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(jie)形式(shi)分(fen)類：

     根據不(bu)銹(xiu)鋼管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)(jian)端部連(lian)(lian)(lian)接(jie)(jie)(jie)形式(shi)可將(jiang)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)(jian)分為(wei)對焊連(lian)(lian)(lian)接(jie)(jie)(jie)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)(jian)（簡稱對焊管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)(jian)）、承(cheng)插(cha)(cha)焊連(lian)(lian)(lian)接(jie)(jie)(jie)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)(jian)（簡稱承(cheng)插(cha)(cha)焊管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)(jian)）、螺紋(wen)(wen)連(lian)(lian)(lian)接(jie)(jie)(jie)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)(jian)（簡稱螺紋(wen)(wen)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)(jian)）、法(fa)蘭(lan)連(lian)(lian)(lian)接(jie)(jie)(jie)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)(jian)、卡套連(lian)(lian)(lian)接(jie)(jie)(jie)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)(jian)、卡箍連(lian)(lian)(lian)接(jie)(jie)(jie)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)(jian)、粘接(jie)(jie)(jie)連(lian)(lian)(lian)接(jie)(jie)(jie)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)(jian)、熱熔連(lian)(lian)(lian)接(jie)(jie)(jie)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)(jian)以(yi)及(ji)其他(ta)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)(jian)。在石油化工(gong)裝(zhuang)置的配管(guan)(guan)(guan)(guan)(guan)(guan)設計中，常用對焊管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)(jian)、支管(guan)(guan)(guan)(guan)(guan)(guan)臺(tai)、承(cheng)插(cha)(cha)焊及(ji)螺紋(wen)(wen)連(lian)(lian)(lian)接(jie)(jie)(jie)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)(jian)的形式(shi)。法(fa)蘭(lan)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)(jian)多用于特殊配管(guan)(guan)(guan)(guan)(guan)(guan)場合，使用范圍及(ji)數(shu)量(liang)相對比(bi)較(jiao)少。可根據GB/T 17185《鋼制(zhi)法(fa)蘭(lan)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)(jian)(jian)》的規定選(xuan)用。

③. 按材料分類：

    a. 碳素(su)鋼管(guan)(guan)(guan)件(jian)；b. 合金鋼管(guan)(guan)(guan)件(jian)；c. 不(bu)銹鋼管(guan)(guan)(guan)件(jian)；d. 塑料管(guan)(guan)(guan)件(jian)；e. 橡膠管(guan)(guan)(guan)件(jian)；f. 鑄鐵(tie)管(guan)(guan)(guan)件(jian)；g. 鍛鋼管(guan)(guan)(guan)件(jian)等(deng)。

④. 按加工方式分：

    無縫、焊接、鍛制、鑄造(zao)。

不銹鋼管件的生(sheng)產(chan)工(gong)藝

  管件(jian)的(de)分類和(he)規(gui)格非常(chang)多，生產工藝可能不同(tong)，了解管件(jian)的(de)基本生產工藝，對管件(jian)選用和(he)配管設(she)計有一(yi)定(ding)的(de)用處。典型(xing)金(jin)屬管件(jian)的(de)生產工藝見圖4.6.2。