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Model Krah Pipes -High-Performance Plastic Pipe
The high-performance plastic pipe production technology by Krah Made in Germany. Leak free, sustainable, homogenous and flexible Krah Pipe System. Since generations the mankind is busy by transporting water/sewer or any other liquids from one point to another point. The challenge was always to assure a conveyance system without fails and leakage. Most pipe failures were occurring on the joints through corrosion or cracks on the rigid inflexible pipe material. Over the last decades, the inherent weaknesses of concrete, clay, ductile, PVC and steel caused tremendous problems in existing water supply, sewer pipes systems, as they tend to be brittle or are too sensitive for aggressive chemicals and soil conditions. Leakages have become a common occurrence worldwide in water, sewer and other large diameter pipe applications. In addition, they have an unprofitable relationship between cost and benefit due to short life time and high maintenance costs.
Krah Pipes are made out different grades of pure Polyethylene or Polypropylene who are providing superior properties against corrosion, leakage, pipe displacement and ex-infiltration. In addition to the permanent solution that lasts through generations, the Krah piping system is able to provide a sustainable, environment friendly and economical solution with its wide-ranging fields of applications, f.e. water supply, sewer systems, drainage, storm water management, sea outfalls/intake, manholes and reservoirs.
In order to meet the demand of the at least 100 years leak free, sustainable and flexible pipe system, Krah Pipes are produced with an integrated electro fusion joint system, which assures a melting of the pipes to a homogenous and monolithic pipe system.
Krah Pipes can be produced from the following thermoplastic materials:
Other materials can be used after prior acceptance of the producer and a third party for quality control.
Krah Pipes are made from HD-PE100 (acc. to DIN16961, EN13476, ASTM F894, ISO9969 and other intl. standards) are produced with an integrated electro fusion joint socket and spigot. The pipe is completely helically extruded with profiles or solid wall, tailor made for any kind of application within the standards. The pipes have no welding seams or any weak points and are completely monolithic made from high density PE100. There is no recycled mixed material used, to assure an excellent quality of the pipes which is assuring the service cycle of minimum 100 years.
These are adaptable to the following listed jointing technologies. As various tests and decades of experience have shown, the jointed part of a pipe system is usually the most vulnerable part. Here, the pipe is mostly exposed to possible leakages. The Krah system offers a well-known connection method developed further for large scale application which eliminates these concerns by guaranteeing a solid homogenous pipe line.
System shafts are used for smaller dimensions whereas tangential shafts are used for rather larger dimensions. They basically differ in their position/location towards the pipe.
All Manholes are designed in a cylindrical shape. They are designed to take full highway traffic load (HLC60) where the reinforced concrete top plate rests directly onto the vertical wall of the construction. PEHD Manholes and chambers can also be installed in areas of high ground water levels.
The co-extrusion provides an inspection- friendly, bright inner surface and at the
same time a long term UV-resistant outer surface (for example for the storage
of pipes outside for a long time).
Krah pipes can be produced steplessly at intervals of 100mm with
Krah pipes can be produced steplessly at intervals of 100mm with
internal diameters (ID) ranging from DN/ID 300mm to DN/ID 5000mm. The nominal
diameters (DN) coincident with the internal diameter (ID) of the
pipe, because in case of any change in the design of the pipe the
wall thickness can be increased or reduced while the internal diameter
remains the same.