Abstract:
Compared in the article are the major technical requirements for the pipe drop weight tear test as specified under APIRP 5L3—2014 and SY/T 6476—2013,including applicable scopes,specimen preparation,equipment parameters,test temperature and specimen evaluation,etc.Based on the analysis,it is identified that the above mentioned two specifications are obviously different in the main aspects of the drop weight tear test,in terms of sampling location,sample size,samp le heat preservation and test result evaluation.APIRP 5L3—2014 is only applicable to the steel linepipe,featuring relatively loose requirement for specimen notch radium dimension,liquid medium of heat preservation,unacceptance of evaluation for abnormal fracture,while SY/T 6476—2013 is applicable to both the steel linpipe and steel coil and plate for pipe-making,featuring strict requirement for specimen notch radium dimension,liquid or gas medium for heat preservation,and the evaluation method for abnormal fracture as specified in Appendix B.