JB/T 4268-1999Technical specifications for manufacture of two-colour water level gauges (English PDF)
双色水位计制造技术条件
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Issued by
MIIT
Level / Type
Industry · Recommended
Issue date
August 6, 1999
Implementation date
January 1, 2000
Scope
JB/T 4268-1999 is the English-translated version of 双色水位计制造技术条件.
JB/T 4268-1999 is the Chinese standard "Technical specifications for manufacture of two-colour water level gauges".
Its scope clause reads: This standard is applicable to the fabrication and acceptance of bicolor water gauges for power station boilers, industrial boilers or containers with nominal pressure PN<=32MPa, working pressure P<=22MPa and working temperature t<=330°C. Its clauses include pressure ratings.
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Document preview — JB/T 4268-1999
National Standard of the People's Republic of China
- Replacing
- JB 4268-1986
Issued by: Ministry of Industry and Information Technology of the People's Republic of China
Contents
- 1 Scope
- 2 Normative References
- 3 Pressure ratings
1 Scope
This standard is applicable to the fabrication and acceptance of bicolor water gauges for power station boilers, industrial boilers or containers with nominal pressure PN<=32MPa, working pressure P<=22MPa and working temperature t<=330°C.
2 Normative References
The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. At time of publication, the editions indicated were valid. All normative documents are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below.
GB/T 4622.1-1993 Specification and symbol of spiral wound gaskets
GB/T 4622.2-1993 Spiral wound gaskets for steel pipe flanges - Dimensions
GB/T 4622.3-1993 Specification of spiral wound gaskets
GB/T 9222-1988 Strength calculation of pressure parts for watertube boilers
JB/T 106-1978 Valves marking and paint
JB/T 1615-1991 Painting and packing specification of boiler
JB/T 2248-1977 Tooth gaskets for high temperature and high pressure flanges
JB/T 3595-1993 Specifications for valves for power station
JB/T 6617-1993 Specification of flexible graphite ring for valves
JB/T 9625-1999 Specification for pressure retaining casting of boiler pipe fittings
JB/T 9626-1999 Specification for boiler forging
JC 225-1981 DST3 transparent quartz glass tubes
JG 67-1982 Rubber asbestos packing
JG 68-1982 Oil impregnated asbestos packing
JG 76-1975 Mica for boiler water level gauge
QB 776-1980 Glass plate and glass tube for liquid level gauge
Steam boiler safety technology supervisory regulations (1996)
3 Pressure ratings
PN1.6MPa, PN2.5MPa, PN4.0MPa, PN6.4MPa, PN10MPa, PN16MPa, PN20MPa, PN25MPa, PN32MPa.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Similar standards
Editions of JB/T 4268
| Edition | Title | Revision | Status |
|---|---|---|---|
| JB/T 4268-1999 | Technical specifications for manufacture of two-colour water level gauges | current edition | Current |
| JB 4268-1986 | Technical specifications for manufacture of two-colour water level gauges | previous edition | Superseded |
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