JB/T 58651.14-1999 Fastener product quality classification Bolted connection pair JB/T58651.14-1999 Standard download decompression password: www.bzxz.net

Machinery Industry Standard of the People's Republic of China
JE/T 58651.1~58651.14-1999
JB/T58652-1999
Fastener Product Quality Grading
(Internal Use)
Published on 1999-12-30
National Machinery Industry Bureau
Implemented on 2000-06-01
Machinery Industry Standard of the People's Republic of China
Fastener Product Quality Grading
Bolt Connection Pair
(Internal Use)
JB:1$66$1.14-1999
15+: IM/T 5RA.1 :4- 03
This standard specifies the rules and methods for the quality classification of special steel woven high-strength screw connection systems (with super connection before!) produced according to micro-science standards and industry standards. It is also called the piano note when the connection products produced according to other standards are classified. This mark adopts the first-level classification, that is, superior products, second-level products, and fine products. This standard is applicable to the production batch of products composed of single-special specifications, explosion mothers and performance drawings composed of standards and G U T according to the period, explosion mother and performance drawings.
Cited standards
The provisions contained in the following subtitles constitute the provisions of this standard through reference in other standards. At the time of publication, the editions are not all effective, and all standards will be revised. The parties using this standard should explore the applicability of the latest standards by using the following standards: GBT 90—1985
CB1 1231---1991
GB:36331995
Fasteners acceptance inspection, standard and package difference
High strength large hexagon head bolts, large angle nuts and technical specifications for steel structures; Technical conditions for torsion shear type high strength bolted joints for steel structures JB/T58651.:t999
General rules for fastener product quality classification
3 Measurement, terminology
Defect level Definition of 4. Inspection items, sampling methods and defect levels are in accordance with the inspection items, national sample plans and defect levels of the products in accordance with the table. 5. Grading standards
The quality grading standards of the connecting by-products are in accordance with the table 2. 6. Inspection methods
The force test method of the connecting brush products is specified in table 3.
Approved by the National Machinery Industry Administration on 1999-72-3
2000-6-01 Implementation
tight ratio oil
product city
huisanan
non-dinglan
Cui interest difference
J8:r 56651.14159
proposed grade
solid fertilizer force standard pass bias coupon
Futai G/T3633--199S table 7 stipulated standard and afraid of auspicious number
GB:T363]--[995 table 7 now stipulated standard some collection × 95%GR:T33-1905 table 7 stipulated diagnostic standard accuracy × 90% table 3
reject short that effect
interstate lag
til1 3533
C.F1C-4).15C
Parity insurancewww.bzxz.net
Test method
According to G super manufacturing
CB/1231 regulations
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