EN ISO 8501-1:2001

Preparation of steel substrates before application of paints and related products - Visual assessment of surface cleanliness - Part 1: Rust grades and preparation grades of uncoated steel substrates and of steel substrates after overall removal of previous coatings (ISO 8501-1:1988)

Publication date:   Apr 30, 2004

Scope

The standard identifies four levels (designated as "rust grades" of mill scale and rust that are commonly found on surfaces of uncoated erected steel held in stock. It also identifies certain degrees of visual cleanliness (designated as "preparation grades") after surface preparation of uncoated steel surfaces and of steel surfaces after overall removal of any previous coating. These levels of visual cleanliness are related to the common methods of surface cleaning that are used prior to painting. The Standard is intended to be a tool for visual assessment of rust grades and of preparation grades.