一般用(yong)(yong)(yong)(yong)無(wu)縫(feng)(feng)管(guan)(guan)要保證強度和(he)壓(ya)(ya)扁試驗。熱(re)(re)(re)軋(ya)鋼(gang)管(guan)(guan)以熱(re)(re)(re)軋(ya)狀(zhuang)態或熱(re)(re)(re)處(chu)(chu)理狀(zhuang)態交貨(huo)；冷(leng)(leng)軋(ya)以熱(re)(re)(re)以熱(re)(re)(re)處(chu)(chu)理狀(zhuang)態交貨(huo)。異型無(wu)縫(feng)(feng)管(guan)(guan)廣(guang)泛用(yong)(yong)(yong)(yong)于(yu)(yu)各(ge)種結構件、工具(ju)和(he)機械零部件。高(gao)壓(ya)(ya)鍋(guo)爐用(yong)(yong)(yong)(yong)無(wu)縫(feng)(feng)管(guan)(guan)（GB5310-2008）是用(yong)(yong)(yong)(yong)于(yu)(yu)制(zhi)(zhi)造(zao)高(gao)壓(ya)(ya)及其以上壓(ya)(ya)力(li)的水管(guan)(guan)鍋(guo)爐受熱(re)(re)(re)面(mian)用(yong)(yong)(yong)(yong)的碳素鋼(gang)、合金鋼(gang)和(he)不(bu)銹(xiu)耐熱(re)(re)(re)鋼(gang)無(wu)縫(feng)(feng)管(guan)(guan)。異型無(wu)縫(feng)(feng)管(guan)(guan)廣(guang)泛用(yong)(yong)(yong)(yong)于(yu)(yu)各(ge)種結構件、工具(ju)和(he)機械零部件。使不(bu)銹(xiu)鋼(gang)無(wu)縫(feng)(feng)管(guan)(guan)安(an)排(pai)(pai)和(he)成(cheng)分均勻一致，這(zhe)對質(zhi)料特別主要，無(wu)縫(feng)(feng)管(guan)(guan)，因為(wei)熱(re)(re)(re)軋(ya)管(guan)(guan)材各(ge)段的軋(ya)制(zhi)(zhi)溫度和(he)冷(leng)(leng)卻速度不(bu)一樣，形成(cheng)安(an)排(pai)(pai)結構不(bu)一致。無(wu)縫(feng)(feng)管(guan)(guan)的外徑范圍為(wei) 0.1～1425mm，壁厚為(wei)0.01～200mm。除圓形管(guan)(guan)外，精(jing)密(mi)無(wu)縫(feng)(feng)管(guan)(guan)廠家，還有各(ge)種異形斷面(mian)管(guan)(guan)和(he)交斷面(mian)管(guan)(guan)。

 無(wu)(wu)縫管(guan)(guan)(guan)(guan)的(de)生(sheng)產(chan)方法(fa)很多(duo)。無(wu)(wu)縫鋼(gang)管(guan)(guan)(guan)(guan)根據交(jiao)貨要求，無(wu)(wu)縫管(guan)(guan)(guan)(guan)制造(zao)廠家，可用(yong)(yong)熱(re)軋(ya)(約(yue)占(zhan)80～90％)或(huo)冷軋(ya)、冷拔（約(yue)占(zhan)10～20％）方法(fa)生(sheng)產(chan)。熱(re)軋(ya)管(guan)(guan)(guan)(guan)用(yong)(yong)的(de)坯(pi)(pi)料有(you)(you)圓形(xing)、方形(xing)或(huo)多(duo)邊形(xing)的(de)錠、軋(ya)坯(pi)(pi)或(huo)連(lian)鑄管(guan)(guan)(guan)(guan)坯(pi)(pi)，管(guan)(guan)(guan)(guan)坯(pi)(pi)質(zhi)量對管(guan)(guan)(guan)(guan)材質(zhi)量有(you)(you)直(zhi)接(jie)的(de)影響。