Loading [MathJax]/extensions/TeX/ieeemacros.js
Prioritization of Pipe-bending Manufacturing Methods: An AHP-based Techno-Economic Comparison Between Welding and Cold Bending | IEEE Conference Publication | IEEE Xplore

Prioritization of Pipe-bending Manufacturing Methods: An AHP-based Techno-Economic Comparison Between Welding and Cold Bending


Abstract:

The welding of bends in the manufacture of bent pipes is a well-known method used worldwide. Cold bending is a competing manufacturing method and has its advantages and d...Show More

Abstract:

The welding of bends in the manufacture of bent pipes is a well-known method used worldwide. Cold bending is a competing manufacturing method and has its advantages and disadvantages. Cold bending shows great repeatability and can reduce the number of welds needed to manufacture a bent pipe, which can lead to time and cost savings, but the method has some limitations regarding pipe dimensions and bending radius. It is necessary to qualify the use of cold bending to manufacture piping bends for sour and/or low-temperature systems. Low-temperature carbon steel pipes cannot be cold-bent without subsequent heat treatment, as they lose their low-temperature properties. Techno-economic comparisons between welding and cold bending were carried out to identify the most appropriate manufacturing method. The analytic hierarchy process has been used in the analysis. Analysis and calculations revealed that cold bending has a significantly lower cost and fabrication time per unit than welding to manufacture pipe bends when post-bend heat treatment is not required.
Date of Conference: 13-16 December 2021
Date Added to IEEE Xplore: 19 January 2022
ISBN Information:
Conference Location: Singapore, Singapore

References

References is not available for this document.