This standard stipulated the catalogue and coding， defect description， causes of defects，means of detection and methods should be taken of various rail defects.This standard applies to the statistics of rail defects， Cause of defect and defect information treatment.This standard doesn't apply to the following defects：a）The rail parts made from cutting and forging rails，such as switch rails（point rails，wing rails） ，guardrail，expansion joint rails，etc.;b）Driving accidents caused by the non-rail defects or rails caused by the disaster;c）The few special rails made from the special experiment materials or with special cross section out of this standard.
鄂公网安备 42010302001612号 