Welna Andrén use different qualities vinyl ester, isophtalic and polyester resins in combination with various types of glass fiber reinforcement. We have in our product range also FRP with thermoplastic liner (PP, PVC, PE, PVDF) – so called Dual laminate system. The production methods include hand lay-up, filament winding, spraying and pressing.
We are used to calculate, construct and test our products according to standards and codes as EN 13121, AD-Merkblatt N1, ASME RTP 2000-1, PLN-83 as well as DIN standards for FRP pipe systems. Where necessary, we use FEM analysis.
– Platforms, railings
– Supports of steel or FRP
– Heat tracing
– ISO 9001
– ISO 14001
– OHSA 18001
We apply test methods, type and frequency of control according to the above standards and codes as well as taking into account national rules and customer’s requirements.
Welna Andrén offers a large variety of FRP tanks for storage of chemicals, waste water and drinking water:
• Vertical and horizontal tanks for use above ground
• Underground tanks
• Double wall tanks
Additional components as ladders, platforms, railings and supports for external equipment belong oft to the total scope.
Welna Andrén produces equipment for industrial fields such as pulp and paper, chemical processing, water purification and food industry. Products we make are among others:
• Pressure vessels
• ClO2 towers
• Electro filters
These products are normally provided with additional equipment as support rings of steel or FRP, agitators bridges, ladders, platforms, railings and different kinds of internals.
Welna Andrén is a supplier of gas ducts, chimney liners and stacks for many waste incineration plants and coal-heated power stations. FRP is a natural choice of material because it is used for scrubber and quench as well.