鋼(gang)管(guan)(guan)(guan)(guan)內外(wai)表面(mian)不得(de)有(you)(you)裂縫、折疊(die)、龜裂、裂紋、軋(ya)折、離層(ceng)和(he)結(jie)疤缺(que)陷存在(zai)，這些(xie)缺(que)陷應完(wan)全(quan)清(qing)(qing)(qing)除(chu)掉(供(gong)機械加(jia)工用(yong)(yong)管(guan)(guan)(guan)(guan)除(chu)外(wai))，清(qing)(qing)(qing)除(chu)后不得(de)使壁厚和(he)外(wai)徑超過(guo)負偏差(cha)。凡不超過(guo)允許負偏差(cha)的(de)其他輕微表面(mian)缺(que)陷可不清(qing)(qing)(qing)除(chu)。熱(re)軋(ya)無(wu)(wu)縫管(guan)(guan)(guan)(guan)一(yi)般在(zai)自動(dong)軋(ya)管(guan)(guan)(guan)(guan)機組上(shang)生(sheng)產(chan)。實心管(guan)(guan)(guan)(guan)坯(pi)(pi)經檢查并清(qing)(qing)(qing)除(chu)表面(mian)缺(que)陷，304無(wu)(wu)縫管(guan)(guan)(guan)(guan)批發，截成(cheng)所需長度，在(zai)管(guan)(guan)(guan)(guan)坯(pi)(pi)穿孔(kong)端端面(mian)上(shang)定心，然后送往加(jia)熱(re)爐加(jia)熱(re)，在(zai)穿孔(kong)機上(shang)穿孔(kong)。

無(wu)(wu)(wu)縫(feng)(feng)管(guan)(guan)(guan)(guan)的(de)生(sheng)產方(fang)法很多。無(wu)(wu)(wu)縫(feng)(feng)鋼(gang)(gang)管(guan)(guan)(guan)(guan)根據(ju)交貨要求，可用(yong)(yong)熱(re)軋(約(yue)占(zhan)80～90％)或(huo)冷軋、冷拔(ba)（約(yue)占(zhan)10～20％）方(fang)法生(sheng)產。熱(re)軋管(guan)(guan)(guan)(guan)用(yong)(yong)的(de)坯料有(you)圓形(xing)、方(fang)形(xing)或(huo)多邊形(xing)的(de)錠、軋坯或(huo)連鑄(zhu)管(guan)(guan)(guan)(guan)坯，管(guan)(guan)(guan)(guan)坯質(zhi)量對管(guan)(guan)(guan)(guan)材(cai)質(zhi)量有(you)直接(jie)的(de)影(ying)響。冷拔(ba)或(huo)冷軋精(jing)密無(wu)(wu)(wu)縫(feng)(feng)管(guan)(guan)(guan)(guan)（GB3639-83）是用(yong)(yong)于機(ji)械結(jie)構(gou)、液壓(ya)設備(bei)(bei)的(de)尺寸精(jing)度高和(he)表面光(guang)潔度好的(de)冷拔(ba)或(huo)冷軋精(jing)密無(wu)(wu)(wu)縫(feng)(feng)管(guan)(guan)(guan)(guan)。選(xuan)用(yong)(yong)精(jing)密無(wu)(wu)(wu)縫(feng)(feng)管(guan)(guan)(guan)(guan)制造(zao)機(ji)械結(jie)構(gou)或(huo)液壓(ya)設備(bei)(bei)等。高壓(ya)鍋爐用(yong)(yong)無(wu)(wu)(wu)縫(feng)(feng)管(guan)(guan)(guan)(guan)（GB5310-2008）是用(yong)(yong)于制造(zao)高壓(ya)及其以上(shang)壓(ya)力的(de)水管(guan)(guan)(guan)(guan)鍋爐受熱(re)面用(yong)(yong)的(de)碳素鋼(gang)(gang)、合金鋼(gang)(gang)和(he)不銹耐熱(re)鋼(gang)(gang)無(wu)(wu)(wu)縫(feng)(feng)管(guan)(guan)(guan)(guan)。