A Clear Workflow for Liquid Penetrant Examination in Heat Exchanger Headers
https://weld-quality-research.brightpathdigest.com/posts/weld-quality-audits-for-heavy-machine-frames-common-pitfalls-and-fixes
A Clear Workflow for Liquid Penetrant Examination in Heat Exchanger Headers Headers join tubes, nozzles, and thick plates with varied weld shapes. Penetrant testing can reveal open-to-surface flaws in suitable nonporous materials