Polypipe WMS re-engineers original specification for Northumbrian Water flood alleviation scheme based on Ridgistorm-XL’s proven performance and Krah electro-fusion jointing
It has the ability to arise after several hundred years and from its own ashes, reborn anew to live again. But what are the benefits to keep this same appearance and properties over and over again while the given conditions and demands change steadily? Evolutionary? Probably not – It’s time for a new PHOENIX!
|The company Krah – market leader for helical extrusion technology – has developed a 13 meter long mandrel for production of helical extruded pipes. With this innovation customer can manufacture in one cycle pipe length of 12 meter now. At first Krah offer this innovation for PE and PP pipes from DN 600 up to DN 3000, but bigger dimensions are also possible. In the past the standard length of such mandrels was 7 m, so that production was limited to 6m pipe length. Now the tooling time can be reduced by 50% and the production method becomes even in pipe weight more efficient than before.
As known from the 7 m tools it is still possible to integrate socket and spigot directly at the end of the pipes.
For every customer who bought in the past a production line for 6 m pipe length production Krah offers an complete upgrade for existing machines and mandrels. Krah has developed a special procedure for extending the old 7 m long mandrels to 13 meters. Even railway and electrical devices can be changed.
English version of DIN SPEC 19674 for Krah PE-GF pipes is now available
From now on the
"Plastics piping systems made from glass fibre reinforced polyethylene (PE-GF) for water supply and for drainage and sewerage under pressure / Part 1: General" / "Part 2: Pipes"
is available in english. The official documents can be ordered under www.beuth.de
Beuth Verlag GmbH, 10772 Berlin, Tel 030 2601-2260, Fax 030 2601-1260, Web:
The German Standard DIN SPEC 19674 has successfully passed the board of DIN committee and is already published in German language - the according English translation will be available short termed.
Header of the document:
Plastics piping systems made from glass fibre reinforced polyethylene (PE-GF) for water supply and for drainage and sewerage under pressure
Basis for this document was the international Standard ISO/CD 29561. Krah AG values this as an additional and very important step on the way of implementation of KPPS pipes to the international pipe market.
* The general safety design coefficient C is 1.6, but also other values can be used when there is an agreement between manufacturer and end-user. The minimum value for C is 1.25
* Diameter of Pipes from DN/ID 300 up to DN/ID 4000 mm are included
* Attachment regarding the perfect ringstiffness and modulus of elasticity, for using KPPS even as drainage / sewer pipe
How can we manage the International Standard of PE-GF pipes?
Our strategy is that our customers / partners established similar national standards and specifications in their own countries. The more national standards we have implemented in the world, the more influence we will have also on international level.