QB/T 1738-1993 Spring hinges
1 Subject content and scope of application
This standard specifies the product classification, technical requirements, test methods, inspection rules, and marking, packaging, transportation and storage of spring hinges.
This standard applies to single-spring and double-spring hinges installed on various types of one-way and two-way doors.
2 Normative references
GB 5938 Corrosion-resistant testing method of the metal deposits and conversion coatings for the light industrial products - Neutral salt spraying test (NSS)
GB 5944 Evaluation of the corrosion test results of the metal deposits for the light industrial products
GB 1720 Method of test for adhesion of paint films
GB 2828 Sampling procedures and tables for lot-by-lot inspection by attributes (Apply to inspection of successive lots or batches)
GB 2829 Sampling procedures and tables for periodic inspection by attributes (Apply to inspection of stability for productive process)
3 Product classification
3.1 The types, specifications, and dimensions of the products shall meet the requirements of Figure 1, Figure 2, and Table 1.
1 Subject content and scope of application
2 Normative references
3 Product classification
4 Technical requirements
5 Test methods
6 Inspection rules
7 Marking, packaging, transportation, and storage
