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. 按用途分類，見表4.6.1。

 ②. 按連接形(xing)式分類(lei)：

     根據(ju)不銹鋼(gang)管(guan)(guan)(guan)件(jian)(jian)(jian)端部連(lian)接形式可(ke)將管(guan)(guan)(guan)件(jian)(jian)(jian)分為(wei)對(dui)焊連(lian)接管(guan)(guan)(guan)件(jian)(jian)(jian)（簡(jian)(jian)稱(cheng)對(dui)焊管(guan)(guan)(guan)件(jian)(jian)(jian)）、承插焊連(lian)接管(guan)(guan)(guan)件(jian)(jian)(jian)（簡(jian)(jian)稱(cheng)承插焊管(guan)(guan)(guan)件(jian)(jian)(jian)）、螺紋連(lian)接管(guan)(guan)(guan)件(jian)(jian)(jian)（簡(jian)(jian)稱(cheng)螺紋管(guan)(guan)(guan)件(jian)(jian)(jian)）、法(fa)蘭(lan)連(lian)接管(guan)(guan)(guan)件(jian)(jian)(jian)、卡套連(lian)接管(guan)(guan)(guan)件(jian)(jian)(jian)、卡箍(gu)連(lian)接管(guan)(guan)(guan)件(jian)(jian)(jian)、粘接連(lian)接管(guan)(guan)(guan)件(jian)(jian)(jian)、熱熔連(lian)接管(guan)(guan)(guan)件(jian)(jian)(jian)以及(ji)其他管(guan)(guan)(guan)件(jian)(jian)(jian)。在石油化(hua)工裝置的(de)配管(guan)(guan)(guan)設(she)計(ji)中，常(chang)用(yong)(yong)對(dui)焊管(guan)(guan)(guan)件(jian)(jian)(jian)、支(zhi)管(guan)(guan)(guan)臺、承插焊及(ji)螺紋連(lian)接管(guan)(guan)(guan)件(jian)(jian)(jian)的(de)形式。法(fa)蘭(lan)管(guan)(guan)(guan)件(jian)(jian)(jian)多(duo)用(yong)(yong)于特(te)殊(shu)配管(guan)(guan)(guan)場(chang)合，使用(yong)(yong)范圍及(ji)數量相對(dui)比較(jiao)少。可(ke)根據(ju)GB/T 17185《鋼(gang)制法(fa)蘭(lan)管(guan)(guan)(guan)件(jian)(jian)(jian)》的(de)規定選用(yong)(yong)。

③. 按(an)材料分類(lei)：

    a. 碳(tan)素鋼管(guan)(guan)件(jian)(jian)(jian)；b. 合金鋼管(guan)(guan)件(jian)(jian)(jian)；c. 不(bu)銹鋼管(guan)(guan)件(jian)(jian)(jian)；d. 塑料管(guan)(guan)件(jian)(jian)(jian)；e. 橡膠管(guan)(guan)件(jian)(jian)(jian)；f. 鑄鐵(tie)管(guan)(guan)件(jian)(jian)(jian)；g. 鍛(duan)鋼管(guan)(guan)件(jian)(jian)(jian)等(deng)。

④. 按加工方式分(fen)：

    無縫、焊接、鍛制、鑄(zhu)造。

不銹(xiu)鋼管件的生產工藝

  管(guan)件(jian)的(de)分類和規格非(fei)常(chang)多，生(sheng)產工藝(yi)可能不(bu)同，了(le)解管(guan)件(jian)的(de)基本(ben)生(sheng)產工藝(yi)，對管(guan)件(jian)選用和配(pei)管(guan)設計有一定的(de)用處。典型金屬管(guan)件(jian)的(de)生(sheng)產工藝(yi)見圖(tu)4.6.2。