Plastic Piping Systems in the Non-ferrous Metals Industry

The non-ferrous metals industry is very exacting with regard to materials and processes. Our pipes are used primarily where highly corrosive media are employed and where conventional materials would not be sufficiently resistant. STEULER-KCH's KERAVERIN® GRP composite pipe systems with thermoplastic lining are the product of choice in the industry for transporting process fluids used for leaching, clarification, gas treatment and acid production.

We develop, manufacture and install piping systems made from glass fibre reinforced plastic (GRP), either with or without a chemical-resistant lining, that are specifically tailored to the demands of the non-ferrous metals industry. We use the following thermoplastics as liner materials for our dual-laminate material systems:

  • Polypropylene (PP)
  • Unplasticised polyvinyl chloride (PVC-U)
  • Post-chlorinated PVC (PVC-C)
  • Polyvinylidene fluoride (PVDF)
  • Ethylene chlorotrifluoroethylene (ECTFE)

The name of our dual-laminate system is KERAVERIN®. These pipes comply with the applicable DIN standard 16965 part 2/ pipe type B..Our pipes without thermoplastic lining are covered under part 4/ pipe type D as GRP pipes with a chemical-resistant layer (KERAPOLIN®), or under part 5/ pipe type E as highly chemically resistant pipes with a high resin content (ALPHACOR®).

The operating temperature range is between -50 °C and approximately 200 °C, depending on the composite material used.

Our standard portfolio comprises products with nominal diameters from DN 25 to DN 1000, with the grading of the standard nominal pressure varying, depending on the nominal diameter, and starting at PN 16. We're well equipped to handle large nominal diameters too. We can fabricate items up to 5.5 m in diameter.

We can also supply flame retardant material systems suitable for use in areas with increased fire risk. Our pipes can be fabricated to be compliant with pressure equipment directives. We're also certified according to module H/H1.

STEULER-KCH's experienced specialists are there to provide you with expert assistance, from the initial consultation through to final assembly – in Germany and around the world. Our particular strength lies in consultancy: we work closely with our customers to select the combination of materials (liner, fibre reinforcement, resin matrix, etc.) best suited for the chemical, mechanical and thermal stresses expected in the plant. We develop custom combinations of materials in close consultation with our customers from the non-ferrous metals industry.

The range of services we offer includes a plausibility check regarding design and materials and project support to ensure smooth and timely implementation, even for complex projects. We're flexible: alteration and customisation of the supplied pipes is possible at any time – even following delivery. Our after-sales service gives our customers the opportunity to share their experiences of completed projects, to learn about current product developments and if desired, to have the installed products inspected and evaluated.