactured in accordance with PN-EN 10208-1 standard:

L210GA, L235GA, L245GA, L290GA, L360GA

7. steel pipes for transportation of combustible fluids – pipes of requirement class B – manufactured in accordance with PN-EN 10208-2 standard:

L210GA, L235GA, L245GA, L290GA, L360GA

Welded pipes

We offer the following pipes:

  • longitudinally welded pipes
  • helically welded pipes
  • electrically welded pipes
  • submerged arc-welded pipes
  • alloyed and unalloyed steel pipes
  • pipes for pressure, mechanical and industrial applications
  • corrosion-resistant pipes
  • pipes of special properties at low, room or elevated temperatures
  • seamed pipes up to 2200 mm in diameter

We offer the following types of welded pipes (grades are exemplary):

1. welded steel pipes for pressure purposes – unalloyed pipes with specified room temperature properties – manufactured in accordance with PN-EN 10217-1 standard:

P195TR1, P235TR1, P265TR2 P195TR2, P235TR2, P265TR2

2. welded steel pipes for pressure purposes – electrically welded alloyed and unalloyed steel pipes with specified elevated temperature properties – manufactured in accordance with PN-EN 10217-2 standard:

P195GH, P235GH, P265GH, 16Mo3

– welded steel pipes for pressure purposes – pipes made of alloyed fine-grained steels – manufactured in accordance with PN-EN 10217-3 standard:

P275, P355, P460

3. welded steel pipes for pressure purposes – electrically welded unalloyed steel pipes with specified low temperature properties – manufactured in accordance with PN-EN 10217-4 standard:

P215NL and P265NL

4. welded steel pipes for pressure purposes – submerged arc welded unalloyed and alloyed steel pipes with specified elevated temperature properties – manufactured in accordance with PN-EN 10217-5 standard as SAWH (helically welded) and SAWL (longitudinally welded):

P235GH ,P265GH, 16Mo3

5. welded steel pipes for pressure purposes – submerged arc welded unalloyed steel pipes with specified low temperature properties – manufactured in accordance with PN-EN 10217-6 standard:

P215NL and P265NL

6. welded steel pipes for pressure purposes – corrosion-resistant steel pipes – manufactured in accordance with PN-EN 10217-7 standard:

X2CrNi18-9, X2CrNi19-11, X5CrNi18-10, X6CrNiTi18-10, X6CrNiNb18-10, X2CrNiMo17-12-2, X5CrNiMo17-12-2, X1CrNiMoN25-22-2, X6CrNiMoTi17-12-2, X2CrNiMo18-14-3, X1NiCrMoCu25-20-5, X2CrNiMoN22-5-3, X15CrNiSi25-20

Pipes for precision applications

  • Pipes for precision applications are mainly used in the engineering industry
  • Such pipes are manufactured with a great precision, have a wide variety of sizes, exceptional surface finish and outstanding mechanical and technological properties
  • Pipes for precision applications are fabricated in the cold drawing process
  • They are produced with or without heat treatment, normalisation or annealing in the diameters range from 4 to 120mm and wall thickness up to 12.5mm.

Pipes are manufactured in accordance with EN 10305-1 through 6 standards.

Pipes for the power industry

Pipes for the power industry are made of fine-grained steels and are intended for high-temperature service. Those pipes are mainly used for the construction of boiler parts such as superheaters, condensers or heat exchangers and are delivered in the normalised state.

We offer the following types of pipes (grades are exemplary):

1. steel pipes for pressure purposes at elevated temperatures – boiler pipes – manufactured in accordance with PN-EN 10216-2 standard:

P195GH, P235GH, P265GH, 16Mo3, 14MoV6-3, 13CrMo4-5, 10CrMo9-10, X10CrMoVNb9-1, X10CrWMoVNb9-2

2. welded steel pipes for pressure purposes – electrically welded unalloyed and alloyed steel pipes with specified elevated temperature properties – manufactured in accordance with PN-EN 10217-2 standard:

P195GH, P235GH, P265GH, 16Mo3

3. welded steel pipes for pressure purposes – submerged arc welded unalloyed and alloyed steel pipes with specified elevated temperature properties – manufactured in accordance with PN-EN 10217-5 standard as SAWH (helically welded) and SAWL (longitudinally welded):

