A cikin bututun bututun kayan aikin bututun bututun famfo da sauran ƙira ko siyan kayayyaki sau da yawa muna haɗuwa da DN, inci “, Φ da sauran raka'a, akwai abokai da yawa (musamman da yawa sababbin takalman masana'antu) don wannan rikice-rikice, ba zai iya bambanta samfurin ba, a yau muna zai taƙaita taƙaitaccen raka'a uku na takamaiman bincike na gunduma.
1.DN
"DN" abokai da yawa suna kuskuren tunanin diamita na ciki, hakika DN da diamita na ciki na wasu kusa, amma kawai kusa, ainihin ma'anarsa shine bututun, bututu, diamita mara kyau, diamita mara kyau (Nominal Diameter), kuma aka sani da matsakaicin diamita na waje (Ma'anar Waje Diamita), a zahiri, kusan matsakaicin diamita na waje ne.
A cikin ƙimar DN na gida shine ainihin gama gari, amma a cikin bututun, bututu da kayan aikin bawul na iya wakiltar wani sashi kawai, me yasa wani ɓangare na shi?Domin a cikin tsarin bututun gida, ana iya samun nau'ikan diamita na waje guda biyu a cikin bututun da aka yiwa alama DN (Φ shine diamita na waje na bututu ko bututun, za mu yi bayani daga baya), kamar DN100, akwai jerin I da jerin II (har ila yau. yana da amfani don yin alama A jerin da jerin B), jerin I da A jerin DN100 shine Φ114.3, yayin da jerin II da jerin B na DN100 shine Φ108.Idan ba ku ƙididdige diamita na waje na bututu Φ bayan DN lokacin gabatar da shirin da cikakkun bayanai ba, kuna buƙatar bayyana shi ko jerin I (A jerin) ko jerin II (B jerin) lokacin yin alama tare da DN, don haka a bayyane yake a cikin tsarin siye da bincike, kuma zaku iya sanin irin bututu ko dacewa da diamita na waje da kuke so ba tare da sadarwa da tabbatarwa ba.
2. Inci
Inch” naúrar daular da aka fi amfani da ita a Amurka da Turai, ita ma naúrar ce, tabbas tana da bututun Tube da Tube, a yau za mu yi bayani dalla-dalla ajin Pipe na bututu da kayan aiki, daga baya za a gabatar da, Pipe pipe da Tube. musamman bututu bambanci.
A cikin bututun bututu, inch ba kamar naúrar DN bane don bambanta diamita na waje na nau'ikan bututu guda biyu, yanki ne bayyananne, kamar 4 ″ a bayyane yake nuni shine diamita na waje 114.3, kuma 10″ shine Φ273, don haka muddin bututu ko kayan aiki da aka kwatanta ta inch za a iya sanin su a fili ba tare da tabbatar da girman diamita na bututun da ake buƙata ba.
3. Diamita Φ
Alamar diamita ita ce "Φ", wanda ke cikin harafin Girkanci, mai suna "fai", kuma yana da dangantaka ta kud da kud da biyun da suka gabata, saboda yana iya maye gurbin na'urorin ganowa guda biyu na sama, da bututun ko bututu ta amfani da Φ. ita ce mafi bayyananne, kuma ita ce mafi kai tsaye ba tare da tuba ba, kamar Φ219, Φ508, Φ1020, da sauransu. Wannan hanyar ganowa kuma ta fi girma.
Lokacin aikawa: Maris 24-2023
