Standard No.:	GB 8923-1988
Chinese Name:	涂装前钢材表面锈蚀等级和除锈等级
English Name:	Rust grades and preparation grades of steel surfaces before application of paints and related products
Professional Classification:	U06 Vessel technology
Professional Classification:	GB National Standard
ICS Classification:	25.220.20 Surface treatment
Issued by:
Issued on:	1988-03-21
Implemented on:	1989-03-01
Status:	ABOLISHED
Replace By:	GB/T8923.1-2011
Replace By Date:
Language:	English
File Format:	PDF
Word Count:
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This standard specifies visual means for detecting rust grades and preparation grade of steel surface before painting. It is applicable to hot-strip surface that has been de-rusting through blast rust cleaning, manual and power tool cleaning and flame cleaning. The standard may also service as reference for rust grades assessment of cold rolled steels.
This standard is equivalent to International Standard ISO 8501-1: 1988 "Steel Pretreatment before Application of Painting and Relevant Product -- Visual Assessment of Surface Clearness -- Part 1: Rust Grade of Un-Cleaned Steel And Preparation Grade of Steel That Has Been Completely Cleaned".