DIN EN ISO 16925 E 2021-07 PDF

Full title and description

STB DIN EN ISO 16925 E 2021-07 — Paints and varnishes — Determination of the resistance of coatings to pressure water‑jetting (English/German draft designation: prEN ISO 16925:2021, E edition). This document specifies a laboratory test method to evaluate how coatings withstand pressure water‑jetting.

Abstract

This standard defines a test procedure that simulates the effects of high‑pressure water‑jet cleaning on coatings to assess their resistance and durability. It covers specimen preparation, test apparatus and conditions, test execution, evaluation criteria and reporting of results.

General information

• Status: Draft / published as a national EN/DIN English draft (designation E); later superseded by national adoption of EN ISO 16925.
• Publication date: 2021-07-01 (E draft / prEN designation).
• Publisher: Deutsches Institut für Normung (DIN) — English/German draft; International Organization for Standardization (ISO) published the final ISO 16925:2021 edition.
• ICS / categories: 87.040 — Paints and varnishes.
• Edition / version: prEN ISO 16925:2021 (E) — draft issued July 2021; ISO final edition ISO 16925:2021 (published December 2021).
• Number of pages: Draft listing shows 41 pages (draft/prEN PDF); the finalized ISO document is 16 pages.

Sources for status, dates and page counts are drawn from DIN/standards listings and the ISO catalogue.

Scope

The standard specifies a laboratory test method for assessing the resistance of paint and varnish coatings when exposed to pressure water‑jetting. It applies to coated substrates where water‑jetting is used in maintenance, cleaning or surface‑preparation operations and where the coating performance after such exposure is of interest. The test simulates practical water‑jetting conditions and provides criteria for evaluating coating deterioration or failure.

Key topics and requirements

• Definition of apparatus and calibrated pressure/water‑jet settings to reproduce service‑relevant water‑jetting conditions.
• Specification of specimen size, substrate types, coating systems and preconditioning requirements.
• Detailed test procedure: nozzle geometry, stand‑off distance, traverse speed, number of passes and exposure duration.
• Evaluation criteria and acceptance/rejection conditions for coating damage (visual assessment, blistering, detachment, substrate exposure).
• Reporting requirements: test parameters, environmental conditions, observations, photographic documentation and conformity statement.

These topics follow the method description and reporting format contained in the draft and final ISO text.

Typical use and users

Used by paint and coating manufacturers, independent testing and calibration laboratories, certification bodies, corrosions specialists, asset owners and engineers who need to validate coating performance against water‑jetting cleaning or maintenance procedures. Procurement and quality teams use the standard for specifying test requirements in contracts and product data sheets.

Related standards

ISO 16925:2021 supersedes ISO 16925:2014. The prEN/pr national draft (DIN EN ISO 16925:2021-07) was followed by national adoption as DIN EN ISO 16925:2022-06 (EN ISO 16925:2022) in several jurisdictions. Other related standards cover complementary coatings tests and surface preparation methods under ISO/TC 35.

Keywords

paints and varnishes; coatings; pressure water‑jetting; resistance testing; durability; coating evaluation; prEN ISO 16925; EN ISO 16925; DIN; ISO 16925.

FAQ

Q: What is this standard?

A: It is a technical test method standard (prEN/DIN/ISO designation) for determining how well coatings resist the mechanical and hydraulic action of pressure water‑jetting.

Q: What does it cover?

A: The standard covers test apparatus and calibration, specimen preparation and conditioning, specific water‑jet parameters (nozzle, pressure, distance, speed), test execution, evaluation criteria for coating damage and the required test report content.

Q: Who typically uses it?

A: Coating manufacturers, independent testing laboratories, certification bodies, asset owners (e.g., marine, industrial, infrastructure) and procurement or quality teams specifying performance requirements for coatings.

Q: Is it current or superseded?

A: The “E 2021-07” designation refers to a DIN/EN English draft issued in July 2021; the final international edition ISO 16925:2021 was published in December 2021 and national adoption as DIN EN ISO 16925 followed in 2022 (DIN EN ISO 16925:2022-06). The draft listing is therefore superseded by the finalized ISO/EN versions. Specific national adoption dates may vary.

Q: Is it part of a series?

A: It sits within ISO/TC 35 (paints and varnishes) test method standards; while not numerically part of a multi‑part series, it is related to other ISO/EN standards that define coating performance and surface preparation tests.

Q: What are the key keywords?

A: Paints and varnishes, coatings, pressure water‑jetting, resistance testing, durability, test method, EN ISO 16925, DIN, ISO.