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(an)用途分類(lei)，見表4.6.1。

 ②. 按連(lian)接形式分類：

     根(gen)據(ju)不銹鋼管(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)端部連(lian)(lian)(lian)接(jie)(jie)(jie)形式(shi)可(ke)將管(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)分為對焊(han)連(lian)(lian)(lian)接(jie)(jie)(jie)管(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)（簡(jian)(jian)稱對焊(han)管(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)）、承插(cha)焊(han)連(lian)(lian)(lian)接(jie)(jie)(jie)管(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)（簡(jian)(jian)稱承插(cha)焊(han)管(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)）、螺紋連(lian)(lian)(lian)接(jie)(jie)(jie)管(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)（簡(jian)(jian)稱螺紋管(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)）、法(fa)蘭(lan)連(lian)(lian)(lian)接(jie)(jie)(jie)管(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)、卡(ka)(ka)套連(lian)(lian)(lian)接(jie)(jie)(jie)管(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)、卡(ka)(ka)箍連(lian)(lian)(lian)接(jie)(jie)(jie)管(guan)(guan)(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)(guan)(guan)件(jian)(jian)(jian)(jian)、熱熔連(lian)(lian)(lian)接(jie)(jie)(jie)管(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)以(yi)及其他(ta)管(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)。在石油化工裝置的(de)配(pei)管(guan)(guan)(guan)(guan)(guan)設(she)計中，常用對焊(han)管(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)、支管(guan)(guan)(guan)(guan)(guan)臺、承插(cha)焊(han)及螺紋連(lian)(lian)(lian)接(jie)(jie)(jie)管(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)的(de)形式(shi)。法(fa)蘭(lan)管(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)多用于特殊(shu)配(pei)管(guan)(guan)(guan)(guan)(guan)場合，使用范圍及數量相對比較少。可(ke)根(gen)據(ju)GB/T 17185《鋼制法(fa)蘭(lan)管(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)》的(de)規定選用。

③. 按材料(liao)分類：

    a. 碳素鋼(gang)(gang)(gang)管件(jian)；b. 合金鋼(gang)(gang)(gang)管件(jian)；c. 不銹鋼(gang)(gang)(gang)管件(jian)；d. 塑料管件(jian)；e. 橡膠管件(jian)；f. 鑄鐵管件(jian)；g. 鍛鋼(gang)(gang)(gang)管件(jian)等。

④. 按加(jia)工方式分(fen)：

    無縫、焊接(jie)、鍛制、鑄造。

不銹鋼管件的生產(chan)工藝

  管件的(de)(de)分類和規格非常多，生(sheng)產工(gong)(gong)藝(yi)可能(neng)不同，了解管件的(de)(de)基本生(sheng)產工(gong)(gong)藝(yi)，對管件選(xuan)用和配管設計(ji)有一定的(de)(de)用處。典(dian)型金屬管件的(de)(de)生(sheng)產工(gong)(gong)藝(yi)見圖(tu)4.6.2。