ʻO ka Helium Pipe Series

ʻO ka wehewehe pōkole:

Hoʻohana ʻia ʻo Vacuum Insulated Pipe (VI Piping), ʻo ia hoʻi ʻo Vacuum Jacketed Pipe (VJ Piping) no ka hoʻoili ʻana i ka oxygen wai, wai nitrogen, argon wai, hydrogen wai, helium wai, LEG a me LNG, ma ke ʻano he mea kūpono loa no ka hoʻopili ʻana o ka paipu maʻamau.

  • Hoʻololi Helium maikaʻi loa: ʻO kā mākou Liquid Helium Pipe Series e hōʻoiaʻiʻo i ka hoʻololi ʻana a me ka maikaʻi o ka helium wai, e pale ana i ka poho a i ʻole ka pau ʻana i ka wā o ke kaʻina hana.
  • Kūleʻa Kiʻekiʻe: Kūkulu ʻia me nā mea waiwai, hāʻawi kā mākou paipu i ka lōʻihi maikaʻi loa a me ke kūʻē ʻana i nā mahana cryogenic kiʻekiʻe, e hōʻoiaʻiʻo ana i ka hana lōʻihi a me ka paʻa.
  • Nā koho koho: Hoʻomaopopo mākou i nā pono like ʻole o nā ʻōnaehana cryogenic. No laila, hiki ke hana ʻia kā mākou Liquid Helium Pipe Series e like me nā koi kikoʻī, me ke anawaena paipu, ka lōʻihi, a me nā mea hoʻopau.
  • Ka mālama haʻahaʻa: Pono kā mākou mau paipu i ka mālama liʻiliʻi, e hōʻemi ana i ka downtime a hoʻonui i ka huahana holoʻokoʻa no nā hana cryogenic.
  • ʻO ka hōʻoia maikaʻi loa: Me ka manaʻo nui i ka mana o ka maikaʻi, ua hana ko mākou Liquid Helium Pipe Series i nā hoʻokolohua koʻikoʻi e hōʻoia i ka hoʻokō ʻana i nā kūlana ʻoihana, e hāʻawi ana i kā mākou mea kūʻai aku i nā huahana hilinaʻi a hilinaʻi.

Huahana Huahana

Huahana Huahana

Hoʻololi Helium maikaʻi loa: Ua hoʻolālā ʻia kā mākou Liquid Helium Pipe Series e hoʻomaʻamaʻa i ka hoʻoili helium pono. Me ka ʻili o loko a me ka hoʻolālā kahe holomua, hoʻemi lākou i ke kū'ē, hāʻule ke kaomi, a hōʻoia i ka hoʻololi kiʻekiʻe o ka helium wai me ka ʻole o ka pohō.

Hana Kiʻekiʻe Kiʻekiʻe: Hoʻohana mākou i nā mea waiwai e like me ke kila kila a me nā alloys kiʻekiʻe i ke kūkulu ʻana i kā mākou Liquid Helium Pipes. Mālama kēia i ka lōʻihi, ke kū'ē i nā wela wela, a me ke kū'ē i ka corrosion, e hōʻoiaʻiʻo ana i kahi huahana lōʻihi a hilinaʻi.

Nā Koho Hoʻohālikelike: Hāʻawi mākou i nā koho hoʻoponopono no kā mākou Liquid Helium Pipe Series, e ʻae ana i nā mea kūʻai aku e koho i ke anawaena kūpono, ka lōʻihi, a me nā mea hoʻopau e pili ana i kā lākou mau koi kūikawā. ʻO kēia maʻalahi e hōʻoia i ka hoʻohui pono ʻana i kekahi ʻōnaehana cryogenic.

Mālama Haʻahaʻa: Hoʻolālā ʻia kā mākou Liquid Helium Pipes no ka hana pilikia ʻole a koi i ka mālama liʻiliʻi. ʻAʻole kēia e hōʻemi wale i ka downtime akā hoʻomaikaʻi pū i ka hana holoʻokoʻa a me ka huahana o nā kaʻina cryogenic.

