Resources
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Technical Articles
FABTECH 2026 Update: Finishing Teams Prepare for October 21–23
FABTECH’s October 1 update confirms the upcoming Las Vegas event. Here are the verified details and practical coating inspection questions for finishing teams.
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FAQ
Coating Thickness Standards FAQ: Method, Sampling and Acceptance
Match coating thickness standards to the coating and substrate, then document the required edition, sampling plan, acceptance limits and verification records.
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FAQ
Coating Measurement on Non-Metallic Substrates FAQ
Coatings on concrete, wood, plastic, glass and fibreglass can only be measured by ultrasonics (ASTM D6132-13(2022) / ISO 2808); the matching Dongru models are…
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FAQ
Ultrasonic Thickness Measurement FAQ: Coupling, Sound Velocity and the Echo-Echo Mode
Ultrasonic thickness measurement converts thickness from echo time, so coupling quality and sound-velocity setting decide reading reliability. The Echo-Echo penetrating mode measures substrate wall…
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FAQ
Measuring Range FAQ: How Large to Choose, What to Do When Over-Range
Range selection is based on the 80th percentile of typical thickness, keeping it in the 20%-80% band; once over-range the reading enters a non-linear…
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FAQ
Accuracy and Calibration FAQ: Questions About Reading Trustworthiness
An accuracy expression has a proportional term and a fixed term; you must convert it to a specific thickness point to compare. Calibration is…
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FAQ
Substrate Identification FAQ: Fe, NFe and Three Substrate Classes
Identifying the substrate takes three steps: magnet test, material confirmation, geometry check. Ferromagnetic substrates use the magnetic method, non-magnetic conductive substrates use eddy current,…
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FAQ
Coating Thickness Gauge Basics FAQ: 20 Most-Asked Questions
A coating thickness gauge non-destructively measures the thickness of a coating on a metallic or non-metallic substrate. Which principle applies depends on the substrate…
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Industry Applications
Ultrasonic Thickness Measurement of Cast Iron: A Sample-Test Plan
Plan cast-iron wall-thickness measurement with a representative sample, verified sound velocity and a probe setup that returns a usable backwall echo.
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Industry Applications
Coating Thickness on Stainless Steel: Choosing Fe or NFe Mode
Choose coating-thickness measurement on stainless steel by its magnetic response, then verify the gauge on a representative uncoated sample.
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Measurement Methods
12 Coating Thickness Checks Before Accepting Readings
Use twelve field checks to confirm the method, substrate, instrument verification, probe contact, sampling and records before accepting coating readings.
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Measurement Methods
Paint over Galvanized Steel: What a Gauge Actually Measures
A conventional magnetic gauge may respond to both zinc and paint over steel. Learn how to plan a paint-only measurement and when a duplex…