HDPE LINING

HOW DOES IT WORK?

  • A string of High Density Polyethylene pipes are first butt fused together.
  • The HDPE liner rig, which incorporates a HDPE lining die, is set up at the insertion end, and anchored.
  • A compressor is used to blow in a slick line into the product pipe, this is then used to pull in the winch wire rope.
  • A winch, is set up and anchored at the receiving end to pull in the HDPE liner.
  • The HDPE Pipe string is pulled through the lining rig (Reducer), which temporally reduces the OD enabling it to easily pass through the host pipe.
  • The winch load is removed after HDPE liner’s full insertion
  • The HDPE liner revert to its original diameter and length forming a closed fit lining

HDPE LINING PROCEDURE

  • Select a suitable length of the host pipe
  • Clean the host pipe-drag scraping is sufficient.
  • Pull through the gauging (sizing) pig.
  • Undertake the HDPE lining operation
  • Allow liner to revert-typically 24 hrs.

BASIC PIPELINE CRITERIA

  • Ground & Longitudinal View
  • Host pipe Material, and Pipe Condition.
  • Pipe Length/s (underground /above Ground)
  • Pipe ID and Wall Thickness (WT).
  • Bends / radius of the bend as a multiple of the pipe diameter
  • Existing fittings, pipeline crossings that need to be taken into consideration (valves, hydrants, service connections).
  • Connection of the pipe shots
  • Existing manholes, concrete chambers along the Line.
  • Pipeline Operating Pressure, and Temperature.