This standard applies to gymnastics competition and general practice rings. GB 8395-1987 Rings GB8395-1987 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
This standard applies to gymnastic competition and general practice rings. Rings
This standard refers to the 1979 International Gymnastics Federation gymnastic equipment standard. 1 Product classification
1.1 The types of rings can be divided into: a. Competition rings;
b. General practice rings.
1.2 The basic size parameters should comply with the requirements of Figure 1 and Table 1. S.
Approved by the Ministry of Light Industry of the People's Republic of China on December 10, 1987UDC 685.64
GB 8395—87
Implementation on June 1, 1988
Height of hanging point H
Inside
Distance on the side of the column
Middle S1
Close to the ground S2
Width of two rings B1
Height of ring from the ground
Inner diameter
Cross-section diameter 5
Position of floor hook
Length of zipper after installation L1
Not more than
Main raw materials should comply with the requirements of Table 2.
2 Technical requirements
GB 8395—87
Competition type
Basic size
5 500～5 850
2 550~2 850
35~~40
2.1 The basic size parameters of the lifting rings shall be as specified in Figure 1 and Table 1. Competition
Limit deviation
Wire rope
Ordinary exercise
Basic size
Limit deviation
Ordinary exercise typeWww.bzxZ.net
Cow leather or other materials
Ash or other materials
2.2 The competition type of the belt and ring bears a static load of 4000N, and the ordinary exercise type bears a static load of 3000N. After the external force is removed, there is no deformation or damage.
2.3 Joint device tensioners, expansion cables, and zippers. Competition type is subjected to a static load of 8000N, and ordinary practice type is subjected to a static load of 6000N. They shall not be unfastened, unsoldered, or broken. The tensioners shall be flexible to use, and there shall be no residual deformation after the load is removed. 2.4 The corrosion resistance of the electroplating layer shall be no less than level 7 for competition type and no less than level 5 for ordinary practice type. 3 Test method
3.1 Specifications and dimensions shall be measured with a vernier caliper, steel tape measure, or special ruler with the same indication error. 3.2 Static load test of rings and belts. Hang the lifting ring and use a device with a width of 100mm to apply the load to the lifting ring according to the requirements of Article 2.2 (see Figure 2). After the external force is removed, it should not be damaged by visual inspection. 3.3 Tension test of joint devices, expansion cables, and zippers. Static load test shall be carried out on the tension testing machine according to the provisions of Article 2.3, and the indicators specified in the standard shall be met.
GB8395—87
3.4 ​​The corrosion resistance of the electroplating layer shall be tested for 24 hours in accordance with the provisions of GB5938 "Neutral Salt Spray Test (NSS) Method for Corrosion Resistance of Metal Coatings and Chemically Treated Coatings of Light Industrial Products", and rated in accordance with GB5944 "Evaluation of Corrosion Test Results of Metal Coatings of Light Industrial Products". 4 Inspection rules
4.1 The inspection of batch products is divided into batch inspection and periodic inspection. 4.2 Batch inspection
4.2.1 Batch inspection shall be carried out in accordance with the one-time sampling plan of general inspection level I in GB2828 "Batch inspection counting sampling procedure and sampling table (applicable to inspection of continuous batches)".
4.2.2 The items and clauses of batch inspection, test method clauses and their AQL values ​​shall be in accordance with the provisions of Table 3. Table 3
Basic size parameters
4.3 Periodic inspection
Clause of this standard
Test method clause
Competition type
Ordinary practice type
4.3.1 Samples for periodic inspection must be randomly selected from samples that have passed the batch inspection and all the samples must be inspected according to the batch inspection items. If unqualified products are found, they should be replaced with qualified products. 4.3.2 Periodic inspection shall be carried out once every six months, and shall also be carried out when the design, key process, main raw materials are changed or production is resumed after suspension for more than three months.
4.3.3 Periodic inspection shall be carried out in accordance with the one-time sampling plan of discrimination level I and judgment array (12) in GB2829 "Periodic inspection counting sampling procedure and sampling table (applicable to the inspection of production process stability)". 4.3.4 The items and clauses of periodic inspection, test method clauses and their RQL values ​​shall be in accordance with the provisions of Table 4. Table 4
Bearing capacity of belt and ring
Joint device, tensioner,
Expansion line, zipper tension
Corrosion resistance of electroplating layer
Clause of this standard
Clause of test method
General practice type
5 Marking, packaging, transportation, storage
GB8395—87
5.1 Marking: The product should have trademark, factory name, certificate of conformity, product manual, and date of manufacture. 5.2 Packaging: Select packaging materials to protect the product according to different conditions in different regions. 5.3 Transportation: Do not expose to rain, sun, or moisture during transportation. Be careful to place it gently during transportation and do not squeeze or collide it. 5.4 Storage: The warehouse should be ventilated and dry (products are not allowed to be stored in the open air) and properly kept. Additional instructions:
This standard is proposed by the Ministry of Light Industry of the People's Republic of China and is under the jurisdiction of the National Stationery and Sports Goods Standardization and Quality Inspection Center. This standard was drafted by Shanghai Cultural and Educational Supplies Industry Research Institute, Tianjin Chunhe Sports Goods Factory, Shanghai Sports Equipment Factory No. 1, Guangzhou Dongfang Sports Equipment Factory, Beijing Sports Equipment Factory, and Chengdu Sports Equipment Factory.
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.