Views: 206 Sau: Tus xaib Editor Tshaj Tawm Lub Sijhawm: 2024-01-15 Keeb kwm: Lub chaw
Zoo siab txais tos rau peb cov ntaub ntawv ntsig txog Jic thiab Jis hydraulic fittings! Yog tias koj nkag mus rau hauv hydraulics, seb koj puas yog PRO lossis nyuam qhuav pib tawm, koj nyob hauv qhov chaw yog. Peb yuav mus rhuav txhua yam koj yuav tsum paub txog ob hom haum no. Los ntawm yuav ua li cas lawv tau siv rau cov txiaj ntsig lawv tau muab thiab qhov sib txawv ntawm lawv - peb tau txais nws tag nrho cov nyiaj. Koj puas paub, piv txwv li, uas JIC thiab Jic fittings yuav zoo sib xws thaum xub thawj siab, tab sis lawv tsis tuaj yeem hloov mus rau ib leeg? Cia peb dhia hauv thiab nrhiav paub ntau ntxiv txog cov kev sib txawv hauv cov qauv, kev siv lub peev xwm, thiab yuav ua li cas lawv siv.
Tus qauv kev lag luam Japanese (JIS) tau tsim dua tshiab-ntiaj teb Tsov Rog Zaum II rau kev tsim khoom lag luam thiab cov txheej txheem hauv Nyij Pooj. Nws yog kev txav mus rau roj lawv txoj kev loj hlob hauv kev lag luam thoob ntiaj teb. JIS cov qauv rau cov fittings hydraulic tau tsim kom ntseeg tau kev ua tau zoo xws li Japanese thiab Korean cov khoom siv hnyav xws li cov khoom siv handagese thiab kamelco, Kobelco, Hitachi, thiab Kubota.
JIS hydraulic fittings paub rau lawv cov kev pabcuam siab zoo thiab cov qauv kev lag luam encalisering. Ib qho tseem ceeb tseem ceeb yog lawv lub kaum-degree lub kaum, uas txawv ntawm 37-degree kaum tau siv hauv American Jic Fittings. Qhov no me me tab sis qhov tseem ceeb tshaj plaws hauv txoj kev sib txawv ntawm JIS thiab Jic fittings tsis tau hloov pauv tau yooj yim, hais txog qhov tseem ceeb ntawm kev nkag siab thiab cov qauv hauv cheeb tsam.
Qhov xov xwm tshwj xeeb no siv rau JIS fittings. Nws yog ib txwm ua haujlwm hauv cov ntawv thov uas cov kua hluav taws xob thiab roj xa khoom yog qhov tseem ceeb, ua kom muaj kev sib txuas nrog.
Nws muaj cov xov me me thiab cov lej 60-degree uas muab cov foob txhim khu kev qha rau cov chaw siab kom siab. Hom no yog favored nyob rau hauv hydraulic systems nyob rau hauv lub teb chaws asian.
Cov ntsiab lus sib txuas no uas ua tau txuas rau Jis fittings. Nws tau siv dav rau tubing thiab hoses txuas tshuab nyob rau hauv cov cuab yeej hnyav.
Tshwj xeeb yog tsim rau cov cuab yeej siv tau ua, cov fittings siv 30-degree lub rooj zaum rau kev sib khi, kom ntseeg tau tias muaj feem xyuam.
Cov no yog flange-hom fittings muab kev sib txuas muaj zog hauv cov kev co-co tshuab. Lawv tseem ceeb heev rau cov ntawv thov siab siab thiab yog ib qho staple nyob rau hauv cov khoom ntawm cov khoom lag luam ntawm ntau cov neeg faib khoom lag luam thiab cov lag luam lag luam.
JIS hydraulic fittings yog nthuav dav nyob rau hauv kev lag luam uas Japanese thiab Korean cov cuab yeej siv hnyav yog siv. Qhov no suav nrog kev tsim kho, kev sib khuav, thiab kev ua liaj ua teb. North America kuj muaj cov khoom lag luam tseem ceeb rau JIS fittings vim yog cov khoom siv Japanese xws li Caterpillar thiab John deere.
Hauv cov xwm txheej nyob qhov twg cov cuab yeej tsim tawm JIS cov qauv, siv cov fittings no tsis yog kev saib xyuas kev ncaj ncees thiab kev nyab xeeb. Tsis tas li ntawd, hauv kev sib sau ua ke los ntawm Japanese txuas, Jis fittings sib txuas, JIS fittings kev sib txuas thiab txo cov nqi ntau lawm thaum loj hlob ua lag luam. Lawv yog qhov tseem ceeb hauv kev tswj cov kev ua haujlwm tau zoo thiab kev nyab xeeb ntawm cov tshuab hydraulic.
Jis fittings tau ua kom haum rau cov kev xav tau tshwj xeeb thiab cov kev ntsuas siab. Piv txwv li, thaum cuam tshuam nrog Nyij Pooj Tshuab HYDRAULIC, JIS hydraulic fittings yog qhov mus xaiv Islis American hom kev sib txuas lossis cov qauv tsim tau thiab sib khi ua ke.
