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. 按連接形式分類：

     根(gen)據不銹鋼(gang)管(guan)(guan)件(jian)(jian)(jian)(jian)端部連(lian)(lian)(lian)(lian)接(jie)(jie)形式可將管(guan)(guan)件(jian)(jian)(jian)(jian)分為對(dui)(dui)焊(han)連(lian)(lian)(lian)(lian)接(jie)(jie)管(guan)(guan)件(jian)(jian)(jian)(jian)（簡稱(cheng)對(dui)(dui)焊(han)管(guan)(guan)件(jian)(jian)(jian)(jian)）、承插(cha)焊(han)連(lian)(lian)(lian)(lian)接(jie)(jie)管(guan)(guan)件(jian)(jian)(jian)(jian)（簡稱(cheng)承插(cha)焊(han)管(guan)(guan)件(jian)(jian)(jian)(jian)）、螺(luo)紋連(lian)(lian)(lian)(lian)接(jie)(jie)管(guan)(guan)件(jian)(jian)(jian)(jian)（簡稱(cheng)螺(luo)紋管(guan)(guan)件(jian)(jian)(jian)(jian)）、法蘭連(lian)(lian)(lian)(lian)接(jie)(jie)管(guan)(guan)件(jian)(jian)(jian)(jian)、卡(ka)套連(lian)(lian)(lian)(lian)接(jie)(jie)管(guan)(guan)件(jian)(jian)(jian)(jian)、卡(ka)箍連(lian)(lian)(lian)(lian)接(jie)(jie)管(guan)(guan)件(jian)(jian)(jian)(jian)、粘接(jie)(jie)連(lian)(lian)(lian)(lian)接(jie)(jie)管(guan)(guan)件(jian)(jian)(jian)(jian)、熱(re)熔連(lian)(lian)(lian)(lian)接(jie)(jie)管(guan)(guan)件(jian)(jian)(jian)(jian)以及其他管(guan)(guan)件(jian)(jian)(jian)(jian)。在石油化(hua)工裝置的(de)配管(guan)(guan)設(she)計中，常用(yong)對(dui)(dui)焊(han)管(guan)(guan)件(jian)(jian)(jian)(jian)、支管(guan)(guan)臺、承插(cha)焊(han)及螺(luo)紋連(lian)(lian)(lian)(lian)接(jie)(jie)管(guan)(guan)件(jian)(jian)(jian)(jian)的(de)形式。法蘭管(guan)(guan)件(jian)(jian)(jian)(jian)多用(yong)于(yu)特殊配管(guan)(guan)場合(he)，使用(yong)范圍及數(shu)量(liang)相對(dui)(dui)比較(jiao)少。可根(gen)據GB/T 17185《鋼(gang)制(zhi)法蘭管(guan)(guan)件(jian)(jian)(jian)(jian)》的(de)規定選用(yong)。

③. 按材料分類：

    a. 碳素(su)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. 鍛鋼管(guan)(guan)(guan)件(jian)等。

④. 按加工方式分：

    無縫、焊接、鍛制、鑄造。

不銹(xiu)鋼管件(jian)的生產(chan)工(gong)藝

  管件的分類和(he)規格(ge)非常多，生(sheng)產(chan)工(gong)藝(yi)可能不同(tong)，了解管件的基(ji)本生(sheng)產(chan)工(gong)藝(yi)，對管件選用和(he)配管設計有一定的用處(chu)。典型金屬管件的生(sheng)產(chan)工(gong)藝(yi)見圖4.6.2。