Posted in Aviation, Engineering, Government & Military Y12 stands for Harbin Yunshuji Y12 (Harbin Aircraft Manufacturing Corporation; China) Y12 stands for Nuclear Production Facility (Oak Ridge, TN) Y12 Share Pinterest Tweet Whatsapp Post navigation DIPCDipCLP Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Save my name, email, and website in this browser for the next time I comment.