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. 按用途分類，見(jian)表4.6.1。

 ②. 按連接形(xing)式(shi)分類：

     根據不銹鋼管(guan)(guan)(guan)(guan)(guan)(guan)(guan)件(jian)端部連(lian)(lian)接(jie)形(xing)式(shi)可將(jiang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)件(jian)分為對(dui)焊(han)(han)連(lian)(lian)接(jie)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)件(jian)（簡(jian)稱對(dui)焊(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)件(jian)）、承插(cha)焊(han)(han)連(lian)(lian)接(jie)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)件(jian)（簡(jian)稱承插(cha)焊(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)件(jian)）、螺(luo)紋連(lian)(lian)接(jie)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)件(jian)（簡(jian)稱螺(luo)紋管(guan)(guan)(guan)(guan)(guan)(guan)(guan)件(jian)）、法蘭連(lian)(lian)接(jie)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)件(jian)、卡套連(lian)(lian)接(jie)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)件(jian)、卡箍連(lian)(lian)接(jie)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)件(jian)、粘(zhan)接(jie)連(lian)(lian)接(jie)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)件(jian)、熱熔連(lian)(lian)接(jie)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)件(jian)以及其他管(guan)(guan)(guan)(guan)(guan)(guan)(guan)件(jian)。在石油化工(gong)裝置的配(pei)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)設計(ji)中，常用(yong)(yong)對(dui)焊(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)件(jian)、支管(guan)(guan)(guan)(guan)(guan)(guan)(guan)臺、承插(cha)焊(han)(han)及螺(luo)紋連(lian)(lian)接(jie)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)件(jian)的形(xing)式(shi)。法蘭管(guan)(guan)(guan)(guan)(guan)(guan)(guan)件(jian)多用(yong)(yong)于特殊配(pei)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)場合，使用(yong)(yong)范圍及數量相(xiang)對(dui)比較少。可根據GB/T 17185《鋼制法蘭管(guan)(guan)(guan)(guan)(guan)(guan)(guan)件(jian)》的規定選用(yong)(yong)。

③. 按材(cai)料分類：

    a. 碳素鋼管(guan)件(jian)；b. 合(he)金鋼管(guan)件(jian)；c. 不銹(xiu)鋼管(guan)件(jian)；d. 塑(su)料管(guan)件(jian)；e. 橡膠管(guan)件(jian)；f. 鑄鐵(tie)管(guan)件(jian)；g. 鍛鋼管(guan)件(jian)等。

④. 按加工方(fang)式分：

    無縫、焊接(jie)、鍛(duan)制、鑄造(zao)。

不銹鋼管件(jian)的(de)生(sheng)產(chan)工藝

  管(guan)件的(de)分類和規(gui)格非常多(duo)，生產工藝可能不同，了(le)解管(guan)件的(de)基本(ben)生產工藝，對管(guan)件選用(yong)和配管(guan)設計有一(yi)定(ding)的(de)用(yong)處。典型金屬(shu)管(guan)件的(de)生產工藝見圖4.6.2。