AMIJACK GRP jacking pipes are centrifugally cast pipes made of polyester resin, glass fibre and silica sand. The raw materials are fed into a rotating mould in specified amounts in order to form a layered composite structure with a compact construction. The raw materials are precisely metered by a special feeder which adds the various materials in accordance with the design formula of the pipe being produced. This process creates a very compact composite structure, which is necessary and very important for jacking applications. The unique wall construction ensures the proper and safe use of pipes at the time of installation and during later operation.
AMIJACK pipes meet all the criteria of the EN-ISO 25780 standard, thus ensuring excellent quality and precision of workmanship. Amiantit’s quality system imposes specific procedures at every stage of pipe production from raw material control, through pipe production and ending with tests on the finished product.
The pipes are designed for the construction and renovation of underground pipelines using trenchless methods. They feature high ring stiffness and a coupling design in which the outer diameter is similar to the outer pipe diameter.
AMIJACK pipes are delivered in outer diameters between 427 mm and 2,453 mm. They are offered in standard lengths of 1, 2, 3 and 6 m. Other lengths are available on request. In addition, the pipes are available with different kind of couplings.