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(fen)類(lei)，見表(biao)4.6.1。

 ②. 按連接形(xing)式(shi)分類：

     根(gen)據不銹鋼管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)端部連(lian)(lian)接(jie)(jie)形式可將管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)分(fen)為對(dui)焊(han)(han)(han)連(lian)(lian)接(jie)(jie)管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)（簡(jian)(jian)稱對(dui)焊(han)(han)(han)管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)）、承插(cha)焊(han)(han)(han)連(lian)(lian)接(jie)(jie)管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)（簡(jian)(jian)稱承插(cha)焊(han)(han)(han)管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)）、螺紋(wen)連(lian)(lian)接(jie)(jie)管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)（簡(jian)(jian)稱螺紋(wen)管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)）、法蘭(lan)連(lian)(lian)接(jie)(jie)管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)、卡套連(lian)(lian)接(jie)(jie)管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)、卡箍連(lian)(lian)接(jie)(jie)管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)、粘(zhan)接(jie)(jie)連(lian)(lian)接(jie)(jie)管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)、熱熔(rong)連(lian)(lian)接(jie)(jie)管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)以及其(qi)他管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)。在石油化(hua)工裝(zhuang)置的配(pei)管(guan)(guan)(guan)設計中，常用(yong)對(dui)焊(han)(han)(han)管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)、支管(guan)(guan)(guan)臺、承插(cha)焊(han)(han)(han)及螺紋(wen)連(lian)(lian)接(jie)(jie)管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)的形式。法蘭(lan)管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)多用(yong)于特殊配(pei)管(guan)(guan)(guan)場合，使(shi)用(yong)范圍(wei)及數(shu)量相對(dui)比較(jiao)少(shao)。可根(gen)據GB/T 17185《鋼制法蘭(lan)管(guan)(guan)(guan)件(jian)(jian)(jian)(jian)》的規定選用(yong)。

③. 按材(cai)料分類：

    a. 碳素(su)鋼管件(jian)；b. 合金鋼管件(jian)；c. 不銹鋼管件(jian)；d. 塑料管件(jian)；e. 橡(xiang)膠管件(jian)；f. 鑄鐵管件(jian)；g. 鍛(duan)鋼管件(jian)等(deng)。

④. 按加工方式分：

    無縫(feng)、焊(han)接(jie)、鍛制(zhi)、鑄造(zao)。

不銹(xiu)鋼(gang)管(guan)件(jian)的生產工藝

  管(guan)(guan)件的(de)分(fen)類和規(gui)格非常多，生產(chan)工藝可能不同(tong)，了解管(guan)(guan)件的(de)基本生產(chan)工藝，對管(guan)(guan)件選用(yong)和配管(guan)(guan)設計有(you)一定(ding)的(de)用(yong)處(chu)。典型金屬(shu)管(guan)(guan)件的(de)生產(chan)工藝見圖(tu)4.6.2。