This standard specifies the product classification, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage requirements of discus. This standard applies to discus used for competition practice. QB/T 2166-1995 Discus QB/T2166-1995 Standard download decompression password: www.bzxz.net

Light Industry Standard of the People's Republic of China
Subject content and scope of application
QB/T2166-1995
This standard specifies the product classification, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage requirements of discus. This standard applies to discus used in competitions and practice. 2 Reference standards
GB/T2828 Batch inspection counting sampling procedures and sampling tables (applicable to inspection of continuous batches) GB/T2829 Periodic inspection counting sampling procedures and sampling tables (applicable to inspection of production process stability) 3 Product classification
3.1 According to the use requirements, it is divided into three categories: men's, women's and youth discus. 3.2 Discus structure and the names of various parts (see Figure 1). Discus ring
3.3 Basic parameters (see Table 1, Table 2)wwW.bzxz.Net
Total mass·8
Diameter of disc, mm
Thickness of disc, mm
Diameter of disc core. mm
Thickness at 6 mm from edge, mm
Approved by China Light Industry Association on October 24, 1995
Discus surface
2005~2025
219~221
44~46
Discus core
Competition discus
1005~1025
180~1 82
1505~1525
199～201
1996-06-01Implementation
Total mass g
Diameter of whole disc, mm
Thickness of whole disc, mm
Diameter of disc core, mm
Thickness at 6mm from edge, mm
4 Technical requirements
QB/T2166-1995
Practice discus
2000~2030
219~221
4.1 Basic parameters of discus shall comply with the provisions of Article 3.3. 4.2 The discus ring, discus face and discus core shall be firmly connected. Women
1000~1030
180~182
1500~1530
199201
39~41
4.3 The edge of the discus is round, and the difference between the maximum and minimum values ​​of the full diameter of the discus used in competition shall not exceed 1% of the average diameter [average diameter - (maximum diameter + minimum diameter)/2].
4.4 The angles of the two sides of the discus should be symmetrical, and the asymmetry of the discus used in competition shall not exceed 1°. 4.5 The unevenness of the two disc surfaces shall not exceed 0.3mm. 4.6 The paint shall be smooth and without peeling, and the disc ring and disc core shall be free of rust. 4.7 Requirements for main raw materials:
4.7.1 The discus ring is made of metal. 4.7.2 The discus surface is made of wood or other materials. 4.7.3 The discus core is made of metal. 5 Test method
5.1 The total mass is tested with a balance, platform scale or other instrument with an induction of no more than 0.5g. 5.2 The diameter and thickness of the discus are measured with a caliper with an indication error of 0.02mm. 5.3 Test method for the firmness of the discus: The discus is placed at a height of 5m above the ground and allowed to fall freely to test whether its comprehensive performance index can meet the requirements of Article 4.2.
5.4 The out-of-roundness of the discus is measured with a caliper with an indication error of 0.02mm or a dial indicator with an indication error of 0.01mm. 5.5 The asymmetry of the discus surface is measured with a universal angle ruler. 5.6 The flatness of the discus surface is measured with a steel ruler and a plug gauge. 5.7 The appearance quality of the discus is visually inspected.
6 Inspection rules
6.1 Factory inspection
6.1.1 Factory inspection: Each batch of products shall be inspected by the quality inspection department of the manufacturer according to this standard before leaving the factory. Products that pass the inspection shall be issued with a qualified mark before leaving the factory;
6.1.2 Factory inspection shall be carried out according to the normal inspection sampling plan of the general inspection level I in GB/T2928. 6.1.3 The factory inspection sequence and qualified quality level (AQL value) shall be carried out as specified in Table 3. 175
Classification of nonconformity
Test items and clauses
Total mass4.1
Diameter and thickness4.1
Symmetry4.4
Non-roundness4.3
Flatness of the surface4.5
Surface appearance4.6
QB/T2166-1995
Test method clauses
6.1.4 For nonconforming products in the inspection sample, the supplier shall replace them with qualified products. 6.2 Type inspection
Qualified quality level (AQL value)
Competition type
Type inspection shall be carried out every six months. Type inspection shall also be carried out in any of the following circumstances. 6.2.1
When the design, structure, key process, or main material is changed; when the production is stopped for more than three months and then resumed; when there is a large gap between the results of the factory inspection and the results of the previous type test; when the national quality supervision agency proposes to conduct a type inspection. Type inspection shall be carried out according to the one-time sampling plan of the judgment level drawing in GB/T2829. The order of type inspection items, judgment array and its unqualified quality level (RQL) shall be carried out as specified in Table 4. 6.2.3
Test items and clauses
Firmness 4.2
Test method clauses
Judgment array (A.R.)
Competition type
6.2.4 Type inspection samples shall be drawn from the qualified batches of factory inspection. 7 Marking, packaging, transportation, storage
7.1 Marking
Practice type
Practice type
Rejection quality level (RQL)
Competition type
Practice type
Each discus should have trademark, specifications and certificate of conformity, and the packaging box should have product name, manufacturer name, production date, packaging box volume gross weight, number of discus, etc.
7.2 Packaging
Discus must have inner and outer packaging; the inner packaging should be moisture-proof, and the outer packaging should be firmly tied and suitable for medium and long-distance transportation requirements. 7.3 Transportation
Load and unload gently to prevent sun and rain. ,
7.4 Storage
The warehouse should be ventilated and dry, and it is strictly forbidden to contact with acids, alkalis and other corrosive substances. 176
Additional Notes:
QB/T2166—1995
This standard was proposed by the Quality Standards Department of China Light Industry General Association. This standard is under the jurisdiction of the National Sports and Cultural Products Standardization Center. This standard was drafted by Beijing Sports Equipment Factory; Beijing Sports and Cultural Products Research Institute participated in the drafting. The main drafters of this standard are Xiao Jianjing, Wang Liusheng, and Zheng Wenna. This standard adopts the "International Association of Athletics Federations 1991/92 Competition Rules". From the date of implementation of this standard, the former Light Industry Ministry Standard SG151-1979 "Discus" will be invalid. 177
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