It is the achievement that RH system can reach design goal, appease to smelt high-technology grade steel such as IF and ultra low carbon steel competently.

该方案使RH系统达到了设计要求，完全满足了冶炼以if钢为代表的诸多高技术含量的超低碳钢。

youdao

Production steel grade: carbon structure steel, low alloy high intensity structure steel, steel for bridge, weathering steel, etc.

生产钢种：碳素结构钢、低合金高强度结构钢、桥梁用钢、耐候钢等。

youdao

The steel for auto is mostly high grade profiled steel, among this, alloy steel, carbon steel, spring steel are mostly.

汽车用钢主要是优质型材，以合结钢、碳结钢和弹簧钢为主。

youdao

Instead of being produced from all high-grade steel, most of The Guardian is produced in mostly forms of carbon fiber and thick polycarbonate as well as some steel.

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