1·The fuel burner of an open hearth furnace is water cool, as is the valve that regulate the flow of air and waste gases.
平炉的燃料燃烧室是用水冷却的，控制空气和废气的阀也是水冷的。
2·Most of the steel for line pipe is made by open-hearth, electric furnace, and basic-oxygen processes.
大部分建管道用管子的钢材由平炉、电炉和碱性顶吹转炉生产。
3·The tube bloom made by this method has given out the same physical and chemical test results as that made by basic open-hearth furnace + vacuum degassing process + ESR process.
采用碱性平炉+ ESR(电渣重熔)法生产高强韧管坯，能完全满足管坯的各项技术要求，各项理化检测结果与采用碱性平炉+真空除气+ ESR法生产的同类管坯水平基本相当。