GB/T 699-2015 優質碳素結構鋼
本標(biao)準規定了優質(zhi)(zhi)碳(tan)素(su)結(jie)構鋼(gang)棒(bang)(bang)材的分類與代號,訂貨內容,尺(chi)寸(cun)、外形(xing)及重量(liang),技術(shu)要求,試驗(yan)方法,檢驗(yan)規則(ze),包裝、標(biao)志和(he)質(zhi)(zhi)量(liang)證(zheng)明(ming)書。本標(biao)準適用(yong)于(yu)公(gong)稱直(zhi)徑或厚(hou)度(du)(du)不大(da)于(yu)250mm熱(re)軋和(he)鍛制優質(zhi)(zhi)碳(tan)素(su)結(jie)構鋼(gang)棒(bang)(bang)材。經供需雙(shuang)方協商,也可供應公(gong)稱直(zhi)徑或厚(hou)度(du)(du)大(da)于(yu)250mm熱(re)軋和(he)鍛制優質(zhi)(zhi)碳(tan)素(su)結(jie)構鋼(gang)棒(bang)(bang)材(...