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(yong)途分類，見表4.6.1。

 ②. 按連(lian)接形式(shi)分類：

     根據(ju)不(bu)銹(xiu)鋼管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)端(duan)部連(lian)(lian)(lian)接(jie)形式可將管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)分(fen)為對(dui)(dui)焊連(lian)(lian)(lian)接(jie)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)（簡稱(cheng)對(dui)(dui)焊管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)）、承(cheng)插焊連(lian)(lian)(lian)接(jie)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)（簡稱(cheng)承(cheng)插焊管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)）、螺紋(wen)(wen)(wen)連(lian)(lian)(lian)接(jie)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)（簡稱(cheng)螺紋(wen)(wen)(wen)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)）、法(fa)蘭(lan)連(lian)(lian)(lian)接(jie)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)、卡套(tao)連(lian)(lian)(lian)接(jie)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)、卡箍連(lian)(lian)(lian)接(jie)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)、粘接(jie)連(lian)(lian)(lian)接(jie)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)、熱熔連(lian)(lian)(lian)接(jie)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)以(yi)及(ji)(ji)其他(ta)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)。在石油化(hua)工(gong)裝置的(de)配管(guan)(guan)(guan)(guan)(guan)(guan)設計中，常用(yong)對(dui)(dui)焊管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)、支管(guan)(guan)(guan)(guan)(guan)(guan)臺、承(cheng)插焊及(ji)(ji)螺紋(wen)(wen)(wen)連(lian)(lian)(lian)接(jie)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)的(de)形式。法(fa)蘭(lan)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)多用(yong)于特殊配管(guan)(guan)(guan)(guan)(guan)(guan)場合(he)，使用(yong)范圍及(ji)(ji)數量相對(dui)(dui)比(bi)較少(shao)。可根據(ju)GB/T 17185《鋼制(zhi)法(fa)蘭(lan)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)》的(de)規定選用(yong)。

③. 按(an)材料分(fen)類：

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

④. 按(an)加工方式分：

    無縫、焊接、鍛制、鑄造。

不(bu)銹(xiu)鋼管(guan)件(jian)的生產工藝

  管(guan)件(jian)(jian)的(de)分類和(he)規(gui)格非常多，生(sheng)(sheng)產(chan)工藝可能不同，了解(jie)管(guan)件(jian)(jian)的(de)基本生(sheng)(sheng)產(chan)工藝，對管(guan)件(jian)(jian)選用和(he)配管(guan)設計有一定的(de)用處(chu)。典(dian)型金屬管(guan)件(jian)(jian)的(de)生(sheng)(sheng)產(chan)工藝見(jian)圖4.6.2。