GB/T 20671.1-2020: Classification system and test methods for nonmetallic gasket materials - Part 1: Standard classification system for nonmetallic gasket materials

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Scope

This Part of GB/T 20671 specifies the classification method, code definition,
thickness requirements and measurement methods, sampling and sample
adjustment of nonmetallic gasket materials.
This Part applies to materials which are made of asbestos, cork, cellulose and
other inorganic or organic materials combined with various adhesives or
impregnant. It does not apply to rubber product materials, gasket coating
materials or multilayer composite gasket materials; but the surface layer single-
layer material of the multilayer composite gasket material is also suitable for
this classification system.

Basic Data

Standard ID	GB/T 20671.1-2020 (GB/T20671.1-2020)
Description (Translated English)	Classification system and test methods for nonmetallic gasket materials - Part 1: Standard classification system for nonmetallic gasket materials
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	Q69
Classification of International Standard	23.100.60
Word Count Estimation	14,185
Date of Issue	2020-06-02
Date of Implementation	2020-07-01
Older Standard (superseded by this standard)	GB/T 20671.1-2006
Quoted Standard	GB/T 20671.2-2006; GB/T 20671.3; GB/T 20671.4; GB/T 20671.5; GB/T 20671.6; GB/T 20671.7; GB/T 20671.8; GB/T 20671.9; GB/T 20671.10; GB/T 20671.11-2006; GB/T 22308; JB/T 9141.5
Issuing agency(ies)	State Administration for Market Regulation, China National Standardization Administration
Summary	This standard specifies the classification methods, code definitions, thickness requirements and measurement methods, sampling, and sample conditioning of non-metallic gasket materials. This standard applies to materials made of asbestos, cork, cellulose and other inorganic or organic materials combined with various binders or impregnants, but not to rubber products, gasket coating materials or multi-layer composite gasket materials , but the surface layer of the multi-layer composite gasket material is also suitable for this classification system.