AS 1627.4 pdf download – Metal finishing—Preparation and pretreatment of surfaces Part 4: Abrasive blast cleaning of steel 1.3 DEFINITIONS For the purposes of this Standard the following terms and definitions apply:1.3.1 Abrasive Material which, when projected against a surface at high velocity, will wear and/or roughenthe surface. 1.3.2Abrasive blast cleaning The cleaning and roughening of a surface by impingement...