Dhayamita yevharuvhu Φ, dhayamita DN, inch” Unogona here kusiyanisa aya maratidziro ezvikamu?

Kune kazhinji shamwari dzisinganzwisisi hukama pakati pezvakatemwa zve "DN", "Φ” uye “”.” Nhasi, ndichapfupikisa hukama huri pakati pevatatu kwauri, ndichitarisira kukubatsira!

chii chinonzi inchi"

Inch (") inowanzoshandiswa kutsanangura chikamu muAmerican system, senge pombi dzesimbi,mavharuvhu, maflange, magokora, pombi, matei, nezvimwewo, senge rondedzero ndeye 10 ″.

Inch (inch, shorted as in.) zvinoreva chigunwe muchiDutch, uye inchi kureba kwechigunwe.Zvechokwadi, kureba kwechigunwe kwakasiyanawo.Muzana ramakore rechi 14, King Edward II akazivisa "Standard Legal Inch".Chirevo ndechekuti kureba kwezviyo zvitatu zvakakura zvakasarudzwa kubva pakati pehura dzebhari uye zvakarongwa mumutsara inchi imwe.

Kazhinji 1″=2.54cm=25.4mm

Chii chinonzi DN

DN inzvimbo inowanzo shandiswa yekutsanangura muChina neEuropean masisitimu, uye zvakare ndiyo yakatarwa yekumaka pombi,mavharuvhu, flanges, fittings, uye pombi, zvakadaiDN250.

DN inoreva dhayamita rezita repombi (inozivikanwawo sezita rekuti dhayamita), cherechedza: iyi haisi iyo dhayamita yekunze kana dhayamita yemukati, asi avhareji yedhayamita yekunze uye dhayamita yemukati, inonzi avhareji yemukati dhayamita.

ChiiΦ

Φ chinhu chakajairwa, icho chinoreva dhayamita rekunze repombi, kana magokora, simbi yakatenderera nezvimwe zvinhu.

Saka chii chakabatana pakati pavo?

Chekutanga, zvirevo zvinomakwa na“”” uye “DN” zvakada kufanana. Zvinoreva dhayamita yezita, zvichiratidza ukuru hwechirevo ichi, uyeΦ ndiko kusanganiswa kwezviviri.

semuyenzaniso

Semuyenzaniso, kana pombi yesimbi iri DN600, kana imwe pombi yesimbi yamaka nemainches, inova 24″.Pane kubatana here pakati pezviviri izvi?

Mhinduro ndihongu!Inchi yese iinhamba uye yakapetwa ne25 yakaenzana neDN, senge 1″*25=DN25, 2″*25=50, 4″*25=DN100, zvichingodaro. Chokwadi, kune akasiyana akadai se3″ *25=75 Rounding is DN80, uye kune mamwe mainji ane semicolons kana mapoinzi echigumisiro senge 1/2″, 3/4″, 1-1/4″, 1-1/2″, 2-1/2″ , 3-1/ 2″ zvichingodaro, izvi hazvigone kuverengerwa saizvozvo, asi kuverenga kwakangofanana, kunyanya kukosha kwakataurwa:

1/2″=DN15

3/4″=DN20

1-1/4″=DN32

1-1/2″=DN40

2″=DN50

2-1/2″=DN65

3″=DN80