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51313-02176-Laboratory Methodologies to Evaluate the Compatibility Between Mainline and Girthweld

Picture for Laboratory Methodologies to Evaluate the Compatibility Between Mainline and Girthweld
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Product Number: 51313-02176-SG
ISBN: 02176 2013 CP
Author: Sankara Papavinasam
Publication Date: 2013
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$20.00
$20.00

Most modern mainline coatings are applied on the pipeline in the mill where establishment of quality of application is easy. On the other hand the girthweld coatings are applied in the field where establishment of quality of application is difficult. In order to properly protect the external surface of oil and gas pipeline both mainline and girthweld coatings should be compatible with one anther.

In this paper the compatibility between twelve girthweld coatings with four mainline coatings have been evaluated using cathodic disbondment (CD) impact flexibility pull adhesion peel and hot-sock adhesion tests. The test panels had both mainline and girthweld coatings and were prepared by removing a portion of previously applied mainline coating and applying a girth weld coating. Before performance testing the panels were exposed to four different temperatures for four months. Relative rankings on the compatibility between twelve girth weld coatings with four mainline coatings have been established.
 

Most modern mainline coatings are applied on the pipeline in the mill where establishment of quality of application is easy. On the other hand the girthweld coatings are applied in the field where establishment of quality of application is difficult. In order to properly protect the external surface of oil and gas pipeline both mainline and girthweld coatings should be compatible with one anther.

In this paper the compatibility between twelve girthweld coatings with four mainline coatings have been evaluated using cathodic disbondment (CD) impact flexibility pull adhesion peel and hot-sock adhesion tests. The test panels had both mainline and girthweld coatings and were prepared by removing a portion of previously applied mainline coating and applying a girth weld coating. Before performance testing the panels were exposed to four different temperatures for four months. Relative rankings on the compatibility between twelve girth weld coatings with four mainline coatings have been established.
 

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