ʻO ka hōʻoia maikaʻi loa: ʻO kā mākou kaʻina hana e pili ana i nā ana mana koʻikoʻi, e hōʻoia ana i nā kūlana kiʻekiʻe loa no kā mākou Liquid Helium Pipe Series. Hoʻomaʻamaʻa ʻia kēlā me kēia paipu i nā hoʻokolohua meticulous e hāʻawi i ka hana hilinaʻi a maikaʻi hoʻi i nā noi cryogenic.

wikiō

ʻO ka paipu hoʻoheheʻe ʻia ʻana o ke kino

ʻO ka paipu hoʻoheheʻe ʻia ʻo Vacuum Insulated Pipe (VI Piping), ʻo ia hoʻi ʻo Vacuum Jacketed Pipe (VJ Piping), ma ke ʻano he pani kūpono no ka hoʻopili ʻana i ka paipu maʻamau. Ke hoʻohālikelike ʻia me ka insulation paipu maʻamau, ʻo ka waiwai leakage wela o VIP he 0.05 ~ 0.035 mau manawa o ka insulation piping maʻamau. E mālama nui i ka ikehu a me ke kumukūʻai no nā mea kūʻai.

ʻO ka huahana huahana o Vacuum Jacketed Pipe, Vacuum Jacketed Hose, Vacuum Jacketed Valve, a me ka Phase Separator ma HL Cryogenic Equipment Company, i hele i ke ʻano o nā ʻenehana loea koʻikoʻi, hoʻohana ʻia no ka hoʻololi ʻana i ka oxygen wai, wai nitrogen, argon wai, wai hydrogen, wai helium, LEG a me LNG, a ua lawelawe keia mau huahana no ka cryogenic lako (eg cryogenic pahu, dewars a me nā pahu anuanu etc.) i loko o nā 'oihana o ka ea kaawale, kinoea, ea, uila, superconductor, chips, automation hui, meaʻai & mea inu, lāʻau lapaʻau, haukapila, biobank, rubber, hou mea hana ʻenekinia kemika, hao & kila, a me ka noiʻi ʻepekema etc.

ʻEkolu ʻAno Hoʻohui o VI Piping

ʻO nā ʻano pili ʻekolu ma aneʻi pili wale i nā kūlana pili ma waena o nā paipu VI. Ke hoʻohuiʻia ka VI Pipe me nā mea hana, ka pahu mālama a me nā mea'ē aʻe, hiki ke hoʻololi i ka hui pili e like me nā koi o ka mea kūʻai.

I mea e hoʻonui ai i nā pono like ʻole o nā mea kūʻai aku, ua hoʻomohala ʻo Vacuum Insulated Pipe i ʻekolu mau ʻano pili, ʻo ia ka Vacuum Bayonet Connection Type me nā Clamps, Vacuum Bayonet Connection Type me Flanges a me nā Bolts a me Welded Connection Type. Loaʻa iā lākou nā pono like ʻole a kūpono i nā kūlana hana like ʻole.

Lai o ka noi

VʻAno Hoʻohui Bayonet acuum me nā Paʻi

ʻAno Hoʻohui Bayonet Vacuum me nā Flanges a me nā Bolts

ʻAno Hoʻohui Welded

ʻAno Hoʻohui

ʻO nā pipili

Nā Flange a me nā Bolts

Weld

ʻAno hoʻokolo ma nā hono

Māmā

Māmā

ʻO ka perlite a i ʻole ka Vacuum

Hoʻomaʻamaʻa ʻia ma ka pūnaewele

No

No

ʻAe, hoʻopiha ʻia ka perlite i loko a i ʻole hoʻomāmā i waho mai nā Sleeves Insulated ma nā hono.

Anawaena inoa o ka paipu loko

DN10(3/8")~DN25(1")

DN10(3/8")~DN80(3")

DN10(3/8")~DN500(20")

Pumi Hoʻolālā

≤8 pā

≤16 pā

≤64 pā

Hoʻokomo

maʻalahi

maʻalahi

Weld

Hoʻolālā Mahana

-196 ℃~ 90 ℃ (LH2 & LHe:-270 ℃ ~ 90 ℃)

