The structure, performance parameters and automatic adjusting verticality principle of PA-10 steel pipe mounting machine, which is used in new PBA method, are discussed. Compared with the traditional PBA method, this new PBA method has the advantages of high efficiency, high precision of adjustable verticality, short construction period and high economic benefit. According to the steel pipe column construction case of Provincial Government station of Harbin metro Line 2, the measurement lofting result of the middle pile shows that the adjusting verticality accuracy meet the design requirements, which proves the successful development of PA-10 steel pipe mounting machine. By the application of PA-10 steel pipe mounting machine, the labor intensity of workers is reduced; and at the same time, both the construction safety coefficient and the construction quality are greatly improved, which has great significance for the development of subway station construction toward the mechanization and automation and is in line with the development trend of modern urban rail transit construction.