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| non-alloy structural steel | |||
| unalloyed constructional steel (【技】曾经称为碳素结构钢。普通质量非合金结构钢中有一般用途非合金结构钢和铁道用非合金结构钢。优质非合金结构钢中包括机械结构用非合金结构钢，锅炉、压力容器、铁道、焊条用非合金结构钢，冷镦、冷拔、易切削用非合金结构钢等。特殊质量非合金结构钢应保证其淬透性和沿厚度方向的性能。); unalloyed structural steel (Some unalloyed structural steel products are made from semikilled steel. 一些非合金结构钢产品是用半镇静钢制造的。) | |||
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