Dimensional check of weld neck flange based on ASME B16.5

Authors

  • Fatima Sari Ritonga Politeknik Negeri Medan, Indonesia
  • Adi Syahputra Purba Politeknik Negeri Batam, Indonesia
  • Jefri Kemri Rodi Samuel Simanjuntak Politeknik Negeri Batam, Indonesia
  • Nurul Fadilah Politeknik Negeri Batam, Indonesia
  • Mutia Amalia Politeknik Negeri Medan, Indonesia

DOI:

https://doi.org/10.35335/computational.v14i2.268

Keywords:

Flange, Measurement, Weld Neck Flange

Abstract

This study aims to verify that the dimensions of a weld neck flange conform to ASME B16.5 standards. The flange used is a raised face type made of carbon steel ASTM A105N with 16-inch NPS, selected for its corrosion resistance, and welded with UNS 006625, a nickel-rich alloy that enhances corrosion protection. Dimensional checks were performed on five samples, each measured three times, using both visual inspection and measuring tools, including a roughness comparator and vernier caliper. Key dimensions measured include outside diameter (705 mm, tolerance +4 mm/-1 mm), inside diameter (333.3 mm, ±1.5 mm), bolt circle diameter (616 mm, ±1.5 mm), flange thickness (88.90 mm, +3 mm), and hub thickness (30.43 mm post-welding, with tolerance not less than 12.5% of pipe wall thickness) the visual inspection assessed surface roughness within the acceptable range of 3.2 µm to 6.3 µm. The inspection results showed that all measured dimensions were within the permissible limits, confirming that the weld neck flange meets the requirements of ASME B16.5.

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Published

2025-08-21

How to Cite

Ritonga, F. S., Purba, A. S., Simanjuntak, J. K. R. S., Fadilah, N., & Amalia, M. (2025). Dimensional check of weld neck flange based on ASME B16.5. International Journal of Mechanical Computational and Manufacturing Research, 14(2), 49–56. https://doi.org/10.35335/computational.v14i2.268

Issue

Vol. 14 No. 2 (2025): August: Mechanical Computational And Manufacturing Research

Section

Articles

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Copyright (c) 2025 Fatima Sari Ritonga, Adi Syahputra Purba, Jefri Kemri Rodi Samuel Simanjuntak, Nurul Fadilah, Mutia Amalia

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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

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