1. Steel Wire Mesh Reinforced HDPE Pipe Roobuck Pty Ltd

2. Pipe Structure Every cross of steel wires is welded HDPE Steel wire mesh

3. Fitting Structure HDPE Steel Skeleton

4. Connection Structure Coupler inside diameter = Pipe outside diameter Pipe 1 Electrofusion Coupler Pipe 2 Jointing surfaces are melted using Electrofusion Machine

5. Performance Comparison to Normal PE Pipes NOTE: Normal PE pipe: DN # is defined as outside diameter. Roobuck PE pipe: DN # is defined as Inside diameter. For comparison, Roobuck DN # must be converted into outside diameter for the same DN # of normal PE pipe

6. Example: Normal PE PipeRoobuck Pipe (outside D: 280)(Outside D: 275) 1) Large inside section area

7. 2) Less weight for pipes >DN200 So: -- Easy installation -- Less support for raised pipeline

8. 3)High pressure Up to PN40 (4MPa) DN50DN65DN80DN100DN125DN150DN200DN250DN300DN350DN400DN450DN500DN600 PN15 XXXXXXXXXXXXXX PN12.5 XXXXXXXXXXXXXX PN16 XXXXXXXXXXXXXX PN20 XXXXXXXXXXXXX PN25 XXXXXXX PN30 XXXXX PN35 XXX PN40 XXX

9. 4)Better long-term hydrostatic strength Most internal stress is born by steel mesh so HDPE is released

10. Steel wire mesh hold HDPE together (Every cross over of the wire is welded) 5)High Rapid Crack Propagation Resistant and Environment Stress Crack Resistant

11. 6)Higher environment temperature When temperature rises, PE strength is reduced quickly, but steel only changes very slightly in the range of 0- 100 o C.

12. 7)Flexible along pipeline -- Steel has much higher elasticity modulus -- Steel mesh configuration makes it flexible in the axis direction Suitable for curved pipeline

13. 8)Smooth inner wall in low resistance Bead No bead Hot PlateElectrofusion for normal PE pipeFor Roobuck pipe

14. 9)Very strong connection 9.1) Much larger welding area Normal PE pipe: welding pipe wall section Roobuck Pipe: Welding pipe surface

15. 9)Very strong connection 9.3) Steel skeleton reinforce for fitting Steel skeleton is stronger than steel mesh Connection is stronger than pipe itself ! 9.2) Double wall thickness at welding area Electrodes to Steel skeleton generate heat

16. Installation Comparison to Normal PE Pipes

17. 1) Less weight of pipes -- Most pipes can be moved in hand -- Easy transportation 2)Less weight of welding machine Can be carried in hand – about 20kg 3)Less welding time Total welding time about 30 min 4)Easy for high rising installation Welding machine is on the ground and only wires connect to coupler

18. 5) Multi-point installation No need to wait for cooling to go to next point 6)Easy operation of welding machine Automatic setup and simple menu 7)Reliable Less effect from dust, raining or wind All installation data are saved in USB 8)Less man power Significantly less labour cost 9)Less fuel consumption Small generator and crane

19. Cost Comparison To Normal PE Pipes 1) Lower pipe cost -- Use smaller pipes owing to large inside section area -- Use smaller pipes in high pressure 2)Lower installation cost Easy and quick 3)Lower maintenance cost -- Pipe reliable, robust and long lifetime -- Traceability: steel is easy to detect -- Simple repairing using electrofusion

20. Typical Applications -- Transportation of Ore Pulp and Tailings -- Transportation of Corrosive Materials in Mining, Metallurgy, and the Chemical Industry -- Transportation of Water under high Pressure. -- Transportation of Oil and Gas -- Special environment such as high temperature, curved pipeline, vibrating area, etc

21. Project Pictures