Jic fittings, lossis sib koom ua ke pab pawg tswj hwm kev lag luam, lw lawv cov qauv rov qab mus rau SAE J514 thiab Mil-DTL-18866. Cov qauv no tau tsim los xyuas kom meej thiab kev ntseeg tau hauv cov tshuab hydraulic. SA J514 tus qauv yog pom dav hauv North American lag luam thiab tau txais kev thoob ntiaj teb rau cov fittings hydraulic. Nws qhia txog qhov yuav tsum tau ua rau 37-degree flare rooj zaum nto. MIL-DTL-18866, ntawm qhov tod tes, muab cov kev qhia tshwj xeeb rau kev ua tau zoo ntawm cov fittings haum rau kev siv hauv cov ntawv thov siab.
Jic fittings paub txog lawv cov thawj-lub kaum sab xis ntawm cov qauv ntawm cov qauv Askiv lossis lub rooj zaum JONY) uas feem ntau muaj lub rooj zaum 30-theem. Qhov no zoo li lub kaum sab xis tso cai rau cov hlau-rau-hlau foob, uas yog qhov tseem ceeb rau cov ntawv thov kev siab siab. Qhov tseeb ntawm lub kaum ntse ntse uas thaum cov haum yog nruj, nws tsim cov foob uas tuaj yeem tiv thaiv lub siab yam tsis muaj kev txwv.
Hauv North America, Jic Fittings tuav ib qho kev ua lag luam tseem ceeb sib qhia vim lawv qhov kev sib raug zoo nrog ntau hom xov ntawm Asmeskas xov. Lawv feem ntau pom muaj nyob rau hauv cov khoom siv hydraulic ntawm cov cuab yeej hnyav zoo li kab ntsig thiab John deere. Jic fittings tau dhau los ua tus qauv hauv ntau tus qauv thiab cov qauv hauv cheeb tsam, ua rau lawv xaiv mus rau kev xaiv cov khoom siv thiab cov khoom xa khoom.
Tus tsim qauv ntawm Jic fittings muaj ntau cov txiaj ntsig rau cov kev muaj txiaj ntsig zoo. Lawv lub zog tsim kho, feem ntau ua los ntawm cov hlau tsis muaj hlau, tso cai rau kev ua tau zoo nyob hauv kev ntxhov siab. Tus hlau-rau-hlau lub foob me me minimizes kev pheej hmoo ntawm cov kua dej, uas yog qhov tseem ceeb rau kev tswj cov kev txuag tau thiab muaj kev nyab xeeb hauv cov tshuab hydraulic. Tsis tas li ntawd, Jic fittings tau hloov tau yooj yim, simpawm lub tubing thiab hoses txuas system thiab txo cov nqi sib txuas rau cov tuam ntxhab. Lub peev xwm tiv thaiv lub siab tsis muaj kev sib txawv ntawm kev nyab xeeb ntawm kev nyab xeeb lossis kev ua tau zoo ntawm lawv txoj kev loj hlob hauv kev lag luam thoob ntiaj teb.
Jic fittings, nrog lawv lub rooj zaum 37-degree flars zoo li SAE J514 thiab Mil-DTL-18866, yog pivotal hauv siab siab hydraulic. Lawv cov yam ntxwv sib txawv thiab cov txiaj ntsig tau ua kom lawv yog tus qauv nyob rau hauv North American lag luam thiab dhau, txhawb kev lag luam uas xav tau cov ntaub ntawv sau tau zoo thiab muaj txiaj ntsig zoo thiab ua tau zoo thiab txuag tau cov kua dej kom zoo thiab ua tau zoo thiab ua tau zoo siv thiab ua tau zoo siv cov khoom siv
Thaum peb delve rau hauv cov qauv sib txawv, peb tab tom saib ntawm Japanese cov qauv kev lag luam (JIS) piv rau cov qauv kev lag luam hauv kev lag luam (JIC). Ob txoj lus qhia rau cov fittings hydraulic, tab sis lawv kav los ntawm ntau qhov chaw keeb kwm. JIS hydraulic ua raws li Japanese kev lag luam tshwj xeeb, thaum Jic fittings ua raws North American cov qauv, suav nrog SA J514 thiab Mil-DTL-18866.
JIS fittings feem ntau siv British tus qauv (BSPP) xov los yog sib tw xov, thaum Jic fittings feem ntau ua lag luam tsis tau xov. Qhov no txhais tau tias JIS thiab JIC muaj DIS Xov qauv thiab pitches , uas cuam tshuam rau lawv li cas txuas nrog tubing.
Cov kev xav tau sib txawv txawv ntawm ob. Jis fittings tej zaum yuav muaj 30-degree flare raj txuas lossis lwm txoj kev sib khi, whereas Jic fittings ua qauv nyob rau ntawm lub rooj zaum 37-degree flare nto. Qhov no pom lub kaum sab xis yog qhov tseem ceeb heev rau kev ua kom muaj lub foob kaw.
