This standard specifies terminologies and definitions, types and dimensions, technical requirements, test methods, inspection rules as well as marking, packaging, transportation and storage of high-tensile steel chains (round link) for mining (hereinafter referred to as round link chain).
This standard is applicable to pull chains of scraper conveyor, scraper reversed loader, boom-type roadheader, coal plough, drum shearer and other machinery for coal mine, and it is not applicable to lifting chains or suspension chain.
Foreword i
1 Scope
2 Normative References
3 Terminologies and Definitions
4 Types and Dimensions
5 Technical Requirements
6 Sampling
7 Test Methods
8 Inspection Rules
9 Marking, Packaging, Transportation and Storage
Appendix A (Informative) Nominal Chain Length and Tolerance
Appendix B (Informative) Matched Chain Length and Tolerance
Appendix C (Normative) Notch Impact Test
Bibliography
