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(fen)類(lei)，見表(biao)4.6.1。

 ②. 按連接形式(shi)分(fen)類(lei)：

     根據不銹鋼管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)端(duan)部連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)(jie)(jie)(jie)形式可(ke)將管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)分為對焊(han)連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)(jie)(jie)(jie)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)（簡(jian)(jian)稱(cheng)(cheng)對焊(han)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)）、承(cheng)插(cha)焊(han)連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)(jie)(jie)(jie)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)（簡(jian)(jian)稱(cheng)(cheng)承(cheng)插(cha)焊(han)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)）、螺(luo)紋連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)(jie)(jie)(jie)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)（簡(jian)(jian)稱(cheng)(cheng)螺(luo)紋管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)）、法蘭連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)(jie)(jie)(jie)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)、卡套連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)(jie)(jie)(jie)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)、卡箍連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)(jie)(jie)(jie)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)、粘(zhan)接(jie)(jie)(jie)(jie)(jie)(jie)連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)(jie)(jie)(jie)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)、熱(re)熔連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)(jie)(jie)(jie)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)以(yi)及其(qi)他管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)。在石油化工裝置的(de)(de)配(pei)管(guan)(guan)(guan)(guan)(guan)(guan)設計中，常(chang)用(yong)對焊(han)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)、支管(guan)(guan)(guan)(guan)(guan)(guan)臺、承(cheng)插(cha)焊(han)及螺(luo)紋連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)(jie)(jie)(jie)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)的(de)(de)形式。法蘭管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)多用(yong)于(yu)特殊(shu)配(pei)管(guan)(guan)(guan)(guan)(guan)(guan)場合，使用(yong)范(fan)圍及數量相對比較少(shao)。可(ke)根據GB/T 17185《鋼制法蘭管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)》的(de)(de)規(gui)定(ding)選用(yong)。

③. 按材料分類：

    a. 碳素鋼管(guan)(guan)(guan)件(jian)；b. 合金鋼管(guan)(guan)(guan)件(jian)；c. 不銹鋼管(guan)(guan)(guan)件(jian)；d. 塑料管(guan)(guan)(guan)件(jian)；e. 橡膠管(guan)(guan)(guan)件(jian)；f. 鑄鐵管(guan)(guan)(guan)件(jian)；g. 鍛(duan)鋼管(guan)(guan)(guan)件(jian)等。

④. 按加(jia)工(gong)方式分(fen)：

    無縫、焊接(jie)、鍛制、鑄造(zao)。

不銹鋼管件的(de)生產工藝(yi)

  管件的(de)分(fen)類(lei)和規格(ge)非(fei)常(chang)多，生產(chan)工藝可(ke)能不同，了解管件的(de)基本生產(chan)工藝，對管件選用(yong)和配管設計有一定的(de)用(yong)處。典型金屬管件的(de)生產(chan)工藝見圖4.6.2。