Standard No.:	JB/T 4268-1999
English Name:	Specification for fabrication of bicolor water gauges
Chinese Name:	双色水位计制造技术条件
Chinese Classification:	J98    Boiler and its auxiliary equipment
Professional Classification:	JB    Professional Standard - Machinery
Issued by:	State Bureau of Machine Building Industry
Issued on:	1999-8-6
Implemented on:	2000-1-1
Status:	valid
Superseding:	JB 4268-1986
Language:	English
File Format:	PDF
Word Count:	2000 words
Price(USD):	60.0
Delivery:	via email in 1 business day

JB/T 4268-1999 Specification for fabrication of bicolor water gauges 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℃. 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.