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(gang)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(yong)途分類，見(jian)表4.6.1。

 ②. 按連接(jie)形式分類(lei)：

     根(gen)據不銹鋼管(guan)(guan)件(jian)(jian)(jian)端部(bu)連接(jie)形(xing)式可將管(guan)(guan)件(jian)(jian)(jian)分為對(dui)焊(han)(han)連接(jie)管(guan)(guan)件(jian)(jian)(jian)（簡(jian)稱(cheng)(cheng)對(dui)焊(han)(han)管(guan)(guan)件(jian)(jian)(jian)）、承插焊(han)(han)連接(jie)管(guan)(guan)件(jian)(jian)(jian)（簡(jian)稱(cheng)(cheng)承插焊(han)(han)管(guan)(guan)件(jian)(jian)(jian)）、螺(luo)紋連接(jie)管(guan)(guan)件(jian)(jian)(jian)（簡(jian)稱(cheng)(cheng)螺(luo)紋管(guan)(guan)件(jian)(jian)(jian)）、法蘭連接(jie)管(guan)(guan)件(jian)(jian)(jian)、卡套連接(jie)管(guan)(guan)件(jian)(jian)(jian)、卡箍連接(jie)管(guan)(guan)件(jian)(jian)(jian)、粘接(jie)連接(jie)管(guan)(guan)件(jian)(jian)(jian)、熱熔連接(jie)管(guan)(guan)件(jian)(jian)(jian)以及(ji)其他管(guan)(guan)件(jian)(jian)(jian)。在石(shi)油化(hua)工裝置(zhi)的配管(guan)(guan)設計中，常(chang)用對(dui)焊(han)(han)管(guan)(guan)件(jian)(jian)(jian)、支管(guan)(guan)臺、承插焊(han)(han)及(ji)螺(luo)紋連接(jie)管(guan)(guan)件(jian)(jian)(jian)的形(xing)式。法蘭管(guan)(guan)件(jian)(jian)(jian)多用于特殊(shu)配管(guan)(guan)場合，使用范(fan)圍及(ji)數量相對(dui)比較少(shao)。可根(gen)據GB/T 17185《鋼制(zhi)法蘭管(guan)(guan)件(jian)(jian)(jian)》的規(gui)定選用。

③. 按材料(liao)分類：

    a. 碳素鋼(gang)(gang)管(guan)件(jian)(jian)；b. 合金鋼(gang)(gang)管(guan)件(jian)(jian)；c. 不銹鋼(gang)(gang)管(guan)件(jian)(jian)；d. 塑料管(guan)件(jian)(jian)；e. 橡(xiang)膠管(guan)件(jian)(jian)；f. 鑄鐵管(guan)件(jian)(jian)；g. 鍛(duan)鋼(gang)(gang)管(guan)件(jian)(jian)等。

④. 按加工方式(shi)分：

    無(wu)縫、焊接、鍛制、鑄造(zao)。

不銹鋼管(guan)件的生(sheng)產工(gong)藝(yi)

  管(guan)(guan)(guan)(guan)件(jian)的(de)分(fen)類和規格非常多，生產(chan)工藝可能不同，了解管(guan)(guan)(guan)(guan)件(jian)的(de)基本生產(chan)工藝，對管(guan)(guan)(guan)(guan)件(jian)選用(yong)和配管(guan)(guan)(guan)(guan)設計有一定的(de)用(yong)處。典型金屬管(guan)(guan)(guan)(guan)件(jian)的(de)生產(chan)工藝見圖4.6.2。