Authors : Aswin

Volume/Issue : Volume 8 - 2023, Issue 6 - June

Google Scholar : https://bit.ly/3TmGbDi

Scribd : https://tinyurl.com/273sv3ej

DOI : https://doi.org/10.5281/zenodo.8070013

Abstract : This research aims to compare the wall thickness calculations for seamless, electric resistance welded (ERW), and submerged arc welded (SAW) pipes in steam piping systems, focusing on the ASME B31.1 code. The findings highlight significant disparities in wall thickness among these pipe types. Seamless pipes require a smaller wall thickness compared to ERW and SAW pipes due to the absence of weld seams. This eliminates weak points and reduces stress concentrations, allowing seamless pipes to achieve the required strength with a smaller wall thickness. In contrast, ERW pipes exhibit a slightly higher wall thickness requirement due to the presence of longitudinal and circumferential weld seams, necessitating additional thickness to ensure adequate strength and compensate for stress concentrations. SAW pipes generally necessitate a larger wall thickness compared to seamless pipes but have a lower requirement than ERW pipes, attributed to their manufacturing process. The presence of weld seams in ERW and SAW pipes introduces areas of potential stress concentration, requiring additional thickness. Consideration of manufacturing processes and weld seams is essential in determining the appropriate wall thickness for steam piping systems. Seamless pipes offer advantages in terms of reduced thickness and fewer weak points, while ERW and SAW pipes remain viable options based on specific characteristics and required strength levels. Future research should explore additional factors, including temperature, pressure, corrosion resistance, and project requirements, to facilitate informed decision-making for efficient, reliable, and cost-effective steam piping systems.

Keywords : Steam Piping System, Wall Thickness, ASME B31.1, Seamless, Electric Resistance Welded, Submerged Arc Welded.