Ka lōʻihi

1 ~ 8.2 mika/pcs

Mea waiwai

300 moʻo kila kila

Kauwaena

LN2, LOX, LAr, LHe, LH2, WAEWA, LNG

Ka Lahui Huahana

Huahana

Hōʻike

Hoʻohui ʻia ʻo Vacuum Bayonet me nā pipili

Hoʻohui ʻia ʻo Vacuum Bayonet me nā Flanges a me nā Bolts

Weld Insulated Connection

Paipu hoʻoheheʻe ʻia

DN8

ʻAE

ʻAE

ʻAE

DN15

ʻAE

ʻAE

ʻAE

DN20

ʻAE

ʻAE

ʻAE

DN25

ʻAE

ʻAE

ʻAE

DN32

/

ʻAE

ʻAE

DN40

/

ʻAE

ʻAE

DN50

/

ʻAE

ʻAE

DN65

/

ʻAE

ʻAE

DN80

/

ʻAE

ʻAE

DN100

/

/

ʻAE

DN125

/

/

ʻAE

DN150

/

/

ʻAE

DN200

/

/

ʻAE

DN250

/

/

ʻAE

DN300

/

/

ʻAE

DN400

/

/

ʻAE

DN500

/

/

ʻAE

 

ʻAno ʻenehana

Pumi Hoʻolālā Compensator ≥4.0MPa
Hoʻolālā Mahana -196C~90℃ (LH2& LHe:-270~90℃)
ʻO ka Mahana Kūlohelohe -50~90 ℃
Ka Laki Leaka Māmā ≤1*10-10Pa*m3/S
Māmā ma hope o ka hōʻoia ≤0.1 Pa
ʻO ke ʻano i hoʻopaʻa ʻia ʻO ka hoʻoheheʻe ʻana i nā ʻāpana he nui.
Adsorbent a me Getter ʻAe
NDE 100% Ka Hoʻokolokolo Radiographic
Pumi Hoao 1.15 Manawa Manawa Pumi
Kauwaena LO2、LN2、LAr, LH2、LHe, LEG, LNG

Pūnaehana Paipu Paipu Paipu Paʻa Dynamic a Static Vacuum Insulated

Hiki ke hoʻokaʻawale ʻia ʻo Vacuum Insulated (VI) Piping System i Dynamic a Static VI Piping System.

lHoʻopau piha ka Static VI Piping i ka hale hana hana.

lHāʻawi ʻia ka Dynamic VI Piping i kahi mokuʻāina ʻoi aku ka paʻa ma o ka hoʻomau mau ʻana o ka ʻōnaehana pauma ma ka pūnaewele, a ʻo ke koena o ka hui a me ka mālama ʻana i ke kaʻina hana i loko o ka hale hana.

  Pūnaehana Paipu Paipu ʻia ʻo Dynamic Vacuum Insulated Pūnaehana Piping Vacuum Insulated Static
Hoʻolauna Ke nānā mau ʻia nei ka pae haʻahaʻa o ka vacuum interlayer, a e hoʻomalu ʻia ka ʻōpala ʻōpala e wehe a pani ʻia, e hōʻoia i ka paʻa a me ka maikaʻi o ka degere vacuum. Hoʻopau nā VJP i ka hana hoʻokaʻawale ma ka hale hana.
Pono ʻOi aku ka paʻa o ka paʻa ʻana o ka vacuum, hoʻopau maoli i ka mālama ʻana i ka vacuum i ka hana e hiki mai ana. ʻOi aku ka waiwai kālā a me ka hoʻonohonoho maʻalahi ma ka pūnaewele
ʻAno Hoʻohui Bayonet Vacuum me nā Paʻi

Hoʻopili

Hoʻopili

ʻAno Hoʻohui Bayonet Vacuum me nā Flanges a me nā Bolts

Hoʻopili

Hoʻopili

ʻAno Hoʻohui Welded

Hoʻopili

Hoʻopili

ʻO Dynamic Vacuum Insulated Piping System: Loaʻa i nā Pipes Insulated Vacuum, Jumper Hoses a me Vacuum Pump System (me nā ʻūhā ʻūhā, nā solenoid valves a me nā ana mīkini).

