basic open hearth process

Adopting the basic open-hearth furnace+ESR process for production of tube blooms with high strength and toughness can meet all the requirements for tube bloom .

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。