Rarraba bututun Φ, DN, da inci cikin sauri

A cikin ƙira da siyan bututu, kayan haɗin bututu da bawuloli, Φ, DN da inci (“) raka'o'i uku ne na ƙayyadaddun bayanai waɗanda ke cikin sauƙin rikicewa. Babban bambancinsu shine: Φ yana wakiltar ainihin diamita na waje na zahiri, DN shine lambar ƙayyadaddun bayanai a cikin tsarin ma'auni, kuma inci shine lambar ƙayyadaddun bayanai a cikin tsarin mulkin mallaka. Na gaba, an bayyana cikakkun bambance-bambance da haɗin kai tsakanin ukun:

1. Bambance-bambance a cikin ma'anoni na asali

Φ (diamita):Φ shine harafin Girkanci wanda a fannin injiniyanci yake wakiltar ainihin diamita na zahiri (yawanci diamita na waje). Ita ce mafi sauƙin ganewa kuma ba ta buƙatar juyawa. Misali, Φ114.3 yana nufin cewa ainihin diamita na waje na bututun shine 114.3mm.

DN (Diamita Mai Suna):DN (Diamita Mai Suna) shine diamita mara suna a cikin tsarin ma'auni. Ba diamita na ciki bane ko diamita na waje, amma "girman mara suna" wanda aka ƙayyade ta hanyar wucin gadi don sauƙin haɗawa (kimanin matsakaicin diamita na ciki da diamita na waje). Misali, DN100 kawai lambar takamaiman bayani ne kuma ainihin diamita na waje na iya zama 114.3mm ko 108mm.

Inci (“):Inci raka'a ce ta tsayi a cikin tsarin mulkin mallaka (inci 1 = 25.4mm). A cikin bututu, yana wakiltar diamita mara iyaka. Misali, inci 4 yana wakiltar bututu mai inci 4, kuma ainihin diamita na waje an saita shi a 114.3mm.

2. Bayyananne da keɓancewar ganewa

Φ Mafi bayyananne:ainihin diamita na waje an yi masa alama kai tsaye, abin da ka gani shine abin da ka samu, babu wata shubuha.

Inci sun fi takamaiman:A cikin bututun Birtaniya (Bututu), diamita na waje wanda ya yi daidai da inci yana da ban mamaki. Misali, inci 4 shine Φ114.3, inci 10 shine Φ273, babu buƙatar ƙarin tabbaci.

Akwai rashin tabbas a cikin DN:Ƙimar DN iri ɗaya na iya dacewa da jerin diamita daban-daban guda biyu na waje a cikin tsarin bututun mai na cikin gida. Misali DN100:

- Jerin I (Jerin A/na ƙasashen waje):Diamita na waje shine Φ114.3mm

- Jerin II (Jerin B/amfani a cikin gida):diamita na waje shine Φ108mm

Saboda haka, lokacin siye ko zane, idan ka rubuta DN100 kawai, dole ne ka nuna ko jerin I ne ko jerin II, in ba haka ba yana da sauƙi a sayi samfurin da bai dace ba.

3. Alaƙar rubutu da juyawa tsakanin ukun

Ba za a iya canza waɗannan ukun ta hanyar ninkawa da raba lissafi mai sauƙi ba (misali, ba za ku iya amfani da DN100 / 25.4 kai tsaye don ƙididdige inci ba), amma dole ne ku dogara da teburin kwatancen masana'antu na yau da kullun.

4. Yanayi masu dacewa da ƙayyadaddun lakabi

DN:Ana amfani da shi sosai a cikin bututun ƙarfe (wanda aka yi da galvanized ko wanda ba a yi da galvanized ba), bututun ƙarfe na siminti, bututun filastik, da sauransu.

Φ:Ana amfani da shi sosai a cikin bututun ƙarfe marasa sumul, bututun ƙarfe na bakin ƙarfe, bututun ƙarfe marasa ƙarfe, da sauransu. Lokacin yin alama, yawanci ana amfani da shi tare da kauri na bango, kamar Φ108×4 (ma'ana diamita na waje 108mm, kauri na bango 4mm).

Inci:Ana amfani da shi galibi a cikin bututu da kayan haɗin bawul a cikin tsarin Amurka da Turai, da kuma a fannoni na masana'antu na gargajiya kamar mai da iskar gas.

5. Takaitawa

Φ:Yana wakiltar ainihin diamita na waje na bututun. Don zaɓar daidaitawabawul ɗin malam buɗe ido, bawul ɗin ƙofa, kumabawul ɗin duba, kawai duba ainihin diamita na waje na bututun kai tsaye.

DN:Lambar diamita ta ma'auni ce kawai. Lokacin siyan bawuloli, tabbatar da tabbatar da jerin A/I da B/II don guje wa gazawar haɗa finjin.TWSkayayyakibawuloli na malam buɗe ido, bawuloli na ƙofa, duba bawulolida sauran kayayyaki. Lokacin yin oda, dole ne a ƙayyade sigogin jerin don tabbatar da daidaiton bututun.

Inci (“):Diamita na Burtaniya mara suna, galibi ana amfani da shi don bawuloli da aka shigo da su daga ƙasashen waje. Ba za a iya amfani da 25.4 kawai don canza diamita na waje kai tsaye ba. Yana buƙatar a tabbatar da shi ta hanyar komawa ga teburin da aka saba.