Technical documentation

We constantly strive to be at the forefront in both environment and quality in Sweden and internationally.

Other certificates and documentation

Other relevant documents for downloading can be found on the Rundvirke Group’s common document base.

Document database

Nordic Wood Protection Council NTR

Rundvirke Poles AB is a member of the Nordic Wood Protection Council NTR and manufactures poles according to their rigorous quality requirements and according to wood protection class NTR A-Pole. We have the right to mark the impregnated poles with the quality mark NTR A-Pole. It also means that the wood meets penetration class NP5 according to SS-EN 351-1, i.e. full penetration into the sapwood and has an uptake of wood preservatives according to NTR approval for wood protection class A-Pole.

For impregnating agents approved by NTR, please refer to


Rundvirke Poles meets the requirements according to SS-EN 351-1 and NTR “Nordic wood protection classes and product requirements for impregnated wood”. We are authorized to label our products in accordance with the Nordic wood protection classes.

Rundvirke Poles also meet the requirements to CE mark in accordance with the standard EN 14229: 2010. “Certificate of conformity of the factory production control 2412-CPR-1115-01” for the Ludvika factory and “Certificate of agreement for factory production control 0402-CPR-SC1329-13” for the Kälarne factory.


Our production and self-inspection are subject to control by RISE “Research Institutes of Sweden AB” and Finotrol Oy. The production monitoring includes, among other things, determination of penetration and uptake of the impregnating agent in the sapwood and monitoring that the agent meets the appropriate specification.

ISO certification

Rundvirke Poles has a management system for quality that meets the requirements according to SS-EN ISO 9001 and a management system for environment that meets the requirements according to SS-EN ISO 14001. Rundvirke Poles’ management system is certified according to ISO 9001 and ISO 14001 as regards the manufacture, sale and delivery of impregnated power line poles, telephone poles, sleepers and other wood products.

Other certification

The company is also qualified as a supplier to Achilles and Nordic transport organisations according to Trans Q.

PEFC traceability certificate

Rundvirke Poles receives its raw material delivered from the group company Rundvirke Skog, which holds a traceability certificate PEFC, they are also certified according to FSC.

Production monitoring

During the production process, we make many quality checks. Before impregnation, we check the straightness, the presence of knots/knot turns, growth twisting, etc. We also check the moisture ratio, which may not be more that 28% v/v before impregnation. After impregnation, the penetration and uptake of the impregnating agent into the sapwood is checked. Prior to delivery, the surface dryness of the creosote-impregnated products is also checked.


Our products are manufactured in accordance with the most common Swedish and international standards, for example:

  • EN 351
  • NTR krav
    – NTR doc 1 part 1, 2 and 3
    – NTR doc 2 part 1 and 3
    – NTR doc 3 part 1, 2 and 3
  • EBR Impregnated Wooden Poles IN063
  • SS-EN 50425 (1-45kv)
  • SS-EN 50341 (>45kv)
  • EN 14229
  • AWPA C4
  • ANSI 05.1
  • ANSI 05.1a

Rundvirke Poles is certified according to industry standards and we constantly develop our environmental and quality work.