“Inch” timi cu zeidah a si: Inch (“) cu American system caah a tlangpi in hmanmi thilri pakhat a si, cu hna cu thir pipe, valve, flanges, elbows, pumps, tees, tbk., cu hna cu 10′′ a si.
Inches (inch, a tawinak in in.) cu Dutch holh in kutdonghrolh tinak a si, cun inch pakhat cu kutdonghrolh sauhnak a si. A ngaingai ti ahcun, minung kutdong sau zong aa dang. Kum zabu 14 ah, Siangpahrang Edward II nih “a tlarimi phungning inch” a chuah.
Barley hnah laifang in thimmi le tlar in chiahmi a ngan bikmi rawl kung pathum hna an sauhnak cu inch pakhat a si lai tiah khiah a si.
A tlangpi in 1′′=2.54cm=25.4mm
DN timi cu zeidah a si: DN cu Tuluk le European system ah hman tawnmi thilri tthencheunak unit a si. DN250 tibantuk pipe, valve, flanges, pipe fittings le pump pawl hngalh khawhnak caah a hleiin hmanmi zong a si.
DN nih pipe i a min in a kauhnak kha a chim duhmi a si (a min in a kauhnak tiah auhmi zong a si), hngalhternak: hi cu lenglei kauhnak zong a si lo, a chunglei kauhnak zong a si lo, lenglei kauhnak le chunglei kauhnak karlak a si, a tlangpi in chunglei kauhnak tiah auhmi a si.
Φ cu zeidah a si: Φ cu a tlangpi in a si, cucu pipe, elbows, thir round le thilri dangdang hna i an lenglei diameter kha a chim duhmi a si. Diameter zong a si tiah ti khawh a si. Tahchunhnak ah, Φ609.6mm nih a lenglei kauhnak 609.6mm kha a chim duhmi a si.
Atu cu hi unit pathum nih zeidah an aiawh ti kan hngalh cang caah, an karlak pehtlaihnak cu zeidah a si?
Pakhatnak ah, ““DN” sullam cu DN he aa khat dih, a hrampi in a sullam cu a min in a kauh ning a si, mah nih hi langhternak a ngan le a hme a langhter, cun Φ cu an pahnih fonh ding a si.
Tahchunhnak ah: thir pipe cu DN600 a si ahcun, cun cu thir pipe lila cu inches in hmelchunh a si ahcun, 24′′ ah a cang. Mah pahnih karlak ah pehtlaihnak a um maw?
A phi cu a si! A tlangpi inch cu DN he aa tlukmi nambar kha 25 in direct in karhternak a si, cu hna cu 1′′*25=DN25 2′′*25=50 4′′*25=DN100 tibantuk an si.
A ngaingai ti ahcun, a dangdang zong an um, cu hna cu 3′′*25=75, a nai bik DN80 tiang a tlongmi, cun inches cheukhat cu semicolons asiloah decimal points he, cu hna cu 1/2′′ 3/4′′ 1-1/4′′ 1-1/2′′ 2-1/4′′ 1-1/2′′ 2-1 /2′′ 3-1/2′′ tbk, cu bantuk in tuak khawh an si lo. asinain tuaktannak cu aa khat dih, a tlangpi in langhtermi man:
1/2′′=DN15 3/4′′=DN20 1-1/4′′=DN32 1-1/2′′=DN40 2-1/2′′=DN65 3-1/2′′=DN90
Post caan: Mar-10-2022
