Home / Standards / GB/T 28057-2011 GB/T 28057-2011 Abolished Specification for oxygen converter heat recovery boiler 氧气转炉余热锅炉技术条件 Standard Type GBT ICS 27.060.30 CCS J98 Status 废止 Issue Date 2011-12-30 Implementation 2012-07-01 Responsible Dept 国家标准委 Drafting Unit 国家标准委