标准号:UNI 8551-1984
英文标准名称:Special unalloyed and alloyed steel finished products, open die and drop forged, quenched and tempered or normalized, suitable for surface hardening. Qualities, requirements and tests. Prodotti finiti fucinati o stampati, allo stato bonificato o normali
标准状态:W
标准类型:国际标准