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Rules and Standards for large plastic pipes

In the following abstract an overview is given about the basic rules and standards for large diameter plastic pipes. The main focus made from German/European view on the thermoplastic pipe materials Polyethylene and Polypropylene.

In the list the standards are marked according their relation to:

  • General
  • Polyethylene / Polypropylene
  • Raw material properties
  • Pipes
  • Fittings, Assemblies
  • Manholes
  • Jointing

It is of prime importance for the industry to be geared to the established standards.
Without adequate standards there would be no orientation on the free market. This concerns designer, planer, fabricators, operator, testing institutes as well as the manufacturers and his quality management. Of course this does apply also for large diameter thermoplastic pipes. Especially, because thermoplastic materials are with around 70 years of experience still a young material group, which results in immense drive and innovation.

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5th Krah Community Meeting


From 3 to 6 June 2014 the 5. Krah Community Meeting (KCM) took place. The group of 30 participants, consisting of customers, potential parties, external technical consultants and Krah employees met in Tallinn, the capital of Estonia, in order to discuss about new projects and developments. In total 12 different nationalities were present.

The 5th Krah Community Meeting took place in Tallink Spa & Conference Hotel in TALLINN / Estonia

The 5th Krah Community Meeting took place in Tallink Spa & Conference Hotel in TALLINN / Estonia

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PE100 Solid wall for marine pipeline

The following abstract provides a brief description of the Al Ghubrah Project with information regarding installation of Large Diameter Marine Intake and Outfall Pipelines, especially regarding the typical work phases: Survey, Design and Construction.

The Al Ghubrah Desalination Project is formed under the Independent Water Project Scheme in Muscat, Sultanate of Oman. The project is sponsored by Muscat City Desalination Company SAOC (MCDC); contracted to the joint venture M/s International Water Treatment Co LLC (formed by WABAG, CADAGUA, & GALFAR). The project is located approximately 20 Kms on the eastern side of Muscat city. The Intake and Outfall Pipelines are produced locally as solid wall Krah-Pipes at United Gulf Pipe Manufacturing Co LLC based in Rusyal Industrial Estate, Muscat, Sultanate of Oman.

Google Earth Top view March 2014 during Installation

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Performance of PE pipes with glass fiber

M.Tokiyoshi1), H.Kudo1), M.Endo1), K.Inoue1)
N.Shibasaki2), T.Nakayama2), H.Matsukuma2), M.Kodera2)
Y.Niinomi3), M.Masuko3)
1)High stiffness Polyethylene Pipes Association, JAPAN
2)Tokyo Electric Power Company.,Inc , JAPAN
3)Tokyo Electric Power Service Company.,Ltd, JAPAN


Polyethylene pipes are successful worldwide due to the superior performance (Flexibility, light weight, lifetime, tighten joint) for water and sewerage supply. However according to our ISO standard concerned Polyethylene pipes we have to use solid wall pipe with too thick against for internal pressure. The major job challenge involved finding new polyethylene solution with best high modulus and flexibility such as superior performance of polyethylene for world customers. In achieving this, polyethylene resin with glass fiber by spiral cross winding method take us new.
Our technical team should be considered a better option (characteristics of basic) not only those tests but also it was extra performance with proof of some analysis in Japan.

Glass Fiber reinforced pipes on-site
Glass Fiber reinforced pipes on-site
Concrete edging
Concrete edging


PE pipes have been successfully used for water distribution pipelines around world for many years. Those pipes are generally made with solid walls because of strong deflection of the pipe during terms of service. This is necessary to need over hundred mm thickness in case high internal pressure especially for large diameter pipe. This paper provides technical characteristics and discusses solid wall pipe applications with Polyethylene and Glass fiber. It combined high E-modulus and many benefits of polyethylene. HIPPA as High stiffness Polyethylene Pipes association established 1987 are operated by DAINIPPON PLASTICS, NIPPON HAWER, TORIIKASEI,
PRIME POLYMER and MITSUI CHEMICALS INDUSTRIAL PRODUCTS in Japan. We should know what we are those basically characteristics concerned Plastic piping systems made from glass fiber reinforced polyethylene (PE-GF) for water supply and for drainage and sewerage.

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New world record by Krah technology

PE 100, DN/ID 3600 mm, SDR 17 in Buenos Aires, Argentina

Alexander Krah (Dipl.-Kfm.), Krah AG, CEO
Ralf Schnitzler (Dipl.-Ing.), Krah AG, Business Development Director

1. Preface

Water distribution and water usage have been in the focus of the authorities and the civil society of Argentina for many years. From an infrastructural point of view this issue raises complex problems, which have emerged through several changes between privatization and communization over several decades. The incomplete supply of numerous households with fresh drinking water such as safe sewage water connections are obvious results of these which need to be faced and solved. To address these shortcomings, especially in the metropolitan area of Buenos Aires, the Argentine government has launched the major project: Planta Potabilizadora Juan Manuel de Rosas.

Within this major project, river water is taken out from two rivers and transported into the water treatment plant in the north of Buenos Aires. The treated water will mainly benefit the districts of Tigre, San Fernando, San Isidro, Vicente López and San Martín. The water treatment plant will provide fresh drinking water for two million residents. The river’s name from which the project section we have been working in took its resources is Parana de las Palmas. It is an inlet flow of the great river Rio de la Plata close to Buenos Aires.

Two overviews of water treatment plant in Tigre, Argentina (Aguas del Paraná)Two overviews of water treatment plant in Tigre, Argentina (Aguas del Paraná)

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