JB/T 1308.15-1999 PN250a Step-end studs, types, dimensions and technical requirements

JB/T 1308.15-1999 This standard is a revision of JB 1322-73 "Pg (2500kgf/cm2) Step-end Stud Type, Dimensions and Technical Requirements". This standard specifies the type, dimensions and technical requirements of step-end studs for ultra-high pressure valves. This standard is applicable to step-end studs for neutral media such as ethylene and polyethylene with a nominal pressure of 250MPa. This standard was first published on the date of year. JB/T 1308.15-1999 PN250a Step-end Stud Type, Dimensions and Technical Requirements JB/T1308.15-1999 Standard download decompression password: www.bzxz.net

ICS23.060
Machinery Industry Standard of the People's Republic of China
JB/T1308.1~1308.21-1999
PN250MPa ultra-high pressure valves and fittings
Technical conditionswww.bzxz.net
SpecificationsforPN250MPa ultra-high pressure valves and fittings
1999-07-12Promulgated
State Bureau of Machinery Industry
Implementation on 2000-01-01
1 Scope
Machinery Industry Standard of the People's Republic of China
PN250MPa step-end studs
Type, dimensions and specifications of PN 250 MPa stud bolts at boss This standard specifies the types, dimensions and technical requirements of step-end stud bolts for ultra-high pressure valves. JB/T1308.15-1999
Replaces JB132273
This standard applies to step-end studs for neutral media such as ethylene and polyethylene with a nominal pressure of PN250MPa. 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and the parties using this standard should explore the possibility of using the latest versions of the following standards. JB/T1308.14—1999PN250MPa Stud Type, Dimensions and Technical Conditions 3. Structural Type and Dimensions
3.1 The type of step-end studs shall be as specified in Figure 1. The rest
3.2 The dimensions of step-end studs shall be as specified in Table 1. d
Approved by the State Machinery Industry Bureau on July 12, 199932
Weight per 1000
540 (L=145)
580 (L=150)
Implemented on January 1, 2000
Technical requirements
Technical requirements shall be in accordance with the provisions of JB/1308.14. Marking example
JB/T1308.15-1999
Step-end stud with coarse thread diameter 27mm and length 140mm: Step-end stud M27×140JB/T1308.15—199933
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