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SSH EN ISO 8504-4:2024

Preparation of steel substrates before application of paints and related products - Surface preparation methods - Part 4: Acid pickling (ISO 8504-4:2022)

Sep 29, 2025

General information

60.60     Sep 29, 2025

95.99   

DPS

DPS/KT 298

European Norm

25.220.10  

English  

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Scope

This document describes the typical method for acid pickling generally used in a shop facility for the preparation of steel substrates before application of paints and related products. It is in general applicable to new steelwork.
This method is essentially intended to remove rust and mill scale. Typically, only slight oil residues can be removed during this process. It can be used on steel surfaces that are easily deformed by abrasive blasting.

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PUBLISHED
SSH EN ISO 8504-4:2024
60.60 Standard published
Sep 29, 2025

Related project

Adopted from EN ISO 8504-4:2024 IDENTICAL

Adopted from ISO 8504-4:2022 IDENTICAL