GB/T 699-2015 優質碳素結構鋼
本(ben)標準規(gui)定了優質(zhi)(zhi)(zhi)碳素結(jie)構(gou)鋼棒(bang)材(cai)的分類與代號,訂貨內容(rong),尺寸、外形(xing)及(ji)重量(liang),技(ji)術要(yao)求,試驗(yan)方法,檢驗(yan)規(gui)則(ze),包(bao)裝(zhuang)、標志和(he)質(zhi)(zhi)(zhi)量(liang)證明書。本(ben)標準適(shi)用于(yu)公稱直徑或厚度不(bu)大(da)于(yu)250mm熱軋(ya)和(he)鍛制(zhi)優質(zhi)(zhi)(zhi)碳素結(jie)構(gou)鋼棒(bang)材(cai)。經供需雙(shuang)方協商(shang),也可供應公稱直徑或厚度大(da)于(yu)250mm熱軋(ya)和(he)鍛制(zhi)優質(zhi)(zhi)(zhi)碳素結(jie)構(gou)鋼棒(bang)材(cai)(...