“Inch” tih hi eng nge ni: Inch (“) hi American system-a specification unit hman tlanglawn tak a ni a, chu chu steel pipe, valve, flange, elbow, pump, tees, etc. te, specification 10′′ ang chi te hi a ni.
Inch khat vel a nies (inch, abbreviated as in.) tih hian Dutch tawngin kutpui tihna a ni a, inch khat chu kutpui sei zawng a ni. Dik tak chuan mihring kutpui sei zawng pawh a inang lo. Kum zabi 14-naah khan Lal Edward II chuan “standard legal inch” a tichhuak a.
Barley beng lai tak atanga thlai lian ber pathum thlan chhuah leh a zawna dah te sei zawng chu inch khat a nih thu a sawi.
A tlangpuiin 1′′=2.54cm=25.4mm a ni
DN chu eng nge ni: DN hi Chinese leh European system-a hman tlanglawn tak specification unit a ni. Pipe, valve, flange, pipe fitting leh pump, DN250 ang chi te hriat theihna tur specification a ni bawk.
DN hian pipe-a nominal diameter (nominal diameter tia hriat bawk) a kawk a, hre reng ang che: hei hi pawn lam diameter emaw chhung lam diameter emaw a ni lo va, pawn lam diameter leh chhung lam diameter average a ni a, chu chu average inner diameter an ti a ni.
Φ chu eng nge ni: Φ hi general unit a ni a, hei hian pipe, elbow, round steel leh thil dang pawn lam diameter a kawk a ni. Diameter a ni tih pawh sawi theih a ni. Entirnan, Φ609.6mm hian pawn lam diameter 609.6mm a kawk a ni.
Tunah chuan heng unit pathumte hian eng nge an entîr tih kan chhui chhuak tawh a, eng nge an inzawmna?
A hmasa berah chuan ““DN” awmzia hi DN awmzia nen a inang tlangpui a, a bul berah chuan nominal diameter tihna a ni a, hei hian he specification lian tham tak a tarlang a, Φ chu a pahnih inzawmkhawmna a ni.
Entirnan: steel pipe pakhat chu DN600 a nih chuan, chu steel pipe chu inches hmanga chhinchhiah a nih chuan 24′′ a lo ni ta a ni. An pahnih inkarah hian inzawmna a awm em?
A chhanna chu a ni! General inch chu integer chu 25-a direct multiplication a ni a, chu chu DN nen a inang a, chu chu 1′′*25=DN25 2′′*25=50 4′′*25=DN100 leh a dangte a ni.
Dik tak chuan a hrang hrang a awm bawk a, chu chu 3′′*25=75, DN80 hnai ber thlenga rounded, leh inches thenkhat semicolon emaw decimal point nei, 1/2′′ 3/4′′ 1-1/4′′ 1-1/2′′ 2-1 /2′′ 3-1/2′′, etc. te pawh a awm a, hengte hi chutiang chuan chhut theih a ni lo, mahse calculation chu a tlangpuiin a inang vek a, a bul berah chuan value tarlan chu:
1/2′′=DN15 3/4′′=DN20 1-1/4′′=DN32 1-1/2′′=DN40 2-1/2′′=DN65 3-1/2′′=DN90
Post hun chhung: Mar-10-2022
