無(wu)(wu)(wu)縫(feng)(feng)管(guan)(guan)(guan)(guan)的(de)(de)(de)外(wai)徑范圍為(wei) 0.1～1425mm，無(wu)(wu)(wu)縫(feng)(feng)管(guan)(guan)(guan)(guan)不銹鋼管(guan)(guan)(guan)(guan)，壁(bi)厚為(wei)0.01～200mm。除圓形(xing)管(guan)(guan)(guan)(guan)外(wai)，還(huan)有各種異(yi)形(xing)斷面(mian)管(guan)(guan)(guan)(guan)和交(jiao)斷面(mian)管(guan)(guan)(guan)(guan)。熱(re)軋無(wu)(wu)(wu)縫(feng)(feng)鋼管(guan)(guan)(guan)(guan)主要生(sheng)產(chan)工序(xu)(xu)（主要檢(jian)驗(yan)工序(xu)(xu)）：管(guan)(guan)(guan)(guan)坯準(zhun)備及檢(jian)查(cha)→管(guan)(guan)(guan)(guan)坯加(jia)熱(re)→穿孔→軋管(guan)(guan)(guan)(guan)→荒管(guan)(guan)(guan)(guan)再加(jia)熱(re)→定（減）徑→熱(re)處理→成品管(guan)(guan)(guan)(guan)矯直(zhi)→精(jing)整(zheng)→檢(jian)驗(yan)(無(wu)(wu)(wu)損、理化、臺(tai)檢(jian)) →入庫異(yi)型(xing)無(wu)(wu)(wu)縫(feng)(feng)鋼管(guan)(guan)(guan)(guan)是除了圓管(guan)(guan)(guan)(guan)以外(wai)的(de)(de)(de)其他截(jie)面(mian)形(xing)狀的(de)(de)(de)無(wu)(wu)(wu)縫(feng)(feng)鋼管(guan)(guan)(guan)(guan)的(de)(de)(de)總稱。按鋼管(guan)(guan)(guan)(guan)截(jie)面(mian)形(xing)狀尺寸(cun)的(de)(de)(de)不同又可分為(wei)等壁(bi)厚異(yi)型(xing)無(wu)(wu)(wu)縫(feng)(feng)鋼管(guan)(guan)(guan)(guan)（代(dai)號為(wei)D）、不等壁(bi)厚異(yi)型(xing)無(wu)(wu)(wu)縫(feng)(feng)鋼管(guan)(guan)(guan)(guan)（代(dai)號為(wei)BD）、變直(zhi)徑異(yi)型(xing)無(wu)(wu)(wu)縫(feng)(feng)鋼管(guan)(guan)(guan)(guan)（代(dai)號為(wei)BJ）。

異(yi)型無(wu)(wu)縫(feng)管(guan)(guan)是除了圓管(guan)(guan)以外的(de)其他截面(mian)形(xing)狀(zhuang)的(de)無(wu)(wu)縫(feng)管(guan)(guan)的(de)總(zong)稱。按鋼管(guan)(guan)截面(mian)形(xing)狀(zhuang)尺寸的(de)不同(tong)又可分為等壁厚異(yi)型無(wu)(wu)縫(feng)管(guan)(guan)（代(dai)(dai)號為D）、不等壁厚異(yi)型無(wu)(wu)縫(feng)管(guan)(guan)（代(dai)(dai)號為BD）、變直徑異(yi)型無(wu)(wu)縫(feng)管(guan)(guan)（代(dai)(dai)號為BJ）。無(wu)(wu)縫(feng)管(guan)(guan)工(gong)藝流(liu)程(cheng)：管(guan)(guan)坯(pi)——檢(jian)(jian)(jian)(jian)驗——剝皮——檢(jian)(jian)(jian)(jian)驗——加(jia)熱(re)——穿(chuan)(chuan)孔——酸(suan)洗——修磨(mo)——潤滑風干(gan)——焊(han)頭——冷拔——固溶處理——酸(suan)洗——酸(suan)洗鈍(dun)化——檢(jian)(jian)(jian)(jian)驗——冷軋(ya)(ya)——去油(you)——切頭——風干(gan)——內拋光——外拋光——檢(jian)(jian)(jian)(jian)驗——標識(shi)——成品包裝；熱(re)軋(ya)(ya)無(wu)(wu)縫(feng)管(guan)(guan)一般在(zai)自動軋(ya)(ya)管(guan)(guan)機組上生產。實(shi)心(xin)管(guan)(guan)坯(pi)經檢(jian)(jian)(jian)(jian)查并清(qing)除表面(mian)缺陷，截成所需長度(du)，304無(wu)(wu)縫(feng)管(guan)(guan)，在(zai)管(guan)(guan)坯(pi)穿(chuan)(chuan)孔端端面(mian)上定心(xin)，安徽無(wu)(wu)縫(feng)管(guan)(guan)，然(ran)后送往加(jia)熱(re)爐加(jia)熱(re)，在(zai)穿(chuan)(chuan)孔機上穿(chuan)(chuan)孔。

使不銹鋼無(wu)(wu)縫(feng)管(guan)安(an)(an)排和成(cheng)分均勻一致，這對質料特別主(zhu)要(yao)，因為熱(re)軋(ya)管(guan)材各段的軋(ya)制(zhi)溫度和冷卻(que)速度不一樣，形成(cheng)安(an)(an)排結(jie)構不一致。冷軋(ya)（拔）無(wu)(wu)縫(feng)鋼管(guan)主(zhu)要(yao)生(sheng)產工(gong)序坯料準備→酸(suan)洗潤滑→冷軋(ya)（拔）→熱(re)處理→矯(jiao)直(zhi)→精整→檢驗(yan)；熱(re)軋(ya)無(wu)(wu)縫(feng)鋼管(guan)主(zhu)要(yao)生(sheng)產工(gong)序（主(zhu)要(yao)檢驗(yan)工(gong)序）：管(guan)坯準備及檢查→管(guan)坯加熱(re)→穿孔→軋(ya)管(guan)→荒管(guan)再加熱(re)→定(ding)（減）徑→熱(re)處理→成(cheng)品管(guan)矯(jiao)直(zhi)→精整→檢驗(yan)(無(wu)(wu)損、理化、臺(tai)檢) →入庫