Hōʻike a me ke ʻano hoʻohālike

HL-PX-X-000-00-X

Brand

HL Cryogenic Lako

wehewehe

PD: Paipu VI Dynamic

PS: Paʻa VI Pipe

ʻAno Hoʻohui

W: ʻAno Weled

B: ʻAno Bayonet Vacuum me nā Paʻi

F: ʻAno Bayonet Vacuum me nā Flanges a me nā Bolts

Anawaena inoa o ka paipu loko

010: DN10

080: DN80

500: DN500

Pumi Hoʻolālā

08:8bar
16:16bar
25:25bar
32:32bar
40: 40bar

Mea o loko o ka paipu

A: SS304
B: SS304L
C: SS316
D: SS316L
E: ʻO kekahi

Pūnaehana Piping Vacuum Insulated Static

3.1.1 ʻAno Hoʻohui Bayonet Vacuum me nā pipili

Model

HoʻohuiʻAno

Anawaena inoa o ka paipu loko

Pumi Hoʻolālā

Mea waiwaio ka Paipu loko

Kūlana

ʻŌlelo

HLPSB01008X

ʻAno Hoʻohui ʻia ʻo Bayonet me nā pipili no ka Pūnaehana Piping Vacuum Insulated

DN10, 3/8"

8 bar

300 moʻo kila kila

ASME B31.3

X:

Mea o loko o ka paipu.

He 304 ka A,

ʻO B ka 304L,

He 316 ka C,

ʻO D ka 316L,

ʻO E kekahi.

HLPSB01508X

DN15, 1/2"

HLPSB02008X

DN20, 3/4"

HLPSB02508X

DN25, 1"

Anawaena inoa o ka paipu loko:Manaʻo ʻia ≤ DN25 a i ʻole 1 ". A i ʻole ke koho ʻana i ke ʻano hoʻohui ʻana o Vacuum Bayonet me nā Flanges a me nā Bolts (mai DN10, 3/8 "a DN80, 3"), Welded Connection Type VIP (mai DN10, 3/8" a DN500, 20" )

Anawaena inoa o ka paipu waho:Manaʻo ʻia e ka Enterprise Standard o HL Cryogenic Equipment. Hiki ke hana ʻia e like me ka makemake o ka mea kūʻai aku.

Pumi Hoʻolālā: Manaʻo ʻia ≤ 8 bar. A i ʻole e koho i ke ʻano hoʻohui ʻana o Vacuum Bayonet me nā Flanges a me nā Bolts (≤16 bar), Welded Connection Type (≤64 bar)

Mea o ka paipu waho: Me ka ʻole o ke koi kūikawā, e koho ʻia nā mea o ka paipu i loko a me waho.

3.1.2 ʻAno Hoʻohui Vacuum Bayonet me nā Flanges a me nā Bolts

Model

HoʻohuiʻAno

Anawaena inoa o ka paipu loko

Pumi Hoʻolālā

Mea waiwaio ka Paipu loko

Kūlana

ʻŌlelo

HLPSF01000X

ʻAno Hoʻohui Vacuum Bayonet me nā Flanges a me nā Bolts no Static Vacuum Insulated Piping System

DN10, 3/8"

8~16 pā

300 moʻo kila kila

ASME B31.3

00: 

Pumi Hoʻolālā.

ʻO 08 ka 8 bar,

ʻO 16 ka 16 bar.

 

X: 

Mea o loko o ka paipu.

He 304 ka A,

ʻO B ka 304L,

He 316 ka C,

ʻO D ka 316L,

ʻO E kekahi.

HLPSF01500X

DN15, 1/2"

HLPSF02000X

DN20, 3/4"

HLPSF02500X

DN25, 1"

HLPSF03200X

DN32, 1-1/4"

HLPSF04000X

DN40, 1-1/2"

HLPSF05000X

DN50, 2"

HLPSF06500X

DN65, 2-1/2"

HLPSF08000X

DN80, 3"

Anawaena inoa o ka paipu loko:Manaʻo ʻia ≤ DN80 a i ʻole 3 ". A i ʻole e koho i ka Welded Connection Type (mai DN10, 3/8" a DN500, 20"), Vacuum Bayonet Connection Type me nā Clamps (mai DN10, 3/8" a DN25, 1").

Anawaena inoa o ka paipu waho:Manaʻo ʻia e ka Enterprise Standard o HL Cryogenic Equipment. Hiki ke hana ʻia e like me ka makemake o ka mea kūʻai aku.

Pumi Hoʻolālā: Manaʻo ʻia ≤ 16 bar. A i ʻole e koho i ke ʻano hoʻohui Welded (≤64 bar).

Mea o ka paipu waho: Me ka ʻole o ke koi kūikawā, e koho ʻia nā mea o ka paipu i loko a me waho.

