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(yong)途分類，見表4.6.1。

 ②. 按連接形式分類：

     根據不銹(xiu)鋼管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)(jian)(jian)端部連(lian)(lian)接(jie)形(xing)式(shi)(shi)可將管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)(jian)(jian)分為對(dui)(dui)焊(han)連(lian)(lian)接(jie)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)(jian)(jian)（簡(jian)稱對(dui)(dui)焊(han)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)(jian)(jian)）、承插焊(han)連(lian)(lian)接(jie)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)(jian)(jian)（簡(jian)稱承插焊(han)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)(jian)(jian)）、螺紋(wen)連(lian)(lian)接(jie)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)(jian)(jian)（簡(jian)稱螺紋(wen)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)(jian)(jian)）、法(fa)(fa)蘭(lan)連(lian)(lian)接(jie)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)(jian)(jian)、卡(ka)套連(lian)(lian)接(jie)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)(jian)(jian)、卡(ka)箍(gu)連(lian)(lian)接(jie)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)(jian)(jian)、粘(zhan)接(jie)連(lian)(lian)接(jie)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)(jian)(jian)、熱熔連(lian)(lian)接(jie)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)(jian)(jian)以及(ji)其他(ta)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)(jian)(jian)。在石油化工(gong)裝置的(de)配(pei)管(guan)(guan)(guan)(guan)(guan)(guan)設計中，常用(yong)對(dui)(dui)焊(han)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)(jian)(jian)、支管(guan)(guan)(guan)(guan)(guan)(guan)臺(tai)、承插焊(han)及(ji)螺紋(wen)連(lian)(lian)接(jie)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)(jian)(jian)的(de)形(xing)式(shi)(shi)。法(fa)(fa)蘭(lan)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)(jian)(jian)多用(yong)于特殊配(pei)管(guan)(guan)(guan)(guan)(guan)(guan)場合，使用(yong)范(fan)圍及(ji)數量(liang)相對(dui)(dui)比較(jiao)少。可根據GB/T 17185《鋼制法(fa)(fa)蘭(lan)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)(jian)(jian)》的(de)規(gui)定(ding)選用(yong)。

③. 按(an)材(cai)料分類：

    a. 碳素鋼(gang)(gang)管(guan)件(jian)；b. 合(he)金鋼(gang)(gang)管(guan)件(jian)；c. 不銹鋼(gang)(gang)管(guan)件(jian)；d. 塑料管(guan)件(jian)；e. 橡膠管(guan)件(jian)；f. 鑄鐵管(guan)件(jian)；g. 鍛鋼(gang)(gang)管(guan)件(jian)等。

④. 按(an)加(jia)工方(fang)式分：

    無縫、焊接(jie)、鍛制(zhi)、鑄造。

不(bu)銹鋼管件(jian)的(de)生產工(gong)藝

  管件(jian)的分類(lei)和(he)規格非常多，生產(chan)工藝(yi)可能(neng)不同，了解管件(jian)的基本生產(chan)工藝(yi)，對管件(jian)選用和(he)配管設計有一定(ding)的用處(chu)。典型金屬管件(jian)的生產(chan)工藝(yi)見圖4.6.2。