Carbon steel boiler, with less gas, generally use the basic openhearthsteel i. e. the use of basic lining.
锅炉用碳素钢，夹杂气体较少，一般采用碱性平炉钢即使用碱性炉衬。
2
Trials are conducted on the slag retaining technique in the large openhearth with dual tapping spouts at Baotou Iron &Steel Company and marked results have been achieved in the tests.
本文介绍包钢对大型固定式双槽出钢平炉进行了挡渣技术的试验、研究及取得的显著效果。
3
Later added 2 openhearth furnaces for producing steel castings.