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(bu)銹鋼管件(jian)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(biao)4.6.1。

 ②. 按連(lian)接形式分(fen)類：

     根據不銹鋼管(guan)(guan)(guan)件(jian)(jian)(jian)端部連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)形(xing)式可將(jiang)管(guan)(guan)(guan)件(jian)(jian)(jian)分為對(dui)(dui)焊(han)(han)連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)管(guan)(guan)(guan)件(jian)(jian)(jian)（簡稱對(dui)(dui)焊(han)(han)管(guan)(guan)(guan)件(jian)(jian)(jian)）、承插焊(han)(han)連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)管(guan)(guan)(guan)件(jian)(jian)(jian)（簡稱承插焊(han)(han)管(guan)(guan)(guan)件(jian)(jian)(jian)）、螺(luo)紋連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)管(guan)(guan)(guan)件(jian)(jian)(jian)（簡稱螺(luo)紋管(guan)(guan)(guan)件(jian)(jian)(jian)）、法蘭連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)管(guan)(guan)(guan)件(jian)(jian)(jian)、卡套連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)管(guan)(guan)(guan)件(jian)(jian)(jian)、卡箍連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)管(guan)(guan)(guan)件(jian)(jian)(jian)、粘接(jie)(jie)(jie)連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)管(guan)(guan)(guan)件(jian)(jian)(jian)、熱熔連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)管(guan)(guan)(guan)件(jian)(jian)(jian)以(yi)及其他(ta)管(guan)(guan)(guan)件(jian)(jian)(jian)。在石油化工裝置的配管(guan)(guan)(guan)設計中，常用(yong)對(dui)(dui)焊(han)(han)管(guan)(guan)(guan)件(jian)(jian)(jian)、支管(guan)(guan)(guan)臺、承插焊(han)(han)及螺(luo)紋連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)管(guan)(guan)(guan)件(jian)(jian)(jian)的形(xing)式。法蘭管(guan)(guan)(guan)件(jian)(jian)(jian)多用(yong)于(yu)特殊(shu)配管(guan)(guan)(guan)場(chang)合，使用(yong)范圍及數量相對(dui)(dui)比較少。可根據GB/T 17185《鋼制(zhi)法蘭管(guan)(guan)(guan)件(jian)(jian)(jian)》的規(gui)定選用(yong)。

③. 按材料分(fen)類：

    a. 碳(tan)素鋼(gang)(gang)管(guan)件(jian)(jian)(jian)；b. 合金(jin)鋼(gang)(gang)管(guan)件(jian)(jian)(jian)；c. 不銹鋼(gang)(gang)管(guan)件(jian)(jian)(jian)；d. 塑料管(guan)件(jian)(jian)(jian)；e. 橡(xiang)膠管(guan)件(jian)(jian)(jian)；f. 鑄鐵管(guan)件(jian)(jian)(jian)；g. 鍛鋼(gang)(gang)管(guan)件(jian)(jian)(jian)等。

④. 按加工方式分：

    無縫、焊接、鍛(duan)制、鑄造(zao)。

不銹鋼管(guan)件的生產(chan)工(gong)藝(yi)

  管(guan)(guan)件的分類和規格非常多，生(sheng)產(chan)(chan)工藝(yi)(yi)可能不同(tong)，了解管(guan)(guan)件的基本生(sheng)產(chan)(chan)工藝(yi)(yi)，對(dui)管(guan)(guan)件選用和配(pei)管(guan)(guan)設計有一定的用處。典型(xing)金屬管(guan)(guan)件的生(sheng)產(chan)(chan)工藝(yi)(yi)見圖4.6.2。