Tube In

Mandals Tube In is a strong circular woven hose extruded with a flexible polyethylene material (PE), developed for renovation of leaking drinking water mains. The weave is made from high tenacity filament polyester yarn and is covered inside and outside by the “extrusion through the weave” production method, giving an outstanding adhesion level to the PE-material as well as being firmly encapsulated.

The hose is packed in a “U-shape”, which in combination with high flexibility allows easy installation into the host pipe by pulling, even through sharp bends. No steaming is needed to inflate the hose afterwards. By recoupling and just setting the installed hose under normal water pressure, it opens up and expands towards the inner host pipe wall. Special end couplings are available on request.

Mandals Tube In is a semi-structural, stand-alone hose which will ensure continual water supply even if the host pipe should break.

Prior to installation all that is needed is a regular cleaning procedure of the host pipe by Polly Pig or other cleaning method.

The easy installation and short down period of the water supply make the Mandals Tube In a unique renovation system for drinking water mains.

Standard length is 200 meters. Longer lengths can be made on request.

Technical Data

Nominal Pipe Inner Diameter Hose Internal Diameter Wall Thickness Weight Burst Pressure Max Working Pressure Tensile Strength *
inch mm mm inch mm lbs/ft kg/m psi bar lbs kg x1000 lbs tons
3 80 69,5 +2,0 0,12 3,0 0,50 0,75 700 48 261 24 14,0 6,3
3,5″ 90 89,0 +2,5 0,13 3,2 0,74 1,11 550 38 275 19 18,0 8,1
4,5″ 114 113,0+3,0 0,13 3,3 0,99 1,48 465 32 232 16 21,3 9,6
5,5″ 140 136,0+3,0 0,13 3,3 1,10 1,65 465 32 232 16 26,4 11,9
8 200 189,0+3,0 0,15 3,8 1,83 2,75 465 32 232 16 65,8 29,6
10 250 228,0+4,0 0,16 4,0 2,60 3,90 465 32 232 16 81,8 36,8
12 300 271,0+5,0 0,17 4,3 3,17 4,75 465 30 232 16 99,5 44,8
* Total theorethical longitudinal strength.