GB/T 699-2015 優質碳素結構鋼
本標(biao)準規定(ding)了優(you)質(zhi)(zhi)碳素(su)結(jie)構鋼(gang)棒(bang)材的分類與代號,訂貨內容,尺寸(cun)、外(wai)形及重(zhong)量,技術要求,試驗方法,檢驗規則(ze),包裝、標(biao)志和質(zhi)(zhi)量證(zheng)明(ming)書。本標(biao)準適用于公稱(cheng)直(zhi)徑或厚度(du)(du)不(bu)大于250mm熱(re)軋和鍛制(zhi)優(you)質(zhi)(zhi)碳素(su)結(jie)構鋼(gang)棒(bang)材。經供需雙方協商(shang),也可供應公稱(cheng)直(zhi)徑或厚度(du)(du)大于250mm熱(re)軋和鍛制(zhi)優(you)質(zhi)(zhi)碳素(su)結(jie)構鋼(gang)棒(bang)材(...