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(xiu)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. 按連接形式(shi)分類：

     根(gen)(gen)據不銹鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)端(duan)部(bu)連接(jie)(jie)形式(shi)可(ke)將管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)分(fen)為對焊(han)連接(jie)(jie)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)（簡稱對焊(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)）、承插(cha)焊(han)連接(jie)(jie)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)（簡稱承插(cha)焊(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)）、螺(luo)紋(wen)連接(jie)(jie)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)（簡稱螺(luo)紋(wen)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)）、法蘭(lan)連接(jie)(jie)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)、卡套連接(jie)(jie)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)、卡箍連接(jie)(jie)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)、粘接(jie)(jie)連接(jie)(jie)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)、熱熔連接(jie)(jie)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)以及其他管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)。在石(shi)油化工裝置的配(pei)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)設計中，常用對焊(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)、支管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)臺、承插(cha)焊(han)及螺(luo)紋(wen)連接(jie)(jie)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)的形式(shi)。法蘭(lan)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)多用于特殊配(pei)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)場合，使用范(fan)圍及數量(liang)相對比(bi)較少。可(ke)根(gen)(gen)據GB/T 17185《鋼(gang)(gang)制(zhi)法蘭(lan)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)》的規(gui)定選用。

③. 按材料分(fen)類：

    a. 碳(tan)素(su)鋼管(guan)件(jian)；b. 合金鋼管(guan)件(jian)；c. 不銹鋼管(guan)件(jian)；d. 塑(su)料管(guan)件(jian)；e. 橡膠管(guan)件(jian)；f. 鑄(zhu)鐵管(guan)件(jian)；g. 鍛(duan)鋼管(guan)件(jian)等。

④. 按加工方式分：

    無縫、焊接、鍛(duan)制、鑄造。

不銹(xiu)鋼(gang)管件的生產工藝

  管(guan)件(jian)的(de)分類和規格(ge)非常(chang)多，生(sheng)產工藝可能不(bu)同，了解管(guan)件(jian)的(de)基本生(sheng)產工藝，對(dui)管(guan)件(jian)選用(yong)和配(pei)管(guan)設計(ji)有一(yi)定的(de)用(yong)處(chu)。典型金(jin)屬管(guan)件(jian)的(de)生(sheng)產工藝見圖4.6.2。