化工(gong)鋼制(zhi)承插焊(han)管(guan)(guan)件是以美國和(he)日本(ben)管(guan)(guan)件相關(guan)標(biao)準為依據，并(bing)結合(he)我國化工(gong)行(xing)業實際情況制(zhi)定(ding)的一種專用(yong)管(guan)(guan)件標(biao)準，常用(yong)于小型管(guan)(guan)道。

1. 種(zhong)類

  承(cheng)(cheng)(cheng)插(cha)焊(han)(han)(han)管(guan)(guan)件(jian)種類包(bao)括承(cheng)(cheng)(cheng)插(cha)焊(han)(han)(han)90°彎頭、承(cheng)(cheng)(cheng)插(cha)焊(han)(han)(han)45°彎頭、承(cheng)(cheng)(cheng)插(cha)焊(han)(han)(han)三通、承(cheng)(cheng)(cheng)插(cha)焊(han)(han)(han)異徑(jing)(jing)三通、承(cheng)(cheng)(cheng)插(cha)焊(han)(han)(han)管(guan)(guan)接(jie)(jie)頭、承(cheng)(cheng)(cheng)插(cha)焊(han)(han)(han)異徑(jing)(jing)管(guan)(guan)接(jie)(jie)頭、承(cheng)(cheng)(cheng)插(cha)焊(han)(han)(han)半管(guan)(guan)接(jie)(jie)頭、承(cheng)(cheng)(cheng)插(cha)焊(han)(han)(han)管(guan)(guan)帽及承(cheng)(cheng)(cheng)插(cha)焊(han)(han)(han)活接(jie)(jie)頭等9種。

2. 規格

   管(guan)(guan)(guan)件規格以公(gong)稱(cheng)直徑(jing)表(biao)示。管(guan)(guan)(guan)件的公(gong)稱(cheng)直徑(jing)為1/2、3/4、1、11/4、11/2in，與它連接(jie)的管(guan)(guan)(guan)子(zi)為英制管(guan)(guan)(guan)子(zi)。但是，管(guan)(guan)(guan)件的承口孔和流通孔直徑(jing)按公(gong)制管(guan)(guan)(guan)尺寸加工(gong)后，可用于(yu)DN15、DN20、DN25、DN32及(ji)·DN40的公(gong)制管(guan)(guan)(guan)子(zi)。

3. 管件(jian)書寫名稱(cheng)

   管件書(shu)寫(xie)名稱采用英語縮寫(xie)詞(ci)組合(he)。管件書(shu)寫(xie)名稱見表17-1。