用"心"打造精品工程——天津二十冶承接天铁热轧板工程纪实用"心"打造精品工程——天津二十冶承接天鐵熱軋闆工程紀實 용"심"타조정품공정——천진이십야승접천철열알판공정기실 Making Precise Engineering Project by "heart"——Record of Tianjin Tiantie Metallurgical Group Co., Ltd's Hot Rolled Plate Project Constructed by Tianjin MCC20 Construction Co., Ltd