牌號 | En4A |
對應(yīng)標(biāo)準(zhǔn) | BS 970-1955
機(jī)械和類似工程用鍛鋼 棒材譬正、坯料和鍛件 Wrought Steels IN THE FORM OF BARS, BILLETS AND FORGINGS UP TO 6 IN. RULING SECTION FOR AUTOMOBILE AND GENERAL ENGINEERING PURPOSE |
歸類 | 碳鋼 |
標(biāo)簽 | 25碳鋼(冷拔) |
說明 | ? 棒材冷拔狀態(tài)交貨弄萨。 |