摘要
On Dec. 15, 2013, three projects " R & D and Application of Long Life Submerged Entry Nozzle lbr Oxygen- and Manganese-rich Steel", " R & D and Application of Long Life Slag Line MgO-C Bricks for VD Refining Ladle" and " R & D and Application of Al2O3-SiC Gunning Castables" of Puyang Refractories Group Co., Ltd. passed the appraisal of scientific and technological achievements organized by Henan Bureau of Science and Technology.
On Dec. 15, 2013, three projects " R & D and Application of Long Life Submerged Entry Nozzle lbr Oxygen- and Manganese-rich Steel", " R & D and Application of Long Life Slag Line MgO-C Bricks for VD Refining Ladle" and " R & D and Application of Al2O3-SiC Gunning Castables" of Puyang Refractories Group Co., Ltd. passed the appraisal of scientific and technological achievements organized by Henan Bureau of Science and Technology.