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(gang)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. 按用途分類(lei)，見表4.6.1。

 ②. 按連(lian)接形式分類(lei)：

     根據(ju)不銹鋼管(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)端(duan)部連(lian)(lian)(lian)(lian)接(jie)(jie)形式可(ke)將管(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)分為對焊(han)(han)連(lian)(lian)(lian)(lian)接(jie)(jie)管(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)（簡稱(cheng)對焊(han)(han)管(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)）、承(cheng)插焊(han)(han)連(lian)(lian)(lian)(lian)接(jie)(jie)管(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)（簡稱(cheng)承(cheng)插焊(han)(han)管(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)）、螺紋連(lian)(lian)(lian)(lian)接(jie)(jie)管(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)（簡稱(cheng)螺紋管(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)）、法(fa)蘭(lan)連(lian)(lian)(lian)(lian)接(jie)(jie)管(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)、卡套連(lian)(lian)(lian)(lian)接(jie)(jie)管(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)、卡箍連(lian)(lian)(lian)(lian)接(jie)(jie)管(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)、粘接(jie)(jie)連(lian)(lian)(lian)(lian)接(jie)(jie)管(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)、熱熔(rong)連(lian)(lian)(lian)(lian)接(jie)(jie)管(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)以及其他管(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)。在石油化工裝置(zhi)的(de)(de)配(pei)管(guan)(guan)(guan)(guan)(guan)設計中，常用(yong)(yong)對焊(han)(han)管(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)、支(zhi)管(guan)(guan)(guan)(guan)(guan)臺、承(cheng)插焊(han)(han)及螺紋連(lian)(lian)(lian)(lian)接(jie)(jie)管(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)的(de)(de)形式。法(fa)蘭(lan)管(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)多(duo)用(yong)(yong)于特殊配(pei)管(guan)(guan)(guan)(guan)(guan)場(chang)合(he)，使用(yong)(yong)范圍及數量相對比較少。可(ke)根據(ju)GB/T 17185《鋼制法(fa)蘭(lan)管(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)》的(de)(de)規定選用(yong)(yong)。

③. 按材料分類(lei)：

    a. 碳素(su)鋼(gang)管(guan)件(jian)(jian)；b. 合金(jin)鋼(gang)管(guan)件(jian)(jian)；c. 不銹鋼(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(zhu)鐵管(guan)件(jian)(jian)；g. 鍛(duan)鋼(gang)管(guan)件(jian)(jian)等(deng)。

④. 按(an)加工方式分：

    無縫、焊接、鍛制、鑄(zhu)造。

不銹(xiu)鋼管件(jian)的生產工藝

  管(guan)(guan)件(jian)的(de)分類和(he)規(gui)格非常多，生產工藝(yi)可能不同，了解管(guan)(guan)件(jian)的(de)基本(ben)生產工藝(yi)，對管(guan)(guan)件(jian)選用(yong)和(he)配管(guan)(guan)設(she)計有(you)一定(ding)的(de)用(yong)處。典型金屬管(guan)(guan)件(jian)的(de)生產工藝(yi)見圖4.6.2。