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.