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Database: 189760 (18 Oct 2025)
GB/T 17720-1999 English PDF
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Standard Title (Description)
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GB/T 17720-1999
English
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Metallic coatings--Review of porosity tests
Obsolete
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Basic data
Standard ID
GB/T 17720-1999 (GB/T17720-1999)
Description (Translated English)
Metallic coatings--Review of porosity tests
Sector / Industry
National Standard (Recommended)
Classification of Chinese Standard
A29
Classification of International Standard
25.220.40
Word Count Estimation
34,321
Date of Issue
4/8/1999
Date of Implementation
9/1/1999
Adopted Standard
ISO 10308-1995, MOD
Issuing agency(ies)
State Quality and Technical Supervision
Summary
This standard applies to chromate conversion coatings and phosphate conversion coating (including organic film).