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ISO 11666:2018 ultrasonic testing acceptance levels for welds — complete guide by ASNT Level III expert, Trinity NDT Bangalore

ISO 11666:2018 — Acceptance Levels for Ultrasonic Testing of Welds: Everything You Need to Know

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By Ravi Kumar Thammana | ASNT Level III — UT, RT, MT, PT, VT, ET | IWE | NAS 410/ISO9712 Level III | CEO, Trinity NDT WeldSolutions Pvt. Ltd., Bangalore, India Let me start with something I tell every candidate who attends our UT Level II training in Bangalore. Knowing how to perform an ultrasonic […]

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When Is PWHT Mandatory for Carbon Steel Welds? A Welding Engineer’s Practical Guide

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By Ravi Kumar Thammana | IWE | ASNT Level III | CEO, Trinity NDT WeldSolutions Pvt. Ltd., Bangalore Published: March 2026 | Reading Time: 8 minutes Here is the complete blog post — written in the authentic voice of a 30-year welding engineering veteran: When Is PWHT Mandatory for Carbon Steel Welds? A Welding Engineer’s

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