In order to better meet the technical development of railway wagon braking system,and standardize the de-sign,manufacture and inspection and other requirements of upper pull rod,Q/CR 188-2023 Upper pull rod for rail-way wagon is revised and formed.The revision background and principle of Q/CR 188-2023 is introduced,the main contents of revision are elaborated in detail,including the name and scope of application of the standard,and the mode,the type of material,the angle marking,marking of upper pull rod for railway wagon,so that users of the stan-dard can more accurately understand the technical content of the standard.
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