2　Normative References

Articles contained in the following documents as referenced herein shall constitute a part of this Specification.For the reference codes and standards with edition date,their subsequent amendments(excluding corrigenda)or revised versions are not applicable to this Specification.However,the involved parties who have reached an agreement based on this Specification are encouraged to study and determine for adoption of the latest versions of such codes and standards.While for those without date noted,their latest revisions shall be applicable to this Specification.

ISO 1940-1:Mechanical Vibration-Balance Quality Requirements for Rotors in a Constant(Rigid)State-Part 1:Specification and Verification of Balance Tolerances

ISO 10441-2007(API Std 671-2007):Petroleum,Petrochemical and Natural Gas Industries-Flexible Couplings for Mechanical Power Transmission-Special Purpose Applications

ISO 14691:Petroleum and Natural Gas Industries-Flexible Couplings for Mechanical Power Transmission-General Purpose Applications

ANSI/AGMA 9000:Flexible Couplings-Potential Unbalance Classification