surface defects on tubes

Important results from the project

Traditional acid pickling can provide a relatively high environmental impact and poor working environment. It was therefore important to investigate alternative methods for removal of oxides. The overall objective of the project TubeSurf was to identify and critically evaluate alternatives to traditional acid pickling for removing oxides on tubes and pipes. This goal has been fulfilled, several alternative methods have been evaluated and that the most promising methods have been identified.

Expected long term effects

New alternative techniques for removing oxides on pipes have been evaluated and the most promising technologies have been identified. This can reduce the environmental impact and provide a better working environment if these techniques prove to be implementable in existing production lines. Results from the screening of alternative techniques have been presented at a seminar where most pipe manufacturers were present. The results have also been presented in a final report and a proposal has been made on how a pilot study can be conducted with the most promising method shot-blasting.

Approach and implementation

The project TubeSurf was divided into four activities. Activity 1, a review of current methods to remove oxides on tubes. This was done by visiting each partner and with a survey. Activity 2, analysis of pipes from different process was performed to evaluate the surface quality achieved by current methods. Activity 3, alternative methods to pickling were identified and evaluated. The most promising method for each partner was identified. Activity 4, a proposal was presented on how a pilot study can be conducted with the most promising method shot-blasting.