3.1.3 ʻAno Hoʻohui Welded

Model

HoʻohuiʻAno

Anawaena inoa o ka paipu loko

Pumi Hoʻolālā

Mea waiwaio ka Paipu loko

Kūlana

ʻŌlelo

HLPSW01000X

ʻAno Hoʻohui Welded no Static Vacuum Insulated Piping System

DN10, 3/8"

8~64 pā

300 moʻo kila kila

ASME B31.3

00: 

Pumi Hoʻolālā

ʻO 08 ka 8 bar,

ʻO 16 ka 16 bar,

a me 25, 32, 40, 64.

 

X: 

Mea o loko o ka paipu.

He 304 ka A,

ʻO B ka 304L,

He 316 ka C,

ʻO D ka 316L,

ʻO E kekahi.

HLPSW01500X

DN15, 1/2"

HLPSW02000X

DN20, 3/4"

HLPSW02500X

DN25, 1"

HLPSW03200X

DN32, 1-1/4"

HLPSW04000X

DN40, 1-1/2"

HLPSW05000X

DN50, 2"

HLPSW06500X

DN65, 2-1/2"

HLPSW08000X

DN80, 3"

HLPSW10000X

DN100, 4"

HLPSW12500X

DN125, 5"

HLPSW15000X

DN150, 6"

HLPSW20000X

DN200, 8"

HLPSW25000X

DN250, 10"

HLPSW30000X

DN300, 12"

HLPSW35000X

DN350, 14"

HLPSW40000X

DN400, 16"

HLPSW45000X

DN450, 18"

HLPSW50000X

DN500, 20"

Anawaena inoa o ka paipu waho:Manaʻo ʻia e ka Enterprise Standard o HL Cryogenic Equipment. Hiki ke hana ʻia e like me ka makemake o ka mea kūʻai aku.

Mea o ka paipu waho: Me ka ʻole o ke koi kūikawā, e koho ʻia nā mea o ka paipu i loko a me waho.

Pūnaehana Paipu Paipu ʻia ʻo Dynamic Vacuum Insulated

3.2.1 ʻAno Hoʻohui Bayonet Vacuum me nā pipili

Model

HoʻohuiʻAno

Anawaena inoa o ka paipu loko

Pumi Hoʻolālā

Mea waiwaio ka Paipu loko

Kūlana

ʻŌlelo

HLPDB01008X

ʻAno Hoʻohui ʻia ʻo Bayonet me nā pipili no ka Pūnaehana Piping Vacuum Insulated

DN10, 3/8"

8 bar

300 moʻo kila kila

ASME B31.3

X:Mea o loko o ka paipu.

He 304 ka A,

ʻO B ka 304L,

He 316 ka C,

ʻO D ka 316L,

ʻO E kekahi.

HLPDB01508X

DN15, 1/2"

HLPDB02008X

DN20, 3/4"

HLPDB02508X

DN25, 1"

Anawaena inoa o ka paipu loko:Manaʻo ʻia ≤ DN25 a i ʻole 1 ". A i ʻole ke koho ʻana i ke ʻano hoʻohui ʻana o Vacuum Bayonet me nā Flanges a me nā Bolts (mai DN10, 3/8 "a DN80, 3"), Welded Connection Type VIP (mai DN10, 3/8" a DN500, 20" )

Anawaena inoa o ka paipu waho:Manaʻo ʻia e ka Enterprise Standard o HL Cryogenic Equipment. Hiki ke hana ʻia e like me ka makemake o ka mea kūʻai aku.

Pumi Hoʻolālā: Manaʻo ʻia ≤ 8 bar. A i ʻole e koho i ke ʻano hoʻohui ʻana o Vacuum Bayonet me nā Flanges a me nā Bolts (≤16 bar), Welded Connection Type (≤64 bar)

Mea o ka paipu waho: Me ka ʻole o ke koi kūikawā, e koho ʻia nā mea o ka paipu i loko a me waho.

Kūlana mana:Pono ka pūnaewele e hāʻawi i ka mana i nā ʻumeke a hoʻomaopopo iā HL Cryogenic Equipment i ka ʻike uila kūloko (Voltage and Hertz)

3.2.2 ʻAno Hoʻohui Vacuum Bayonet me nā Flanges a me nā Bolts

Model

HoʻohuiʻAno

Anawaena inoa o ka paipu loko

Pumi Hoʻolālā

Mea waiwaio ka Paipu loko

Kūlana

ʻŌlelo

HLPDF01000X

ʻAno Hoʻohui Vacuum Bayonet me nā Flanges a me nā Bolts no Static Vacuum Insulated Piping System

DN10, 3/8"

8~16 pā

300 moʻo kila kila

ASME B31.3

00: Pumi Hoʻolālā.

