Extena is Sweden’s leading player in the development and manufacture of cable protection pipes within its product category. Our products have a significantly higher quality and ring stiffness than standard requirements and offer both more efficient laying, lower total costs and a safer service life compared to traditional laying of power cables in a sand bed. As more and more grid companies realize the benefits of cable protection, our business in this area has grown dramatically. Today we supply cable protection for both large and small projects across the country.

We offer cable protection pipes for class SRS and SRE-P. SRS (protection, pipes, difficult conditions) is our standard pipe that complies with SPF work standard 5200 and SP Technical Research Institute of Sweden’s inspection guidelines SPKB 1992:06, while SRE-P (protection, pipes, extra difficult conditions – plastic) is used for surface laying in difficult terrain. Our SRE-P pipes are manufactured according to SS 424 14 37. Both pipes are manufactured from high density polyethylene (PEHD).

Extena’s SRS and SRE-P cable protection pipes have a grooved interior to reduce friction when pushing through power cables. We see this as a big advantage. The use of cable protection pipes instead of a sand bed also provides more efficient propulsion, safer pipelaying and lower total costs.

Cable protection pipe SRS is also available with predrawn power cable N1XE-AR 4G25. We also offer cable protection pipes for optical fibre in standard dimensions and in the special dimension 40/29 with extra high ring stiffness.

Higher ring stiffness than standard
This is a big difference in the quality and ring stiffness of the cable protection pipes available on the market. The standard for the ring stiffness of cable protection pipe SRS is 8 kN, which in our opinion is far too low for pipelaying without a sand/rock flour bed. To ensure a long and safe service life, we manufacture our pipes with a ring stiffness of over 16 kN, in other words significantly higher than the standard.

Be aware that low price pipes are imported into the market that exactly meet the requirements for ring stiffness. There is a risk that these pipes will not withstand stress over time. However, with Extena cable protection pipes you can be sure that you will get a secure system with a long service life.

Quality at every stage
Our products undergo very thorough quality control, both in our own testing laboratory and at external inspection institutes. In this important task, we collaborate closely with the research Institute RISE. Another aspect of our quality assurance is that we have full traceability of the materials that we use.