Thin Wall Concrete Pipe Production Machine
Precise control of concrete production combined with the BiDi process to produce high quality, vertically cast thin wall pipe that exceed the requirements of thin wall standards.
The BiDi Process
The BiDi process is an automatic, precise operation. The Bidirectional pipe machine is controlled by Vision 3 automation, a solid-state electronic control system requiring no machine operator. The result is a high output of consistently superior quality pipe. The automatic process further ensures accurate dimensions on joints and trouble-free joint performance.
The BiDi® process produces steel reinforced concrete pipe suitable for traditional thin wall pipe markets. The proven roller-compacted process achieves high concrete compaction through use of a unique computer-controlled counter-rotating rollerhead and trowel. The action of the assembly eliminates torsional stresses in the green pipe and finishes internal bores to an exceptional standard. This ensures the finished product will meet worldwide thin wall pipe specifications including those from Australia, New Zealand and Japan. The BiDi process utilizes a low water/cement ratio concrete to produce pipe with high strength, low permeability and excellent abrasion resistance.
A proven production innovation is the use of patented form-mounted pneumatic cage positioners for proper placement of the steel reinforcing. Use of the cage positioners improves hydrostatic testing and overall pipe durability while eliminating the need for plastic and/or steel spacers to locate the cage. Thin wall pipe produced by the BiDi process have successfully passed all required D-load (external load) and hydrostatic tests, with absorption typically testing at 3-4 percent.
Besser has a proven gasket joint concept for thin wall pipe that will accommodate several gasket designs. In particular, the design of the new D-gasket has virtually eliminated certain field installation problems as the gasket is easy to place on the pipe and requires no lubrication. The result is positive jointing with the joint and gasket remaining intact during and after installation in the trench. Other gasket designs for thin wall pipe include O-Ring, teardrop and profile. Designs for flush joint pipe are also available.
Using the new gasket joint concept, the pipe is centered by minimal concrete-to-concrete annulus and no longer relies on the gasket for centering. The gasket remains circumferentially in place and under compression at all times, eliminating joint leaks.
Excellent Concrete Compaction
For strength and performance.
High Production Output
To allow producers to respond to market demands.
For greater product consistency.
Precise Joint Details
To ensure performance under all field conditions.
Proven ease of installation.
Superior Pipe Finish
For improved hydraulics.
From thin wall production capability.
No Reinforcement Spacers Required
For improved test results and durability.
Environmentally Friendly Process
For a cleaner workplace, reduced noise levels and elimination of slurry pits.
Different Joint Designs
To meet market demands. Designs include flush joint, profile gasket, confined O-Ring, D-Gasket – Rolling O-Ring – Teardrop.