铅淬钢丝,铅淬火钢丝;
This article introduces the application of lead liquid covering flux to the production of patented steel wire, this flux was made in Tianjin a certain Co.
介绍天津某公司生产的铅液覆盖剂在钢丝铅淬火生产中的应用情况。
The process of cooling is called quench. special improved patented steel wire
这种冷却过程叫做淬硬。特号铅淬火冷拉钢丝
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