螺柱焊陶瓷环是各种类型螺柱与钢铁基体焊接时的保护定型环，由优质堇青石原料制成，广泛用于造船，桥梁制造，重型工业等领域。
Ceramic Ferrules are Specially designed for various stud welding. The products are made from cordierite which is ideal material and applied in shipbuilding industry, heavy construction fields, etc.
这可能会减少用于汽车制造到建筑和桥梁建造等的钢铁需求量。
This could reduce the amount of steel needed to make everything from automobiles to buildings and bridges.
但是选择上海振华重工令人惊讶，因为这个公司没有桥梁建设的经验，其主要业务是制造港口起重机。
The selection of the state-owned Shanghai Zhenhua Heavy Industries Company was a surprise, though, because the company made port cranes and had no bridge building experience.
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