HG/T 20607-2009: PTFE envelope gaskets for use with steel pipe flanges (PN designated)

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Scope

This national standard specifies pattern, dimension, and technical requirement and
marking of PTFE envelope gasket for use with steel pipe flanges (PN designated).
This Standard is applicable to PTFE envelope gasket for use with steel pipe flange with
raised face in nominal pressure of PN6~PN40 and in working temperature of less than or
equal to 150 specified in HG/T 20592. ℃
Note. the use of the asbestos-contained material shall comply with requirements of relevant laws and regulations. When the
production and use are containing asbestos material gasket, protective measures shall be adopted, so as to ensure not endanger
the person health.

Basic Data

Standard ID	HG/T 20607-2009 (HG/T20607-2009)
Description (Translated English)	PTFE envelope gaskets for use with steel pipe flanges (PN designated)
Sector / Industry	Chemical Industry Standard (Recommended)
Classification of Chinese Standard	J15
Classification of International Standard	23.040.60
Word Count Estimation	18,175
Date of Issue	2009-02-05
Date of Implementation	2009-07-01
Older Standard (superseded by this standard)	HG 20607-1997
Quoted Standard	GB/T 3985; GB/T 13404; HG/T 20592; HG/T 20614; QB/T 3625; QB/T 3626
Regulation (derived from)	Engineering [ 2009 ] No. 27
Issuing agency(ies)	Ministry of Industry and Information Technology
Summary	This standard specifies the steel pipe flanges (PN series) with a Teflon -coated gasket type, size, technical requirements and marking. This standard applies to HG/T 20592 specified nominal pressure PN6 ~ PN40, working temperature is less than or equal to 150��C of the raised face steel pipe flanges with PTFE envelope gaskets.