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碳(tan)素鋼(gang)(gang)(gang)(gang)(gang)(gang)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)壁工(gong)作溫度不超過(guo)450℃，合金(jin)鋼(gang)(gang)(gang)(gang)(gang)(gang)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)壁工(gong)作溫度超過(guo)450℃。汽車半軸套管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)用(yong)(yong)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)（GB3088-82）是(shi)制(zhi)(zhi)造(zao)汽車半軸套管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)及驅動橋橋殼(ke)軸管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)用(yong)(yong)的(de)(de)(de)(de)(de)優質(zhi)(zhi)(zhi)(zhi)碳(tan)素結(jie)構鋼(gang)(gang)(gang)(gang)(gang)(gang)和合金(jin)結(jie)構鋼(gang)(gang)(gang)(gang)(gang)(gang)熱(re)(re)(re)(re)軋(ya)(ya)(ya)(ya)(ya)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)。柴油(you)機(ji)(ji)用(yong)(yong)高(gao)壓油(you)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)（GB3093-86）是(shi)制(zhi)(zhi)造(zao)柴油(you)機(ji)(ji)系統高(gao)壓管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)用(yong)(yong)的(de)(de)(de)(de)(de)冷(leng)拔無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)。 液(ye)壓和氣動缸筒(tong)用(yong)(yong)精(jing)(jing)(jing)密(mi)(mi)(mi)內徑無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)（GB8713-88）是(shi)制(zhi)(zhi)造(zao)液(ye)壓和氣動缸筒(tong)用(yong)(yong)的(de)(de)(de)(de)(de)具(ju)有(you)(you)精(jing)(jing)(jing)密(mi)(mi)(mi)內徑尺寸的(de)(de)(de)(de)(de)冷(leng)拔或冷(leng)軋(ya)(ya)(ya)(ya)(ya)精(jing)(jing)(jing)密(mi)(mi)(mi)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)。冷(leng)拔或冷(leng)軋(ya)(ya)(ya)(ya)(ya)精(jing)(jing)(jing)密(mi)(mi)(mi)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)（GB3639-83）是(shi)用(yong)(yong)于(yu)(yu)機(ji)(ji)械(xie)結(jie)構、液(ye)壓設備的(de)(de)(de)(de)(de)尺寸精(jing)(jing)(jing)度高(gao)和表面(mian)(mian)(mian)光(guang)潔度好的(de)(de)(de)(de)(de)冷(leng)拔或冷(leng)軋(ya)(ya)(ya)(ya)(ya)精(jing)(jing)(jing)密(mi)(mi)(mi)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)。 生(sheng)產工(gong)藝一般(ban)的(de)(de)(de)(de)(de)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)生(sheng)產工(gong)藝可以分為冷(leng)拔與熱(re)(re)(re)(re)軋(ya)(ya)(ya)(ya)(ya)兩種，冷(leng)軋(ya)(ya)(ya)(ya)(ya)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)生(sheng)產流程一般(ban)要比熱(re)(re)(re)(re)軋(ya)(ya)(ya)(ya)(ya)要復雜，管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)坯首(shou)先要進(jin)(jin)(jin)(jin)行(xing)(xing)(xing)(xing)三輥連軋(ya)(ya)(ya)(ya)(ya)，后(hou)(hou)要進(jin)(jin)(jin)(jin)行(xing)(xing)(xing)(xing)定(ding)徑測試，如果(guo)表面(mian)(mian)(mian)沒有(you)(you)響應(ying)裂紋后(hou)(hou)圓管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)要經(jing)過(guo)割機(ji)(ji)進(jin)(jin)(jin)(jin)行(xing)(xing)(xing)(xing)切割，切割成(cheng)(cheng)長度約(yue)一米的(de)(de)(de)(de)(de)坯料(liao)。 選用(yong)(yong)精(jing)(jing)(jing)密(mi)(mi)(mi)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)制(zhi)(zhi)造(zao)機(ji)(ji)械(xie)結(jie)構或液(ye)壓設備等，可以大(da)大(da)節約(yue)機(ji)(ji)械(xie)加工(gong)工(gong)時(shi)(shi)，材(cai)料(liao)利用(yong)(yong)率，同時(shi)(shi)有(you)(you)利于(yu)(yu)產品質(zhi)(zhi)(zhi)(zhi)量。厚(hou)壁無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)按材(cai)質(zhi)(zhi)(zhi)(zhi)分類鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)材(cai)質(zhi)(zhi)(zhi)(zhi)為10#、20#、35#、45#稱為普通鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)，合金(jin)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)。