About Pretec Group

Pretec Group history goes back to 1985 when the first Pretec company was founded in Norway. Since then the company has expanded, slowly in the beginning, but more rapidly the last 10 years.

Pretec Group is the main shareholder in all their subsidiaries.

The group companies are manufacturing and supplying products for rock support and water & frost proofing of tunnels, slope stabilization, products for the precast industry, like cast in sleeves, lifting systems, sandwich/connections, welding plates, anchor channels, release agents etc. We also have a program for steel builders and mechanical workshops including tie rods, tension rods, foundation bolts, structural bolts, expansion bolts, hollow bolts, dowels, etc. Our network of dealers offers full on-site service to the general building industry.

Please check individual Pretec company webpages for local information since the details of product programs are adjusted to individual market needs.

Regarding international sales our focus is on rock bolts and self drilling anchors, all with long service life, besides combination bolts for rock support.

Where we are


Our history and key milestones

Pretec Group has developed through a long history since the first company was started in 1985. With an entrepreneurial spirit and constant strive for innovation and growth, the company is now present in several countries in Europe and the huge markets of China and India. The company has had growth almost every year up to now from when it was started in a garage with only one employee.

  • 2024

    Pretec Underground Pvt Ltd, India have finalized the construction of our new fusion bonded epoxy coating line.
  • 2023

    Pretec AB, Sweden moved to new premises. Warehouse, production and administration has together
    a total area of 11000 m2.
    Drillpipe AB in Sweden was acquired.
  • 2022

    Galvano Industrier AS, Fauske in Norway was acquired.
  • 2019

    Pretec Underground Pvt Ltd was established in India, Visakhapatnam, Andhra Pradesh.

    Pretec China (Zhejiang Pretec Metal Products Co Ltd) finished with installing a new high-temperature HDG facility. Added 2000m2 to the existing factory. The company has now 2 HDG lines.
  • 2018

    Received order from India for 1,2million meter of NC-Bolts M33, lengths up to 15m.

    Pretec AS, Norway moved to new premesis. Warehouse and adminstration has together a total area of 11500 m2.

    Visinor Import AS was acquired.
  • 2016

    Pretec China (Zhejiang Pretec Metal Products Co Ltd) moved to new factory of 20 000 m2. All processes are now under same roof, both mechanical production of rock bolts / acessories, fully autoamated HDG line (low temperature) and powder coating line.
  • 2015

    J. Penen & Co in Belgium was acquired. The company is a major European producer of stainless steel threaded rods. Also production of self drilling anchors.
  • 2013

    Pretec Finland Oy Ab was established in Finland, Siuntio in southern Finland.
  • 2010

    Pretec China (Zhejiang Pretec Metal Products Co Ltd) moved to new factory, 10 000m2. Mechanical production of rock bolts and powder coating.

    Pretec started to work in the tunnel industry with rock bolts and products for water and frost proofing.
  • 2009

    Pretec China (Zhejiang Pretec Metal Products Co Ltd) was established in China, Haining, Zhejiang province.
  • 2006

    Pretec AS, Denmark was established in Denmark, Køge, 40 km south of Copenhagen.
  • 2004

    Pretec Sweden (Pretec AB) was established in Sweden, Kungelv, 30 km north of Gothenburg.

    Changed name from Betongbolt AS to Pretec AS.The company has now increased the product range considerably. Foundation bolts are not any longer the main product for the company.
  • 1998

    Company is diveded in one holding company and one operational company.
  • 1989

    Betongbolt AS started to build up a range of products for the prefab industry.
  • 1987

    Received a huge order for foundation bolts from the Mongstad projets. Totally 32 000 pcs bolts were delivered in 1987/1988 in the range from M16 to M64. Everything in HDG execution.
  • 1986

    E.A.Karlsen Trading AS was sold and Betongbolt AS was established.

    Main products was foundation bolts and threaded rods.
  • 1985

    E.A.Karlsen Trading AS established in Norway, Sarpsborg, south east part of Norway. Starting with import of nails.