Steel Authority of India Limited (SAIL), Designer: R.K. Joshi, Ulka Advertising : The logo for the largest integrated Steel and Iron producer, SAIL was designed in 1973. SAIL has laid a sound infrastructure for the industrial development of the country with its integrated steel plants. The symbol using the triangular form with an upward direction indicates growth and development of steel industry. The solid rhombus used enclosed within the triangle seems to agree with the fact that SAIL stands to infuse high level technical and managerial expertise.