不銹鋼管件（pipe fitting）在管系中起著改變走向、改變標高或改變直徑、封閉管端以及由主管上引出支管的作用。在石油化工裝置中管道品種多，管系復雜，形狀各異，簡繁不等，所用的不銹鋼管件品種、材質、數量也就很多，選用時需要考慮的因素也復雜。管件的基本概念如圖4.6.1所示。不銹鋼管件的種類很多，這里根據用途、連接、材料、加工方式分類。

 ①. 按(an)用(yong)途分類(lei)，見表4.6.1。

 ②. 按(an)連接形式分(fen)類：

     根據不銹鋼管(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)端(duan)部連(lian)(lian)(lian)接(jie)(jie)形(xing)式可(ke)將管(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)分(fen)為對焊連(lian)(lian)(lian)接(jie)(jie)管(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)（簡稱(cheng)(cheng)對焊管(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)）、承(cheng)插(cha)焊連(lian)(lian)(lian)接(jie)(jie)管(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)（簡稱(cheng)(cheng)承(cheng)插(cha)焊管(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)）、螺(luo)紋連(lian)(lian)(lian)接(jie)(jie)管(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)（簡稱(cheng)(cheng)螺(luo)紋管(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)）、法蘭(lan)(lan)連(lian)(lian)(lian)接(jie)(jie)管(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)、卡套連(lian)(lian)(lian)接(jie)(jie)管(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)、卡箍連(lian)(lian)(lian)接(jie)(jie)管(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)、粘接(jie)(jie)連(lian)(lian)(lian)接(jie)(jie)管(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)、熱熔(rong)連(lian)(lian)(lian)接(jie)(jie)管(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)以及(ji)(ji)其他管(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)。在石油化工裝置的配管(guan)(guan)(guan)(guan)設計中，常用對焊管(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)、支管(guan)(guan)(guan)(guan)臺(tai)、承(cheng)插(cha)焊及(ji)(ji)螺(luo)紋連(lian)(lian)(lian)接(jie)(jie)管(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)的形(xing)式。法蘭(lan)(lan)管(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)多用于特(te)殊(shu)配管(guan)(guan)(guan)(guan)場合，使用范圍(wei)及(ji)(ji)數量相對比較少(shao)。可(ke)根據GB/T 17185《鋼制法蘭(lan)(lan)管(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)》的規定(ding)選用。

③. 按材料分類：

    a. 碳素鋼管(guan)件(jian)(jian)；b. 合金(jin)鋼管(guan)件(jian)(jian)；c. 不銹鋼管(guan)件(jian)(jian)；d. 塑料(liao)管(guan)件(jian)(jian)；e. 橡膠管(guan)件(jian)(jian)；f. 鑄鐵管(guan)件(jian)(jian)；g. 鍛鋼管(guan)件(jian)(jian)等。

④. 按(an)加工方式分：

    無縫、焊接、鍛制、鑄造。

不銹(xiu)鋼管(guan)件的生產工藝

  管(guan)(guan)件的分類和規(gui)格(ge)非(fei)常多(duo)，生產(chan)工(gong)藝(yi)可能不(bu)同，了解管(guan)(guan)件的基本生產(chan)工(gong)藝(yi)，對管(guan)(guan)件選用和配(pei)管(guan)(guan)設(she)計有一定的用處(chu)。典型金(jin)屬管(guan)(guan)件的生產(chan)工(gong)藝(yi)見(jian)圖4.6.2。