熱(re)(re)軋(ya)無縫(feng)(feng)鋼管(guan)(guan)(guan)(guan)(guan)主要(yao)生產工序（主要(yao)檢(jian)(jian)(jian)驗工序）：管(guan)(guan)(guan)(guan)(guan)坯準備(bei)及檢(jian)(jian)(jian)查(cha)→管(guan)(guan)(guan)(guan)(guan)坯加熱(re)(re)→穿孔(kong)→軋(ya)管(guan)(guan)(guan)(guan)(guan)→荒管(guan)(guan)(guan)(guan)(guan)再加熱(re)(re)→定（減）徑→熱(re)(re)處(chu)理(li)→成品(pin)(pin)管(guan)(guan)(guan)(guan)(guan)矯(jiao)直(zhi)→精整→檢(jian)(jian)(jian)驗(無損、理(li)化、臺檢(jian)(jian)(jian)) →入庫高壓鍋爐(lu)用無縫(feng)(feng)管(guan)(guan)(guan)(guan)(guan)（GB5310-2008）是用于制造高壓及其以上壓力的水(shui)管(guan)(guan)(guan)(guan)(guan)鍋爐(lu)受熱(re)(re)面用的碳素鋼、合金鋼和不銹(xiu)耐熱(re)(re)鋼無縫(feng)(feng)管(guan)(guan)(guan)(guan)(guan)。無縫(feng)(feng)管(guan)(guan)(guan)(guan)(guan)工藝(yi)流程：管(guan)(guan)(guan)(guan)(guan)坯——檢(jian)(jian)(jian)驗——剝皮——檢(jian)(jian)(jian)驗——加熱(re)(re)——穿孔(kong)——酸洗(xi)(xi)——修磨——潤滑風干——焊頭(tou)——冷(leng)拔——固溶(rong)處(chu)理(li)——酸洗(xi)(xi)——酸洗(xi)(xi)鈍化——檢(jian)(jian)(jian)驗——冷(leng)軋(ya)——去油——切頭(tou)——風干——內拋光(guang)——外(wai)拋光(guang)——檢(jian)(jian)(jian)驗——標識——成品(pin)(pin)包裝；

合金(jin)無(wu)(wu)縫(feng)(feng)管(guan)其實是(shi)(shi)在傳統的(de)(de)(de)無(wu)(wu)縫(feng)(feng)鋼(gang)管(guan)基礎之上發展而來的(de)(de)(de)一(yi)(yi)種(zhong)產(chan)(chan)品，其自(zi)身具備(bei)的(de)(de)(de)一(yi)(yi)些特點自(zi)然也(ye)是(shi)(shi)在傳統無(wu)(wu)縫(feng)(feng)鋼(gang)管(guan)產(chan)(chan)品上有很大的(de)(de)(de)進步和優(you)化(hua)。無(wu)(wu)縫(feng)(feng)管(guan)是(shi)(shi)一(yi)(yi)種(zhong)具有中(zhong)空截面(mian)、周邊沒有接縫(feng)(feng)的(de)(de)(de)長條鋼(gang)材。全世界生(sheng)產(chan)(chan)無(wu)(wu)縫(feng)(feng)管(guan)的(de)(de)(de)共計有110多個(ge)國家的(de)(de)(de)1850多個(ge)公司(si)下的(de)(de)(de)5100多個(ge)生(sheng)產(chan)(chan)廠(chang)，其中(zhong)生(sheng)產(chan)(chan)石油管(guan)的(de)(de)(de)有44個(ge)國家的(de)(de)(de)170多個(ge)公司(si)下的(de)(de)(de)260多個(ge)廠(chang)。按(an)不(bu)銹(xiu)(xiu)鋼(gang)金(jin)相(xiang)組(zu)織不(bu)同分半(ban)鐵(tie)(tie)素(su)(su)體(ti)半(ban)馬氏(shi)體(ti)系不(bu)銹(xiu)(xiu)鋼(gang)管(guan)、馬氏(shi)體(ti)不(bu)銹(xiu)(xiu)鋼(gang)管(guan)、奧氏(shi)體(ti)系不(bu)銹(xiu)(xiu)鋼(gang)管(guan)、奧氏(shi)體(ti)-鐵(tie)(tie)素(su)(su)鐵(tie)(tie)系不(bu)銹(xiu)(xiu)鋼(gang)管(guan)等。

 無(wu)(wu)(wu)縫(feng)(feng)管(guan)(guan)的(de)生(sheng)產(chan)方法很(hen)多(duo)。無(wu)(wu)(wu)縫(feng)(feng)鋼管(guan)(guan)根據交貨要求，熱軋無(wu)(wu)(wu)縫(feng)(feng)管(guan)(guan)，可用(yong)熱軋(約占80～90％)或冷(leng)軋、冷(leng)拔(ba)（約占10～20％）方法生(sheng)產(chan)。熱軋管(guan)(guan)用(yong)的(de)坯(pi)(pi)料有圓(yuan)形(xing)、方形(xing)或多(duo)邊形(xing)的(de)錠(ding)、軋坯(pi)(pi)或連鑄管(guan)(guan)坯(pi)(pi)，管(guan)(guan)坯(pi)(pi)質量(liang)對管(guan)(guan)材質量(liang)有直接(jie)的(de)影響(xiang)。鋼管(guan)(guan)內外(wai)(wai)表(biao)面(mian)不(bu)(bu)得有裂縫(feng)(feng)、折疊、龜裂、裂紋、軋折、離層和(he)結(jie)疤(ba)缺(que)陷(xian)(xian)存在(zai)，無(wu)(wu)(wu)縫(feng)(feng)管(guan)(guan)生(sheng)產(chan)廠家電話(hua)，這些缺(que)陷(xian)(xian)應完(wan)全(quan)清除掉(供機(ji)(ji)械加(jia)工用(yong)管(guan)(guan)除外(wai)(wai))，清除后(hou)不(bu)(bu)得使(shi)壁厚和(he)外(wai)(wai)徑超(chao)過(guo)負偏(pian)差。凡不(bu)(bu)超(chao)過(guo)允(yun)許負偏(pian)差的(de)其他輕微表(biao)面(mian)缺(que)陷(xian)(xian)可不(bu)(bu)清除。熱軋無(wu)(wu)(wu)縫(feng)(feng)管(guan)(guan)一般(ban)在(zai)自動軋管(guan)(guan)機(ji)(ji)組上(shang)生(sheng)產(chan)。實心(xin)管(guan)(guan)坯(pi)(pi)經檢查并清除表(biao)面(mian)缺(que)陷(xian)(xian)，淮(huai)北無(wu)(wu)(wu)縫(feng)(feng)管(guan)(guan)，截(jie)成所需長度(du)，在(zai)管(guan)(guan)坯(pi)(pi)穿(chuan)孔端(duan)端(duan)面(mian)上(shang)定心(xin)，然后(hou)送(song)往加(jia)熱爐(lu)加(jia)熱，在(zai)穿(chuan)孔機(ji)(ji)上(shang)穿(chuan)孔。