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09-08-2016

New Generation of CPVC Welding Rod

Tested and Approved According to DVS Guideline 2207-3

Semi-finished products made from post-chlorinated PVC (CPVC) have been a reliable part of the material choice for sheets, pipes and fittings since 40 years in the global chemical engineering; in particular when the safe transport of corrosive media is concerned. Key technologies for connecting semi-finished products in both pure thermoplastics and dual laminates are rod welding and extrusion welding.

Post-chlorinated PVC: Thermomechanical and chemical resistance are crucial for CPVC products (© Lubrizol)

Post-chlorinated PVC: Thermomechanical and chemical resistance are crucial for CPVC products (© Lubrizol)

The CPVC welding rod is therefore an important component for the entire system from both the technical and strategic point of view. The highest achievable equality to the other CPVC system products with regards to thermomechanical as well as chemical resistance behaviour is the decisive attribute for the market acceptance.

Joint Development

Up to now – mainly for historical reasons – numerous different CPVC rod qualities have been used; a fact that required precise specification and control of its correct implementation. Legal requirements (e.g. REACH, the voluntary commitment of the European PVC industry) and the desire for further product improvement have contributed to the development of a new generation of CPVC welding rod: Lubrizol as raw material/compound manufacturer and the companies Georg Fischer DEKA and Simona as fabricators of semi-finished products have been successfully present in this market with CPVC for decades. In order to ensure the performance of the new welding rod generation in the relevant application areas and in order to get the dual laminate fabricators involved prior to its market introduction, the three companies joined forces in 2012 to cooperate in the development, qualification, field testing and market introduction of the new CPVC welding rod. As a result of these combined efforts, a new and well- defined CPVC welding rod can now be offered to the market.

Up till now numerous different CPVC rod qualities have been used. Now a new generation of welding ro has been developed (© Lubrizol)

Up till now numerous different CPVC rod qualities have been used. Now a new generation of welding ro has been developed (© Lubrizol)

The new CPVC welding rod has undergone both short and long term laboratory and field testing during the past four years to compare and evaluate the performance to other CPVC welding rods used so far. In 2014 and 2015 a major round robin test involving fourteen European fabricators has been organized to determine processing and acceptance. The results have been evaluated by an independent, accredited testing institute according to DVS guideline 2207-3.

The CPVC welding rod shows the following advantages:

  • Genuine system behavior with regards to corrosion resistance,
  • Compatibility with sheets and pipes used in this field of industry,
  • Matching and exceeding the performance of state-of-the-art CPVC welding rod products (e.g. in the area of wet chlorine, anolyte),
  • Clear product position and specification, harmonized color code with sheet and pipe exclude confusion in customer specifications.

It has been available from 1st August 2016 (in diameters of 3 and 4 mm) and can be obtained from the companies Georg Fischer DEKA and Simona.

Company profile

Georg Fischer DEKA GmbH

Kreuzstraße 22
DE 35232 Dautphetal-Mornshausen
Tel.: 06468 915-0
Fax: 06468 915221

Lubrizol Advanced Materials Europe B.V.B.A.

Chaussee de Wavre, 1945
BE 1169 BRUSSELS
Tel.: +32 2 678911
Fax: +32 2 678990

Simona AG Kunststoffwerke

Teichweg 16
DE 55606 Kirn
Tel.: 06752 14-0
Fax: 06752 14211

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