The present status of thin slab hot rolling (TSHR) technology is reviewed, with the emphasis on installations in operation or under construction in Asia. Core technologies required to manufacture steel products are EAF or BOF steelmaking, specific continuous casters, hot rolling practices preventing the formation of edge cracks or surface defects. TSHR can produce as well economical commercial products as high grade products. The main advantages of this route are presented and ways to overcome some of its limitations are suggested.