QueenofPotsLiz

1.Introduction to Pipe Jacking method

Pipe Jacking is a trench-less method for installation of steel pipes and casings. Distances up to 30m (150 ft.) up long and up to 1,500mm (60-inches) in diameter are feasible, although the method can be used for much longer and larger installations. The method is the most useful for shallow installations under railway lines and roads, where other trench-less methods could cause surface settling or heaving. The majority of installations are horizontal, although the method can be used for vertical installations.

2.Advantages of Pipe Jacking method

Major advantages of Jacking Pipes are as follows:

1. High-axial strength for jacking force assurance
2. High crushing strength for load bearing capabilities
3. Smooth wall surface with very minimal frictional resistance
4. Accurately machined pipe ends for easy load transference of jacking force
5. EPDM elastomer sealing components and particle board thrust rings factory fitted. Particle board components tested as best material for load transference
6. Wide range of diameters available
7. Worldwide international project-supply references
8. International Technical and Commercial Support

3.Manufacturing process of Jacking pipes

Following is the entire process followed to manufacture a jacking pipe:

1.Locally-quarried raw materials are accurately blended before being

 ground to a fine form to enable subsequent extrusion. 

2.Clay raw material is mixed with water to give plasticity for

 extrusion. High-pressure extrusion ensures that a strong dense pipe  
 body is produced. Close attention to drying to remove moisture is 
 undertaken prior to firing under accurate temperature control.  

3.Use of special highly-insulated kilns is employed for attaining

 accurate firing. The special qualities of vitrification of the pipe  
 body are attained at a firing temperature in excess of 1050 degree 
 Celsius. 

4.After the firing and subsequent grading processes the pipe ends are

 accurately machined with computer-controlled diamond profile 
 cutters. Accurate production of parallel ends is also achieved. 

5.Intermediate inspection takes place as well as pipe ends being

 pressure tested to ensure integrity of pipe material.  The joint 
 components are then applied and materials are packed for shipment.

4.Trade Associations

1. British Board of Agreement (BBA): Technical Approval for Construction
2. BSI-Kitemark License
3. Investor In People

5.Renowned Manufacturer

1. Naylor Industries PLC.

6.References

1. http://web.engr.oregonstate.edu/~armin/index_files/Page432.html
2. http://www.naylor.co.uk
3. http://www.ukstt.org.uk/trenchless_technology/pipe_cables/
4. Pipe Jacking Association