CPC Vitrified Clay Jacking pipes are specifically designed and certified for micro tunneling according to BS N 295-7 standard. The Vitrified Clay Pipe and Joints for Pipe Jacking and ASTM C-1208 - Standard Specifications for Use in Micro tunneling, slip lining, Pipe Bursting and Tunneling. The joints consist of an elastomeric sealing element, a sleeve and a compression cushion ring. The allowable jacking strength capacity of pipes is capable of withstanding the maximum jacking forces imposed by the operations. Note: The Jacking pipes are produced on final contracts.