锅炉用煤 meaning in English

coal for steam generation
navigation coal
steam coal

Specifications of coal for chain and travelling grate stoker boiler
链条炉排锅炉用煤技术条件
Technical condition of coal used for pulverized coal - fired boiler for power generation
发电煤粉锅炉用煤技术条件
Water tube boilers and auxiliary installations - part 9 : requirements for firing systems for pulverized solid fuels for the boiler ; german version en 12952 - 9 : 2002
水管锅炉和辅助设备.第9部分:锅炉用煤粉燃烧系统要求