然(ran)(ran)后(hou)(hou)進(jin)(jin)(jin)(jin)入退火(huo)流程，退火(huo)要用(yong)(yong)酸性液(ye)體(ti)進(jin)(jin)(jin)(jin)行(xing)(xing)(xing)(xing)酸洗，酸洗時(shi)(shi)要注意表面(mian)(mian)(mian)是(shi)否有(you)(you)大(da)量的(de)(de)(de)(de)(de)起泡產生(sheng)，如果(guo)有(you)(you)大(da)量的(de)(de)(de)(de)(de)起泡產生(sheng)說(shuo)明鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)質(zhi)(zhi)(zhi)(zhi)量達不到(dao)(dao)響應(ying)的(de)(de)(de)(de)(de)標準。 外觀(guan)上(shang)冷(leng)軋(ya)(ya)(ya)(ya)(ya)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)要短于(yu)(yu)熱(re)(re)(re)(re)軋(ya)(ya)(ya)(ya)(ya)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)，冷(leng)軋(ya)(ya)(ya)(ya)(ya)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)壁厚(hou)一般(ban)比熱(re)(re)(re)(re)軋(ya)(ya)(ya)(ya)(ya)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)要小，但(dan)是(shi)表面(mian)(mian)(mian)看(kan)起來(lai)比厚(hou)壁無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)更加明亮，表面(mian)(mian)(mian)沒有(you)(you)太多的(de)(de)(de)(de)(de)粗糙，口徑也沒有(you)(you)太多的(de)(de)(de)(de)(de)毛(mao)刺(ci)。熱(re)(re)(re)(re)軋(ya)(ya)(ya)(ya)(ya)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)交(jiao)貨(huo)狀態(tai)一般(ban)是(shi)熱(re)(re)(re)(re)軋(ya)(ya)(ya)(ya)(ya)狀態(tai)經(jing)過(guo)熱(re)(re)(re)(re)處理(li)后(hou)(hou)進(jin)(jin)(jin)(jin)行(xing)(xing)(xing)(xing)交(jiao)貨(huo)。 熱(re)(re)(re)(re)軋(ya)(ya)(ya)(ya)(ya)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)在經(jing)過(guo)質(zhi)(zhi)(zhi)(zhi)檢后(hou)(hou)要經(jing)過(guo)工(gong)作人(ren)員(yuan)的(de)(de)(de)(de)(de)嚴(yan)格的(de)(de)(de)(de)(de)手工(gong)挑選，在質(zhi)(zhi)(zhi)(zhi)檢后(hou)(hou)要進(jin)(jin)(jin)(jin)行(xing)(xing)(xing)(xing)表面(mian)(mian)(mian)涂油(you)，然(ran)(ran)后(hou)(hou)緊接著(zhu)是(shi)多次的(de)(de)(de)(de)(de)冷(leng)拔實(shi)驗，熱(re)(re)(re)(re)軋(ya)(ya)(ya)(ya)(ya)處理(li)后(hou)(hou)要進(jin)(jin)(jin)(jin)行(xing)(xing)(xing)(xing)穿(chuan)孔的(de)(de)(de)(de)(de)實(shi)驗，如果(guo)穿(chuan)孔擴徑過(guo)大(da)就要進(jin)(jin)(jin)(jin)行(xing)(xing)(xing)(xing)矯直矯正。在矯直后(hou)(hou)再(zai)由傳(chuan)(chuan)送裝置(zhi)傳(chuan)(chuan)送到(dao)(dao)探傷機(ji)(ji)進(jin)(jin)(jin)(jin)行(xing)(xing)(xing)(xing)探傷實(shi)驗，后(hou)(hou)貼上(shang)標簽、進(jin)(jin)(jin)(jin)行(xing)(xing)(xing)(xing)規(gui)格編排后(hou)(hou)放置(zhi)到(dao)(dao)到(dao)(dao)倉庫當中。 Q345B無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)方(fang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)市場(chang)(chang)詢報盤冷(leng)清，成(cheng)(cheng)交(jiao)情(qing)況低迷今日(ri)國內Q345B無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)方(fang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)市場(chang)(chang)整體(ti)仍處于(yu)(yu)弱勢運行(xing)(xing)(xing)(xing)狀態(tai)，市場(chang)(chang)詢報盤冷(leng)清，成(cheng)(cheng)交(jiao)情(qing)況低迷，部(bu)分地區(qu)基本無(wu)(wu)(wu)(wu)(wu)成(cheng)(cheng)交(jiao)情(qing)況，市場(chang)(chang)陷入停滯狀態(tai)。從市場(chang)(chang)中了解到(dao)(dao)，雖然(ran)(ran)煉(lian)焦煤市場(chang)(chang)在經(jing)過(guo)前(qian)期的(de)(de)(de)(de)(de)價格下(xia)跌之后(hou)(hou)，市場(chang)(chang)價格已經(jing)降(jiang)至相對低點(dian)，但(dan)是(shi)市場(chang)(chang)需求方(fang)壓價意愿(yuan)仍強(qiang)。

在未來，<榆林>萬盛達鋼鐵(tie)有限公司將(jiang)繼續做好(hao)榆林無縫方管(guan)產品(pin)，發揚“超越(yue)自我、追求(qiu)(qiu)圓滿”的企業精神，以“人人品(pin)管(guan)，技術爭先，團結(jie)協作，求(qiu)(qiu)真務(wu)實。”的宗旨，不(bu)斷進(jin)行經營改革和管(guan)理創(chuang)新，增強(qiang)企業的整體競爭力(li)、凝聚力(li)、創(chuang)新力(li)，來(lai)服務(wu)于(yu)社會。