Plastic Piping Systems in the Mining Industry

The mining industry needs highly resistant piping systems for transporting the acids used in processing and storage facilities. The copper extraction process, for instance, uses high temperature sulphuric acid that would corrode conventional materials in next to no time.

STEULER-KCH is the specialist when it comes to pipes made from glass fibre reinforced plastics that are used wherever highly corrosive media must be handled. The portfolio of services we offer covers the design, manufacture and installation of glass fibre reinforced plastic pipe systems (GRP), both with and without a thermoplastic lining. We primarily use the following thermoplastic materials as a liner material for the lining:

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

Pipes lined with this material comply with the applicable DIN standard 16965 part 2/ pipe type B. The dual-laminate material is known as KERAVERIN®. As GRP pipes with a chemical-resistant layer (KERAPOLIN®), our pipes without thermoplastic lining are covered under part 4/ pipe type D.

The operating temperature range is between -50 °C and approximately 200 °C, depending on the composite material used. We can naturally also supply flame retardant  material systems suitable for use in areas with increased fire risk.

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

Naturally, we can also supply electrically conductive material systems suitable for use in areas subject to explosion hazards. Our pipes can be fabricated to be compliant with pressure equipment directives. We are 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 in the mining 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.