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(xiu)鋼管(guan)件(jian)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，見(jian)表4.6.1。

 ②. 按連接形(xing)式分類：

     根據不銹鋼(gang)管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)端部連(lian)(lian)(lian)接(jie)(jie)(jie)形式可將(jiang)管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)分(fen)為對(dui)焊連(lian)(lian)(lian)接(jie)(jie)(jie)管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)（簡稱對(dui)焊管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)）、承插焊連(lian)(lian)(lian)接(jie)(jie)(jie)管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)（簡稱承插焊管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)）、螺(luo)紋連(lian)(lian)(lian)接(jie)(jie)(jie)管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)（簡稱螺(luo)紋管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)）、法蘭連(lian)(lian)(lian)接(jie)(jie)(jie)管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)、卡套連(lian)(lian)(lian)接(jie)(jie)(jie)管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)、卡箍連(lian)(lian)(lian)接(jie)(jie)(jie)管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)、粘接(jie)(jie)(jie)連(lian)(lian)(lian)接(jie)(jie)(jie)管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)、熱熔(rong)連(lian)(lian)(lian)接(jie)(jie)(jie)管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)以及其(qi)他管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)。在石油(you)化工裝置的(de)配(pei)管(guan)(guan)(guan)設計(ji)中，常用(yong)(yong)(yong)對(dui)焊管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)、支管(guan)(guan)(guan)臺、承插焊及螺(luo)紋連(lian)(lian)(lian)接(jie)(jie)(jie)管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)的(de)形式。法蘭管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)多用(yong)(yong)(yong)于特殊配(pei)管(guan)(guan)(guan)場(chang)合，使(shi)用(yong)(yong)(yong)范圍及數量(liang)相對(dui)比較(jiao)少。可根據GB/T 17185《鋼(gang)制法蘭管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)》的(de)規定選用(yong)(yong)(yong)。

③. 按材料分類：

    a. 碳素鋼管(guan)件；b. 合金鋼管(guan)件；c. 不銹(xiu)鋼管(guan)件；d. 塑(su)料管(guan)件；e. 橡膠(jiao)管(guan)件；f. 鑄鐵管(guan)件；g. 鍛(duan)鋼管(guan)件等。

④. 按(an)加工方(fang)式分：

    無(wu)縫、焊接(jie)、鍛制、鑄造(zao)。

不(bu)銹(xiu)鋼管件(jian)的生產工藝

  管(guan)件(jian)的(de)分類和規格非(fei)常多(duo)，生(sheng)產工藝(yi)可能不同，了(le)解管(guan)件(jian)的(de)基本生(sheng)產工藝(yi)，對(dui)管(guan)件(jian)選用(yong)和配管(guan)設計(ji)有一(yi)定的(de)用(yong)處。典型金屬管(guan)件(jian)的(de)生(sheng)產工藝(yi)見圖4.6.2。