合(he)(he)金(jin)(jin)無(wu)(wu)(wu)(wu)縫(feng)管(guan)(guan)的(de)(de)密封(feng)性更加(jia)好一(yi)(yi)些，鍍鋅無(wu)(wu)(wu)(wu)縫(feng)管(guan)(guan)，用(yong)于流體輸(shu)送(song)管(guan)(guan)道(dao)來說是一(yi)(yi)款的(de)(de)產品，例(li)如用(yong)于石油、自來水(shui)、等(deng)等(deng)這些領域的(de)(de)管(guan)(guan)道(dao)，需要(yao)長(chang)年埋在地下，則基本上不會出現滲漏現象，能(neng)夠降低資(zi)源的(de)(de)損(sun)耗(hao)；合(he)(he)金(jin)(jin)無(wu)(wu)(wu)(wu)縫(feng)管(guan)(guan)顧(gu)名思(si)義就是用(yong)不同(tong)的(de)(de)金(jin)(jin)屬(shu)材質(zhi)合(he)(he)成在一(yi)(yi)起制成的(de)(de)無(wu)(wu)(wu)(wu)縫(feng)管(guan)(guan)。異(yi)型(xing)無(wu)(wu)(wu)(wu)縫(feng)鋼管(guan)(guan)是除了圓管(guan)(guan)以外的(de)(de)其他截(jie)面(mian)形(xing)狀(zhuang)(zhuang)的(de)(de)無(wu)(wu)(wu)(wu)縫(feng)鋼管(guan)(guan)的(de)(de)總稱。按鋼管(guan)(guan)截(jie)面(mian)形(xing)狀(zhuang)(zhuang)尺寸的(de)(de)不同(tong)又可分為等(deng)壁厚異(yi)型(xing)無(wu)(wu)(wu)(wu)縫(feng)鋼管(guan)(guan)（代號為D）、不等(deng)壁厚異(yi)型(xing)無(wu)(wu)(wu)(wu)縫(feng)鋼管(guan)(guan)（代號為BD）、變直(zhi)徑異(yi)型(xing)無(wu)(wu)(wu)(wu)縫(feng)鋼管(guan)(guan)（代號為BJ）。

 熱軋(ya)無(wu)縫(feng)鋼(gang)(gang)(gang)管主要生產工序（主要檢(jian)(jian)(jian)(jian)驗(yan)工序）：管坯(pi)準備及檢(jian)(jian)(jian)(jian)查→管坯(pi)加熱→穿(chuan)孔→軋(ya)管→荒管再(zai)加熱→定（減）徑→熱處理→成品管矯直→精整→檢(jian)(jian)(jian)(jian)驗(yan)(無(wu)損、理化、臺檢(jian)(jian)(jian)(jian)) →入(ru)庫高壓鍋爐(lu)用無(wu)縫(feng)管（GB5310-2008）是用于制造高壓及其以上壓力(li)的(de)(de)水管鍋爐(lu)受熱面(mian)用的(de)(de)碳素鋼(gang)(gang)(gang)、合金鋼(gang)(gang)(gang)和(he)不銹耐熱鋼(gang)(gang)(gang)無(wu)縫(feng)管。無(wu)縫(feng)管工藝流程：管坯(pi)——檢(jian)(jian)(jian)(jian)驗(yan)——剝皮——檢(jian)(jian)(jian)(jian)驗(yan)——加熱——穿(chuan)孔——酸洗(xi)——修磨——潤(run)滑風(feng)干——焊頭——冷(leng)拔(ba)——固溶(rong)處理——酸洗(xi)——酸洗(xi)鈍化——檢(jian)(jian)(jian)(jian)驗(yan)——冷(leng)軋(ya)——去油(you)——切(qie)頭——風(feng)干——內(nei)拋光——外拋光——檢(jian)(jian)(jian)(jian)驗(yan)——標識——成品包裝；

 無(wu)縫(feng)(feng)(feng)管(guan)(guan)(guan)以其(qi)(qi)優異(yi)的(de)產品(pin)性能一直在(zai)管(guan)(guan)(guan)材(cai)領域(yu)有著特殊(shu)的(de)地位，無(wu)縫(feng)(feng)(feng)管(guan)(guan)(guan)，以其(qi)(qi)復雜(za)的(de)軋制工藝、高昂的(de)軋制成本和坯(pi)料成本，價格通常(chang)遠遠高于其(qi)(qi)他管(guan)(guan)(guan)材(cai)品(pin)種，以至于市(shi)場充(chong)斥(chi)著試(shi)圖替代無(wu)縫(feng)(feng)(feng)管(guan)(guan)(guan)的(de)“假無(wu)縫(feng)(feng)(feng)”的(de)焊管(guan)(guan)(guan)。熱(re)軋無(wu)縫(feng)(feng)(feng)管(guan)(guan)(guan)一般在(zai)自(zi)動軋管(guan)(guan)(guan)機組上(shang)(shang)生產。實心管(guan)(guan)(guan)坯(pi)經檢(jian)查(cha)并清(qing)除(chu)表面缺陷，截成所需長度，在(zai)管(guan)(guan)(guan)坯(pi)穿(chuan)孔(kong)端(duan)端(duan)面上(shang)(shang)定心，然(ran)后送往加熱(re)爐加熱(re)，在(zai)穿(chuan)孔(kong)機上(shang)(shang)穿(chuan)孔(kong)。高壓(ya)鍋爐用(yong)(yong)無(wu)縫(feng)(feng)(feng)管(guan)(guan)(guan)（GB5310-2008）是用(yong)(yong)于制造高壓(ya)及其(qi)(qi)以上(shang)(shang)壓(ya)力(li)的(de)水管(guan)(guan)(guan)鍋爐受(shou)熱(re)面用(yong)(yong)的(de)碳素鋼(gang)(gang)、合金鋼(gang)(gang)和不銹耐熱(re)鋼(gang)(gang)無(wu)縫(feng)(feng)(feng)管(guan)(guan)(guan)。