The technology used by the manufacturer to produce seamless composite cylinders is based on a 3-part injection molding creating a cylinder that is safe, durable, solid and user-friendly. The manufacturing process is comprised of these main steps;

  • First, an inner liner of polyethylene (HDPE) is blow-molded.
  • Glass fibers and resin are then wound around the liner to create the pressure vessel.
  • To provide even greater strength and bring an element of design to the cylinder, we add an outer layer in the form of a polyethylene (HDPE) casing.


The entire manufacturing process is done in-house at the state-of-the-art manufacturing line located in Raufoss, Norway, in one of the most innovative and high-tech intensive industrial parks in the country. The process is fully automated – starting with the raw materials through to the completed cylinders on pallet ready for shipment, making our cylinders, the most efficiently-produced composite cylinders in the world.

 All steps in the value chain and all processes have been certified according to ISO9001-2008