P235GH ,P265GH, 16Mo3

Chemical composition of the new high-temperature creep resisting steels for supercritical boilers

Comparison of steel grades - Pipes for pressure purposes at elevated temperature (BOILER PIPES) - PN-EN 10216-2 standard

Comparison of steel grades - heat-resisting steels - PN-EN 10088

Steel pipes for transportation of combustible fluids

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Such pipes are used in construction of various types of piping and pipelines for building, mining, chemical and gas industries. Pipes are tested for the pressure guaranteed by the standard. Pipes may be additionally tested for the pressure higher than 7 MPa when desired by the purchaser.

We offer the following types of pipes (grades are exemplary):

1. steel pipes for transportation of combustible fluids – pipes of requirement class A – manufactured in accordance with PN-EN 10208-1 standard:

L210GA, L235GA, L245GA, L290GA, L360GA

2. steel pipes for transportation of combustible fluids – pipes of requirement class B – manufactured in accordance with PN-EN 10208-2 standard:

L245NB, L290NB, L360NB, L415NB, L360QB, L415QB, L450QB, L485QB, L555QB, L245MB, L290MB, L360MB, L415MB, L450MB, L485MB, L555MB

Structural pipes

Structural pipes are used with various types of steel structural components. They meet the requirements for any other structural components, i.e. bars, shapes or plates. Classification of those pipes is based on their outside diameters and wall thicknesses. Low demand on structural pipes causes unification of those pipes with the transportation pipes of large outside diameters resulting in lower production costs. Special requirements may be specified dependent on the end use of structural pipes.

We offer the following types of pipes (grades are exemplary):

1. Hot rolled welded round closed pipes made of structural unalloyed steels PN-EN 10210-1 and PN-EN 10210-2:

Unalloyed steels: S235JRH, S275JOH, S275J2H, S355JOH and S355J2H

Fine-grained steels: S275NH, S275NLH, S355NH, S355NLH, S460NH, S460NLH

 

Chromium-manganese-silicon structural alloy steel 30HGSA30HGS PN-89H-8403004 for quenching and tempering

Structural alloy steel - structural pipes

Carbon steel pipes

Carbon steels used in production consist not only of carbon and iron. For technological reasons, i.e. improved deoxidation or desulfurization, carbon steels also contain small traces of other elements, such as: silicon, manganese and aluminium. Steels also contain elements like sulphur, phosphorus, oxygen, hydrogen and nitrogen. Their total content is marginal, yet due to high costs removal of those elements is economically unjustified. Even small amounts of additional elements may affect the properties of the steel.

Carbon steels contain certain amounts of elements that are beneficial to their properties: Manganese – 0.8%, Tungsten – 0.2%, Molybdenum – 0.005%, Silicon – 0.4%, Cobalt – 0.2%, Vanadium – 0.05%, Nickel – 0.3%, Copper – 0.2%, Titanium – 0.005%, Chromium – 0.3% and Aluminium – 0.1%.

Undesirable elements that even in small amounts may be detrimental to steel properties are: sulphur, phosphorus, oxygen, hydrogen and nitrogen.

Alloy steel pipes

Alloy steels are alloys of iron and carbon with other alloying elements added deliberately in order to improve their physical, chemical, mechanical and technological properties. Commonly used alloying elements are: molybdenum, vanadium, aluminium, tungsten, nickel, chromium, manganese, silicon, titanium, niobium and cobalt. Depending on the application, the percentage of those elements may vary from 0.01% up to tens percents.

Because of cumulative fraction of alloying elements, alloy steels may be broken down into three groups:

  • low-alloy steels (content of one elements [except for carbon] is not greater that 2.0% and the total content of all additional elements is not greater that 3.5%),
  • medium-alloy steels (content of one elements [except for carbon] is greater than 2.0% but less than 8.0% and the total content of all additional elements is not greater that 12%),
  • high-alloy steels (content of one elements [except for carbon] is greater than 8.0% and the total content of all additional elements is not greater that 55%).

Comparison of steel grades - stainless and acid-resistant steels

High-alloy special properties steel - boiler pipes

Chromium-nickel-molybdenum-titanium acid-resistant high-alloy steel H17N13M2T PN-71H-86020