GB/T 699-2015 優質碳素結構鋼
本標(biao)準規定了優(you)質碳(tan)素(su)結(jie)構(gou)鋼棒(bang)(bang)材(cai)的分類與代號,訂貨內容,尺寸、外形(xing)及重(zhong)量,技術要求,試(shi)驗(yan)方法,檢驗(yan)規則,包裝、標(biao)志和(he)質量證明書。本標(biao)準適用于公稱直(zhi)徑或厚(hou)度不大(da)于250mm熱軋和(he)鍛(duan)(duan)制優(you)質碳(tan)素(su)結(jie)構(gou)鋼棒(bang)(bang)材(cai)。經供(gong)需雙方協商,也可供(gong)應公稱直(zhi)徑或厚(hou)度大(da)于250mm熱軋和(he)鍛(duan)(duan)制優(you)質碳(tan)素(su)結(jie)構(gou)鋼棒(bang)(bang)材(cai)(...