ʻO 08 ka 8 bar,

ʻO 16 ka 16 bar.

 

X: 

Mea o loko o ka paipu.

He 304 ka A,

ʻO B ka 304L,

He 316 ka C,

ʻO D ka 316L,

ʻO E kekahi.

HLPDF01500X

DN15, 1/2"

HLPDF02000X

DN20, 3/4"

HLPDF02500X

DN25, 1"

HLPDF03200X

DN32, 1-1/4"

HLPDF04000X

DN40, 1-1/2"

HLPDF05000X

DN50, 2"

HLPDF06500X

DN65, 2-1/2"

HLPDF08000X

DN80, 3"

 

Anawaena inoa o ka paipu loko:Manaʻo ʻia ≤ DN80 a i ʻole 3 ". A i ʻole e koho i ka Welded Connection Type (mai DN10, 3/8" a DN500, 20"), Vacuum Bayonet Connection Type me nā Clamps (mai DN10, 3/8" a DN25, 1").

Anawaena inoa o ka paipu waho:Manaʻo ʻia e ka Enterprise Standard o HL Cryogenic Equipment. Hiki ke hana ʻia e like me ka makemake o ka mea kūʻai aku.

Pumi Hoʻolālā: Manaʻo ʻia ≤ 16 bar. A i ʻole e koho i ke ʻano hoʻohui Welded (≤64 bar).

Mea o ka paipu waho: Me ka ʻole o ke koi kūikawā, e koho ʻia nā mea o ka paipu i loko a me waho.

Kūlana mana:Pono ka pūnaewele e hāʻawi i ka mana i nā ʻumeke a hoʻomaopopo iā HL Cryogenic Equipment i ka ʻike uila kūloko (Voltage and Hertz)

3.2.3 ʻAno Hoʻohui Welded

Model

HoʻohuiʻAno

Anawaena inoa o ka paipu loko

Pumi Hoʻolālā

Mea waiwaio ka Paipu loko

Kūlana

ʻŌlelo

HLPDW01000X

ʻAno Hoʻohui Welded no Dynamic Vacuum Insulated Piping System

DN10, 3/8"

8~64 pā

Ke kila kila 304, 304L, 316, 316L

ASME B31.3

00:

Pumi Hoʻolālā

ʻO 08 ka 8 bar,

ʻO 16 ka 16 bar,

a me 25, 32, 40, 64.

.

 

X: 

Mea o loko o ka paipu.

He 304 ka A,

ʻO B ka 304L,

He 316 ka C,

ʻO D ka 316L,

ʻO E kekahi.

HLPDW01500X

DN15, 1/2"

HLPDW02000X

DN20, 3/4"

HLPDW02500X

DN25, 1"

HLPDW03200X

DN32, 1-1/4"

HLPDW04000X

DN40, 1-1/2"

HLPDW05000X

DN50, 2"

HLPDW06500X

DN65, 2-1/2"

HLPDW08000X

DN80, 3"

HLPDW10000X

DN100, 4"

HLPDW12500X

DN125, 5"

HLPDW15000X

DN150, 6"

HLPDW20000X

DN200, 8"

HLPDW25000X

DN250, 10"

HLPDW30000X

DN300, 12"

HLPDW35000X

DN350, 14"

HLPDW40000X

DN400, 16"

HLPDW45000X

DN450, 18"

HLPDW50000X

DN500, 20"

Anawaena inoa o ka paipu waho:Manaʻo ʻia e ka Enterprise Standard o HL Cryogenic Equipment. Hiki ke hana ʻia e like me ka makemake o ka mea kūʻai aku.

Mea o ka paipu waho: Me ka ʻole o ke koi kūikawā, e koho ʻia nā mea o ka paipu i loko a me waho.

Kūlana mana:Pono ka pūnaewele e hāʻawi i ka mana i nā ʻumeke a hoʻomaopopo iā HL Cryogenic Equipment i ka ʻike uila kūloko (Voltage and Hertz)


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