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A loading dolly is bonded to the surface with a high-strength adhesive. Curing: The adhesive is allowed to cure fully.

This makes ISO 16276-1 and contract compliance verification than ISO 4624 alone, which lacks these acceptance frameworks.

Boundary failure between the substrate and the first primer coat. Cohesion Failure

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: Establishes rules for determining if a coating "passes" based on contractually agreed-upon fracture strength values.

The standard applies to protective paint systems applied to steel structures. It is designed for use both in the workshop (shop application) and on-site during field installations. It is typically utilized for coatings with a total dry film thickness (DFT) greater than 250 micrometers (

A numeric value alone is insufficient under ISO 16276-1. Inspectors must examine both the dolly and the tested surface to determine the nature of the failure. The standard categorizes failures into three primary types: A loading dolly is bonded to the surface

ISO 16276-1 establishes the procedures for preparing the test area, applying the glue, performing the pull-off test, and calculating the results. It ensures that different inspectors in different parts of the world can perform the test in a repeatable and comparable manner.

ISO 16276-1:2007 is the international standard for evaluating the adhesion and strength of protective paint systems on steel structures using pull-off testing

A circular metal test element, often called a dolly or pull-stub, is glued directly to the coated surface using a high-strength adhesive (typically a two-pack epoxy). Boundary failure between the substrate and the first

: Tension must be applied perpendicularly at a uniform rate, not exceeding 1 MPa/s , with fracture occurring within 90 seconds.

: A specialized adhesive (often cyanoacrylate or epoxy) is used to glue the dolly to the coating. It must cure completely before testing.