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(lei)，見表4.6.1。

 ②. 按連接(jie)形式(shi)分類：

     根(gen)(gen)據不銹(xiu)鋼(gang)管(guan)(guan)(guan)(guan)件(jian)(jian)(jian)端部(bu)連接(jie)(jie)(jie)形式(shi)可(ke)將(jiang)管(guan)(guan)(guan)(guan)件(jian)(jian)(jian)分(fen)為對焊(han)連接(jie)(jie)(jie)管(guan)(guan)(guan)(guan)件(jian)(jian)(jian)（簡稱(cheng)對焊(han)管(guan)(guan)(guan)(guan)件(jian)(jian)(jian)）、承(cheng)(cheng)插(cha)焊(han)連接(jie)(jie)(jie)管(guan)(guan)(guan)(guan)件(jian)(jian)(jian)（簡稱(cheng)承(cheng)(cheng)插(cha)焊(han)管(guan)(guan)(guan)(guan)件(jian)(jian)(jian)）、螺紋連接(jie)(jie)(jie)管(guan)(guan)(guan)(guan)件(jian)(jian)(jian)（簡稱(cheng)螺紋管(guan)(guan)(guan)(guan)件(jian)(jian)(jian)）、法蘭(lan)連接(jie)(jie)(jie)管(guan)(guan)(guan)(guan)件(jian)(jian)(jian)、卡套連接(jie)(jie)(jie)管(guan)(guan)(guan)(guan)件(jian)(jian)(jian)、卡箍連接(jie)(jie)(jie)管(guan)(guan)(guan)(guan)件(jian)(jian)(jian)、粘(zhan)接(jie)(jie)(jie)連接(jie)(jie)(jie)管(guan)(guan)(guan)(guan)件(jian)(jian)(jian)、熱熔連接(jie)(jie)(jie)管(guan)(guan)(guan)(guan)件(jian)(jian)(jian)以及其(qi)他管(guan)(guan)(guan)(guan)件(jian)(jian)(jian)。在石油化工裝置的(de)(de)配管(guan)(guan)(guan)(guan)設計中，常用(yong)對焊(han)管(guan)(guan)(guan)(guan)件(jian)(jian)(jian)、支管(guan)(guan)(guan)(guan)臺、承(cheng)(cheng)插(cha)焊(han)及螺紋連接(jie)(jie)(jie)管(guan)(guan)(guan)(guan)件(jian)(jian)(jian)的(de)(de)形式(shi)。法蘭(lan)管(guan)(guan)(guan)(guan)件(jian)(jian)(jian)多(duo)用(yong)于特殊(shu)配管(guan)(guan)(guan)(guan)場(chang)合，使用(yong)范圍及數量(liang)相對比較少。可(ke)根(gen)(gen)據GB/T 17185《鋼(gang)制法蘭(lan)管(guan)(guan)(guan)(guan)件(jian)(jian)(jian)》的(de)(de)規定選用(yong)。

③. 按材料分類(lei)：

    a. 碳素鋼管(guan)(guan)件(jian)(jian)；b. 合(he)金(jin)鋼管(guan)(guan)件(jian)(jian)；c. 不(bu)銹鋼管(guan)(guan)件(jian)(jian)；d. 塑(su)料管(guan)(guan)件(jian)(jian)；e. 橡膠(jiao)管(guan)(guan)件(jian)(jian)；f. 鑄鐵管(guan)(guan)件(jian)(jian)；g. 鍛鋼管(guan)(guan)件(jian)(jian)等。

④. 按加工(gong)方式分：

    無縫、焊接(jie)、鍛制、鑄造。

不銹鋼管件的生(sheng)產工(gong)藝

  管(guan)件的(de)(de)分類和規(gui)格非常多(duo)，生(sheng)產(chan)工(gong)藝可能不同，了解管(guan)件的(de)(de)基本(ben)生(sheng)產(chan)工(gong)藝，對(dui)管(guan)件選(xuan)用和配(pei)管(guan)設計有一定的(de)(de)用處。典型金屬(shu)管(guan)件的(de)(de)生(sheng)產(chan)工(gong)藝見(jian)圖4.6.2。