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(gang)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，見表4.6.1。

 ②. 按連接(jie)形式分類：

     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)形式可將管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)分(fen)為對焊(han)(han)(han)連(lian)(lian)(lian)接(jie)(jie)(jie)管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)（簡(jian)稱對焊(han)(han)(han)管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)）、承(cheng)插焊(han)(han)(han)連(lian)(lian)(lian)接(jie)(jie)(jie)管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)（簡(jian)稱承(cheng)插焊(han)(han)(han)管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)）、螺(luo)(luo)紋(wen)(wen)連(lian)(lian)(lian)接(jie)(jie)(jie)管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)（簡(jian)稱螺(luo)(luo)紋(wen)(wen)管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)）、法(fa)蘭(lan)(lan)(lan)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(re)熔連(lian)(lian)(lian)接(jie)(jie)(jie)管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)以及其他管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)。在石(shi)油化工裝置的(de)配(pei)管(guan)(guan)(guan)設(she)計中，常用(yong)(yong)對焊(han)(han)(han)管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)、支(zhi)管(guan)(guan)(guan)臺、承(cheng)插焊(han)(han)(han)及螺(luo)(luo)紋(wen)(wen)連(lian)(lian)(lian)接(jie)(jie)(jie)管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)的(de)形式。法(fa)蘭(lan)(lan)(lan)管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)多用(yong)(yong)于特(te)殊配(pei)管(guan)(guan)(guan)場(chang)合(he)，使用(yong)(yong)范圍及數量相對比較少。可根據GB/T 17185《鋼(gang)制法(fa)蘭(lan)(lan)(lan)管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)》的(de)規(gui)定選用(yong)(yong)。

③. 按(an)材料分類：

    a. 碳素鋼(gang)管(guan)件(jian)(jian)(jian)；b. 合金鋼(gang)管(guan)件(jian)(jian)(jian)；c. 不(bu)銹(xiu)鋼(gang)管(guan)件(jian)(jian)(jian)；d. 塑料管(guan)件(jian)(jian)(jian)；e. 橡(xiang)膠管(guan)件(jian)(jian)(jian)；f. 鑄鐵管(guan)件(jian)(jian)(jian)；g. 鍛鋼(gang)管(guan)件(jian)(jian)(jian)等(deng)。

④. 按加工(gong)方式(shi)分：

    無縫、焊接、鍛(duan)制、鑄造。

不銹鋼管(guan)件的生產工藝(yi)

  管(guan)件的分(fen)類和規格非常多，生(sheng)(sheng)產工藝可(ke)能(neng)不同，了解管(guan)件的基(ji)本生(sheng)(sheng)產工藝，對管(guan)件選用和配管(guan)設計有一定的用處。典型金屬管(guan)件的生(sheng)(sheng)產工藝見(jian)圖(tu)4.6.2。