Standard No.:	GB/T 12718-2009
English Name:	High-tensile steel chains(round link)for mining
Chinese Name:	矿用高强度圆环链
Chinese Classification:	J81    Conveying machinery
Professional Classification:	GB    National Standard
ICS Classification:	21.220.30 21.220.30    Chain drives and their components 21.220.30
Source Content Issued by:	AQSIQ;SAC
Issued on:	2009-10-30
Implemented on:	2010-4-1
Status:	valid
Superseding:	GB/T 12718-2001 High-tensile steel chains (round link) for mining
Target Language:	English
File Format:	PDF
Word Count:	8000 words
Translation Price(USD):	200.0
Delivery:	via email in 1 business day

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