Krah Pipe

   Krah pipe with various stiffness classes which are designed for utility and industrial applications. It is made from High Density Polyethylene (HDPE) or polypropylene (PP) to manufacture these pipes. The diameter of Krah pipe is from DN/ID300mm to DN/ID 4000mm. 

ADVANTAGES of Krah Pipe

· Pipe Weight

The extremely low weight of Krah pipe allows a simpler and faster installation of the pipes, as in most cases no heavy machinery is necessary for the installation and handling of the Krah pipe. Most of the handling can be done by an excavator on-site.

· Enviromental and long life time

 Low investment costs and a service life over 100 years reduce the operating costs.

· Jointing

Krah pipe are joined either by rubber ring joint or electro-fusion.

· Installation

The installation time is faster than other materials as the standard Krah pipe lengths are between 5.5 to 6 meters long.

  

· Transportation

As it is possible to nest these Krah pipe, transportation costs can be reduced.

· Chemical and Corrosion Resistance

Krah pipes and fittings are made of the same material and jointed to one homogenous piece. Not even connections between the pieces pose a weak spot in the piping as they are joined by a rubber ring or electro-fusion water tight joint.

· Homogenous Piping

Krah pipes and fittings are made of the same material and jointed to one homogenous piece. Not even connections between the pieces pose a weak spot in the piping as they are joined by a rubber ring or electro-fusion water tight joint.

· Effective Roughness

Due to its low roughness as shown in the above graph there is almost no accumulation on the pipe bottom and Krah pipes have the ability to self purify. Low roughness has an important economic advantage as maintenance expenditure is kept to a minimum. Due to the low roughness the hydraulic properties are improved and smaller diameters are required compared to conventional pipe materials with the same flow rate. Krah pipe convey flows up to 17% greater than concrete pipes, and up to 60%better than corrugated steel pipes.

· Abrasion Resistant

Krah pipes are among the most abrasion resistant pipes. This has been tested in the Darmstadt procedure and the results are shown in the diagram above and support the quality of polyethylene and polypropylene pipes.

· UV-Resistant

Commonly most natural materials and other plastics are degraded by weathering effects, particularly by the combined impact of short-wave ultraviolet radiation in sunlight and atmospheric oxygen. Black polyethylene sprial pipes are permanently resistant to atmospheric corrosion and UV radiation, as the polyethylene used contains carbon black which acts as both a pigment and an ultra violet stabiliser. Thus the Krah pipes can be used and stored outside without the Krah pipe material being damaged.

· Resistant to Micro Organisms

Polyethylene or Polyproplene is not nutrient media for bacteria, fungi and spores, so that the material is resistant to all forms of microbial attack as well as both sulphurous acid and sulphates.