Recently, Zhejiang Zhongrui Heavy Industry Technology Co., Ltd. took the lead in drafting and jointly edited by Beijing Construction Mechanization Research Institute Co., Ltd., Luoyang Jiujiu Technology Co., Ltd., China Railway Bridge Bureau Group Co., Ltd., Zhejiang Yitong Special Foundation Engineering Co., Ltd. (formerly Ningbo Yitong Construction Co., Ltd.) and Beijing Jianyan Machinery Technology Co., Ltd B / t13706-2019 construction machinery and equipment forward and reverse circulation engineering drilling rig "was officially promulgated and implemented.