The history of the development of the tube & pipe division of Baosteel was reviewed in the article,focusing on the process of technical innovation and the product category enrichment.Thanks to the technical innovation,theφ140 product line has become the most efficient one in the world.With the advance of conglomeracy and the construction of the most advanced weld pipe line and theφ460 premium quality finishing(PQF)line,the catalogue of Baosteel tube & pipe products has covered the extensive range from the hot roll to cold roll,the seamless to the welded,and all of the product dimension scope from 25.4 mm to 610 mm.To meet the requirements of relevant industries such as energy,transportation, machinery,ammunition and other relevant industries,the product variety is diverting from carbon steel to alloy steel, stainless steel and special alloys.As the Baosteel Steel Tubing Plant increased its number of production units,expanded its production capacity and developed new products,it has grown into a pipe and tube supplier with global competitiveness.