合(he)(he)(he)金(jin)(jin)(jin)管(guan)(guan)(guan)(guan)(guan)（Alloy pipe）是無縫鋼管(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)一(yi)種，合(he)(he)(he)金(jin)(jin)(jin)管(guan)(guan)(guan)(guan)(guan)分(fen)為(wei)結(jie)構用(yong)無縫管(guan)(guan)(guan)(guan)(guan)及高壓(ya)耐熱合(he)(he)(he)金(jin)(jin)(jin)管(guan)(guan)(guan)(guan)(guan)。主要區別于合(he)(he)(he)金(jin)(jin)(jin)管(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)生產標準及其工(gong)(gong)業，對合(he)(he)(he)金(jin)(jin)(jin)管(guan)(guan)(guan)(guan)(guan)進行(xing)退火調質改變(bian)它的(de)(de)(de)機(ji)械性能(neng)。達到所需要的(de)(de)(de)加工(gong)(gong)條(tiao)件(jian)。其性能(neng)比一(yi)般的(de)(de)(de)無縫鋼管(guan)(guan)(guan)(guan)(guan)多(duo)變(bian)利用(yong)值較高，合(he)(he)(he)金(jin)(jin)(jin)管(guan)(guan)(guan)(guan)(guan)化(hua)學成(cheng)分(fen)中(zhong)含Cr比較多(duo)，耐高溫(wen)、耐低溫(wen)、耐腐蝕的(de)(de)(de)性能(neng)。普碳無縫管(guan)(guan)(guan)(guan)(guan)中(zhong)不含合(he)(he)(he)金(jin)(jin)(jin)成(cheng)分(fen)或者合(he)(he)(he)金(jin)(jin)(jin)成(cheng)分(fen)很(hen)少(shao)，合(he)(he)(he)金(jin)(jin)(jin)管(guan)(guan)(guan)(guan)(guan)在石油、航天、化(hua)工(gong)(gong)、電力、鍋爐、軍工(gong)(gong)等(deng)行(xing)業的(de)(de)(de)用(yong)途比較廣泛的(de)(de)(de)原因因為(wei)合(he)(he)(he)金(jin)(jin)(jin)管(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)機(ji)械性能(neng)多(duo)變(bian)化(hua)好調整(zheng)。