Lokring receives DNV Product Type Approval for its elastic strain preload (ESP™) SS40, MAS-3000 and CN Product lines

Willoughby (OH) – March 25, 2021 -Lokring has received DNV Product Type Approval for its elastic strain preload (ESP ™ ) SS40, MAS-3000 and CN Product lines.

Lokring Technology LLC, a leading provider of advanced pipe and tubing connector products for global fluid and gas transfer markets, announced today it has attained DNV Product Type Approval certification for products:

  • SS40-P
  • SS40-T
  • SS-3300-P
  • SS-3300-T
  • MAS-3000
  • SS-3300-P
  • SS-3300-T
  • MAS-3000
  • MAS-3000-RCPL
  • CN-200,
  • CN-700
  • CN-3300

DNV has found that this product solution for planned equipment maintenance and new piping system designs complies with its standard for DNV Rules for Classification of Ships and DNV Offshore Service Specifications for onboard use on DNV-classified vessels, specifically:

  • DNV GL Rule for Classification- Ships Pt.4 Ch.6 Piping Systems
  • DNV GL-OS-D101- Marine and Machinery Systems and Equipment, Edition January 2018
  • DNV GL Class Programme DNV GL-CP-0185- Type Approval- Mechanical Joints

This certification allows Lokring customers to secure additional benefits, including lower overall project costs related to classification and certification.

DNV is the world’s largest classification society, providing services for 13,175 vessels and mobile offshore units (MOUs) amounting to 265.4 million gross tonnes, which represents a global market share of 21%. It is also the largest technical consultancy and supervisory to the global renewable
energy (particularly wind, wave, tidal and solar) and oil and gas industry — 65% of the world’s offshore pipelines are designed and installed to DNV’s technical standards.

See the DNV TA certificate.


This new certificate is an addition to Type Approvals for marine systems currently held by Lokring Technology with Lloyds and American Bureau of Shipping (ABS).

Contact your local autorized Lorking distributor for information on ordering Lokring DNV certified products.