GB 8923-1988 Rust grades and Preparation Grades of Steel Surfaces before Application of Paints and Related Products

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GB 8923-1988 Rust grades and Preparation Grades of Steel Surfaces before Application of Paints and Related Products
涂装前钢材表面锈蚀等级和除锈等级（英文版）

英文名称：  Rust grades and preparation grades of steel surfaces before application of paints and related products
替代情况：  CB* 3092-81
中标分类：  船舶>>船舶综合>>U06船舶工艺 
ICS分类：  机械制造>>表面处理和涂覆>>25.220.20表面处理 
UDC分类：  669.14;620.191
采标情况：  ISO 8501-1-1987,EQV
发布部门：  中国石油和化学工业协会
发布日期：  1988-03-21
实施日期：  1989-03-01 
首发日期：  1988-03-21
复审日期：  2004-10-14
归口单位：  全国涂料和颜料标准化技术委员会
主管部门：  中国石油和化学工业协会
起草单位：  中国船舶工业总公司船舶工艺研究所、铁道部戚墅堰机车车辆工艺研究所
页数：  16开， 页数：13， 字数：
出版日期：  1989-03-01

本标准规定了涂装前钢材表面锈蚀程度和除锈质量的目视评定等级。
它适用于以喷射或抛射除锈、手工和动力工具除锈以及火焰除锈方式处理过的热轧钢材表面。
冷轧钢材表面除锈等级的评定也可参照使用。
本标准等效采用国际标准ISO8501-1：1988《涂装油漆和有关产品前钢材预处理??表面清洁度的目视评定  第一部分：未涂装过的钢材和全面清除原有涂层后的钢材的锈蚀等级和除锈等级》。

Contents
1. General provision 
2. Rust Grades 
3. Preparation Grades 
3.1 General Principles 
3.2 Blast Rust Cleaning Methods 
3.3 Manual and Power Tools Rust Cleaning. 
3.4 Flame Cleaning 
4. Visual Assessment of Rust Grade and Preparation Grade of Steel Surface 
5 Photos 
Additional Explanation 

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".
1. General provision
1.1 According to this standard the rust grades of unpainted original steel surface shall be divided into for "rust grades", and preparation grades of the unpainted cleaned steel surface shall be divided into several "preparation grades". Rust grade and preparation grade of steel surface can be accessed through literal descriptions and type typical photo model.
1.2 This standard expresses the assessment of rust grade and preparation grade of steel surface on a visual base. These grades shall be directly assessed by normal sight with moderate lighting, but without magnifier and other implements.2. Rust Grades