Polypropylene (PP) & Polyethylene (PE) Gravity Pipes

UPI manufactures Spiral Wound Gravity Pipes by using Bauku technology to produce these huge pipes for sea-water projects. The material and manufacturing technology can in fact be used to manufacture any diameter of gravity pipe up to 4000mm.

Applications include seawater intake and outfalls, storm water drainage, sewerage and industrial applications. Manholes and tanks can also be fabricated to particular requirements.


  • Sewerage
  • Stormwater drainage
  • Seawater intake & outfalls
  • Manholes
  • Silos
  • Water tanks
  • Industrial Applications


  • 50-year design life
  • Resistant to corrosion
  • Chemically inert
  • Welded joints
  • Very smooth
  • Light
  • Durable
  • Non-polluting
  • Resists UV attack
  • Non-toxic