Baosteel started the production of pipeline steel in the early 1990s.The company has so far produced more than 4 Mt of API X42-X80 and hydrogen sulfide resistant X52-X65 steel.In 2006,it succeeded in producing X100 and X120 pipeline steels,which have been used in many important projects,such as the oil transporting project in the Tarim Basin,the pipeline project in Sudan,the West to East gas pipeline project,the Sino-Russian oil transporting project,etc.Baosteel has made great progress in the purity control of pipeline steel,the homogeneity control of slab composition and surface quality over the last ten years.The company has achieved this by improving its steelmaking equipment and operation management technology,and by integrating its process technology.The phosphorus and sulfur levels of the pipeline steel have been decreased to 50 ppm and 12 ppm respectively(1 ppm=10-6).
展开▼
