About us

The Company was founded in 2010 on the basis of experience of managers and engineers from the marine, steel structure, and welding industries gained over the years. The main activity of the Company is the prefabrication of pipelines and production of deck gratings.

The Porta Marine Service Sp. z o.o. Company has a cutting edge special, assembly, and welding equipment at its disposal.

We carry out the production in halls with a total surface of 2700 m2 equipped with gantries and cranes. The dimensions of halls, as well as their equipment and crane systems, confirm our production capabilities.

We want to meet your expectations and provide the maximum satisfaction possible. Therefore we want to present our Company as a potential contractor of pipelines and deck gratings.

We ensure that we are able to guarantee the highest quality of our products.

We count on your interest in our Company and we are at your disposal.


The highest quality guarantee

  1. Quality Assurance System implemented and certified by DNV according to ISO 3834-2:2021 and ISO 9001:2015
  2. Plant Recognition Certificate by DNV
  3. Certificate of qualification of the Plant for Welding of pipelines of classes I, II and III – DNV
  4. Certificate of Approval of the Plant by PRS
  5. Welding technology tested and certified by DNV-GL, RINA and TÜV in accordance with the EN 15614-1 standard
  6. Welding personnel have appropriate certificates and authorizations to conduct welding work: IWE (International Welding Engineer) granted by the International Institute of Welding; Level II certificates entitling to Visual Tests VT II, Magnetic-Particle tests (MT level 2) and Penetration tests (PT level 2) issued by TÜV Cert and the Welding Institute in Gliwice; All our welders have appropriate qualifications granted in accordance with the ISO 9606-1 and ISO 9606-3 standards.
  7. The products manufactured are certified by such Classification Societies as: Lloyd’s Register (LR), Bureau Veritas (BV), American Bureau of Shipping (ABS), DNV, RINA and others.



Pipelines made in the Porta Marine Service Sp. z o.o Company’s halls are welded according to our own technology recognised by Classification Societies using the following methods (acc. to EN 24063/ISO 4063):

  • 141 (TIG)
  • 135  (MAG)
  • 136
  • 141/136
  • 135/136

Welded materials:

  • carbon steel (S235JRH, S355, etc.)
  • high alloyed steel (304, 304L, 316, 316L, etc.)
  • Copper alloys (CuNiFe)
  • Aluminium

Shaped cutting:

We have a specialized CNC cutting machine for shape cutting, which allows us to perform all types of cuts, including beveling, up to a pipe diameter of 1200 mm.

Plasma cutting is performed on an area over 12 m long.


The Porta Marine Service Sp. z o.o Company has at its disposal devices used to make a full scope of Victaulic-type pipe connections.