Abstract: Fully summarized here are the configurations and characteristics of the main steel pipe plants of Baosteel.Described are the equipment revamps of the Φ140 mm full floating mandrel mill line and the Φ114 mm Accu Roll plant, as well as the general conditions of the Φ460 mm PQF plant.Baosteel's product variety R&D history is reviewed, concerning OCTG, boiler pipe and welded pipeline pipe etc., and actual application cases of typical products are elaborated.