化工(gong)鋼制承(cheng)插焊管(guan)(guan)件(jian)是以(yi)美(mei)國(guo)和日(ri)本(ben)管(guan)(guan)件(jian)相關標(biao)準為依(yi)據，并結合我國(guo)化工(gong)行業(ye)實際情況制定(ding)的一種專用(yong)(yong)管(guan)(guan)件(jian)標(biao)準，常用(yong)(yong)于小型管(guan)(guan)道(dao)。

1. 種類

  承(cheng)(cheng)(cheng)(cheng)插(cha)(cha)焊(han)(han)(han)管(guan)(guan)(guan)件種(zhong)類(lei)包括承(cheng)(cheng)(cheng)(cheng)插(cha)(cha)焊(han)(han)(han)90°彎頭(tou)、承(cheng)(cheng)(cheng)(cheng)插(cha)(cha)焊(han)(han)(han)45°彎頭(tou)、承(cheng)(cheng)(cheng)(cheng)插(cha)(cha)焊(han)(han)(han)三通、承(cheng)(cheng)(cheng)(cheng)插(cha)(cha)焊(han)(han)(han)異(yi)徑三通、承(cheng)(cheng)(cheng)(cheng)插(cha)(cha)焊(han)(han)(han)管(guan)(guan)(guan)接(jie)(jie)頭(tou)、承(cheng)(cheng)(cheng)(cheng)插(cha)(cha)焊(han)(han)(han)異(yi)徑管(guan)(guan)(guan)接(jie)(jie)頭(tou)、承(cheng)(cheng)(cheng)(cheng)插(cha)(cha)焊(han)(han)(han)半管(guan)(guan)(guan)接(jie)(jie)頭(tou)、承(cheng)(cheng)(cheng)(cheng)插(cha)(cha)焊(han)(han)(han)管(guan)(guan)(guan)帽及承(cheng)(cheng)(cheng)(cheng)插(cha)(cha)焊(han)(han)(han)活(huo)接(jie)(jie)頭(tou)等9種(zhong)。

2. 規格

   管(guan)件規格以公稱直徑(jing)表示。管(guan)件的公稱直徑(jing)為1/2、3/4、1、11/4、11/2in，與它(ta)連接(jie)的管(guan)子為英制(zhi)管(guan)子。但是，管(guan)件的承(cheng)口孔和流通(tong)孔直徑(jing)按公制(zhi)管(guan)尺寸加工(gong)后，可用于(yu)DN15、DN20、DN25、DN32及·DN40的公制(zhi)管(guan)子。

3. 管(guan)件(jian)書(shu)寫(xie)名稱

   管件(jian)書寫(xie)名稱采用英語(yu)縮寫(xie)詞組合。管件(jian)書寫(xie)名稱見表17-1。