KDR production line

KDR production line

The high performance plastic pipe production technology by Krah Made in Germany

The KDR Series is a twin screw helical extrusion line of Krah, which is a complete plastic pipe production plant, to produce structured wall (acc. DIN16961 etc.) or solid wall pipes by using fillers like CaCo3/Glassfibre etc., on internal diameters from DN 300 mm up to DN 5000 mm made out high density polyethylene/polypropylene, reinforced/mixed with glassfibre or CaCo3.

Glassfibre reinforced polyethylene (PE-GF)

Polyethylene/polypropylene with filler material

Virgin polyethylene or polypropylene

In a huge market of competition, cost savings by using filler materials becomes more and more important for pipe manufacturers. The production technology with the twin screw extruder is compounding filler material with the polyethylene or polypropylene to assure the same stiffness or pressure rate compared to traditional produced pipes.  The glassfibre reinforced polyethylene pipes (PE-GF) are mainly used for pressure pipe application and pipe jacking. The compound with filler material are used to increase the stiffness significantly for buried pipe application. Production line can be equipped for solid wall production only as also for profiled wall structure pipes.

Main Features

The main advantage is the reduced wall thickness for pressure pipe applications up to 40% and the material stiffness for buried pipe applications can be increased up to 200%.

As a result, a huge efficiency in production costs can be achieved to increase the benefit.

ApplicationMaterialOutputPipe diameterPipe lengthPlace requirementStandardsTechnology
  • Pressure Pipes
  • Jacking Pipes
  • high stiff pipe systems for gravity pipes
  • Polyethylene:
    • PE 80, PE 100, PE + Glassfibre, CaCo3 or other filler material
  • Polypropylene:
    • PP-H, PP-R, PP-S
  • 800 kg/hour with PE-GF (Polyethylene with Glass Fibre)
  • 1000 kg/hour with PE (Polyethylene)

300mm - 5000 mm

up to 6 meter

20 x 30 meters

  • ASTM F2720DIN SPEC 19674-1
  • DIN SPEC 19674-2
  • PE-GF200
  • and for gravity/low-pressure
  • ASTM F894
  • DIN 16917
  • DIN 16961
  • EN 13476
  • ISO 21138
  • JIS K 6780
  • NBR 7373

Krah Comtruder Technology

Contact Us

  • Krah Group
  • +49 (27 41) - 97 64 0
  • info@krah.net
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