Kazhinji kune shamwari dzisinganzwisise hukama huripo pakati pezvirevo zve "DN", "Φ"uye"". Nhasi, ndichapfupikisa hukama huripo pakati pevatatu ava, ndichitarisira kukubatsira!
chii chinonzi "inch"
Inch (“) iyuniti inoshandiswa zvakanyanya muhurongwa hwekuAmerica, senge mapaipi esimbi,mavharuvhu, maflange, magokora, mapombi, matii, nezvimwewo, zvakaita se10″.
Inch (inch, yakapfupikiswa se in.) zvinoreva chigunwe chikuru muchiDutch, uye inchi kureba kwechigunwe chikuru. Ehe, kureba kwechigunwe chikuru kwakasiyanawo. Muzana remakore rechi14, Mambo Edward II vakaburitsa "Standard Legal Inch". Chirevo ndechekuti kureba kwetsanga nhatu hombe dzakasarudzwa kubva pakati pehura dzebhari uye dzakarongwa mumutsara inchi imwe chete.
Kazhinji 1″=2.54cm=25.4mm
Chii chinonzi DN
DN inzvimbo inoshandiswa zvakanyanya muChina nemuEurope, uye ndiyo nzira yekuisa mapaipi pachiratidzo,mavharuvhu, maflange, zvigadziko, uye mapombi, akadai seDN250.
DN inoreva dhayamita yepombi (inozivikanwawo sedhayamita yezita), cherechedza: iyi haisi dhayamita yekunze kana dhayamita yemukati, asi avhareji yedhayamita yekunze nedhayamita yemukati, inonzi avhareji yedhayamita yemukati.
ChiiΦ
Φ chinhu chakajairika, chinoreva dhayamita yekunze yemapaipi, kana magokora, simbi yakatenderera nezvimwe zvinhu.
Saka chii chiri pakati pavo?
Chekutanga, zvinoreva zvakanyorwa ne """ uye "DN" zvakafanana. Zvinoreva dhayamita yezita, zvichiratidza saizi yechinhu ichi, uyeΦ ndiko kusanganiswa kwezviviri izvi.
semuyenzaniso
Semuenzaniso, kana pombi yesimbi iri DN600, kana pombi yesimbi yakafanana ikanyorwa nemainchi, inova 24″. Pane hukama pakati pezviviri izvi here?
Mhinduro ndeyekuti hongu! Inji yose inhamba yakakwana uye yakapetwa zvakananga ne25 zvakaenzana neDN, zvakaita se1″*25=DN25, 2″*25=50, 4″*25=DN100, nezvimwewo. Ehe, kune dzakasiyana dzakadai se3″*25=75 Rounding iDN80, uye kune mamwe mainji ane masemicolons kana mapoinzi edecimal akadai se1/2″, 3/4″, 1-1/4″, 1-1/2″, 2-1/2″, 3-1/2″ nezvimwewo, izvi hazvigone kuverengerwa saizvozvo, asi kuverenga kwacho kwakafanana, chaizvoizvo kukosha kwakatarwa:
1/2″ = DN15
3/4″ = DN20
1-1/4″ = DN32
1-1/2″ = DN40
2″ = DN50
2-1/2″ = DN65
3″ = DN80
Nguva yekutumira: Kukadzi-03-2023