Cov duab ntawm JIS couplings tuaj yeem sib txawv, nrog qee qhov tsim rau Japanese sib txuas, thaum Jic adapter sib txuas kom haum rau North American thiab thoob ntiaj teb kev lag luam. Cov ces kaum haum yog tshwj xeeb rau txhua tus qauv thiab yuav tsum phim cov kev coj ua rau kev teeb tsa kom tsim nyog.
JIS cov fittings hydraulic yog tsim los rau cov kev muaj zog ib puag ncig, ib yam li JIC. Txawm li cas los xij, cov kev ntsuas siab thiab Tev muaj peev xwm txawv vim cov qauv lawv ua raws. Txhua hom kev sib haum xeeb yog engineered kom tau raws li qhov xav tau ntawm cov cuab yeej hnyav thiab cov tshuab hydraulic.
Ob lub JIs thiab Jic fittings feem ntau ua los ntawm cov ntaub ntawv ruaj khov zoo li cov hlau stainless. Cov ntaub ntawv no tau xaiv rau lawv lub zog thiab cov khoom siv hluav taws xob cua sov, kom ua tau zoo tshaj plaws.
Cov qauv zoo thiab cov qauv ntawv pov thawj yog qhov tseem ceeb rau ob hom fittings. Cov khoom siv cov khoom siv feem ntau yuav tsum muaj ntawv pov thawj los lav tau kev ua tau zoo thiab kev nyab xeeb ntawm cov tshuab hydraulic. JIS thiab Jic fittings yuav tsum tau ua raws li lawv cov qauv kev nyab xeeb thiab cheeb tsam hauv cheeb tsam tau txiav txim siab rau kev siv.
Tsis muaj kev sib txuas lus tsis sib xws yog qhov kev txhawj xeeb tseem ceeb. Kev siv cov haum tsis ncaj ncees lawm tuaj yeem ua rau muaj cov dej xau, khoom puas tsuaj, thiab phom sij kev nyab xeeb. Nws yog qhov tseem ceeb kom phim hom haum rau tus qauv coj kom zam dhau cov teeb meem no.
Cov lus qhia rau kev xaiv tsim nyog los xyuas kom paub kev xaiv zoo, ib txwm tshuaj xyuas hom xov, yuav tsum tau ua. Thaum tsis paub txog, sab laj nrog cov neeg faib khoom lag luam wholesale lossis cov lag luam lag luam uas tuaj yeem muab cov kev pabcuam zoo thiab cov kev qhia.
Jis fittings yog nthuav dav nyob rau hauv cov tebchaws Esxias, tshwj xeeb nrog Japanese thiab Korean cov cuab yeej siv hnyav zoo li KOMATHSU, KOBELCO, HITACHI, thiab KUBOTA. Conversely, Jic Fittings Dominate rau North American lag luam, nrog cov tuam ntxhab xws li cov kab ntsig xws li John Deere vam khom lawv.
Cov qauv kev lag luam tsim muaj ntau yam muaj cov fittings. JIS thiab Jic fittings tau npaj txhij los ntawm cov chaw muag khoom uas cass rau lawv cov kev lag luam thiab cov qauv.
Kev thoob ntiaj teb tau ua rau nws yooj yim rau ob qho tib si Jis thiab Jic fittings. Txawm li cas los xij, nws yog qhov tseem ceeb kom nkag siab cov qauv sib txawv, kev siv sib txawv, thiab sib txawv ua kom muaj kev xaiv paub. Fittings tsis yog tsuas yog hais txog kev sib txuas tubing thiab hoses; Lawv ua lub luag haujlwm tseem ceeb hauv kev ua haujlwm thiab kev nyab xeeb ntawm cov tshuab hydraulic.
Los ntawm kev tsom xam cov ntsiab lus no, peb tuaj yeem siv tau tias txoj cai fittings yog siv rau cov ntawv thov txoj cai, kev tswj hwm kev nyab xeeb ntawm kev nyab xeeb thiab kev ua haujlwm hauv cov tshuab hydraulic.
Thaum ua haujlwm nrog cov tshuab hydraulic, nws yog qhov tseem ceeb kom paub qhov txawv ntawm JIS (Japanese kev lag luam qauv) thiab JIC (sib pab neeg hauv kev lag luam) fittings. Ob qho tib si muaj tus yam ntxwv tshwj xeeb uas cer cer rau cov kev xav tau sib txawv thiab cov qauv kev lag luam.
JIS fittings, feem ntau siv nyob rau hauv Japanese hydraulic daim ntawv thov, muaj kev sib tw 30-degree lub kaum. Lawv muaj cov khoom siv los ntawm cov tuam ntxhab xws li cov, Kobelco, Hitachi, thiab Kubota. Nyob rau hauv kev sib piv, Jic fittings, prattralent hauv North American lag luam, siv 37-degree flare rooj zaum nto. Lawv tau sib ntsib cov qauv tshwj xeeb ntawm cov qauv xws li SAE J514 thiab Mil-DTL-18866.
Txhawm rau txheeb xyuas lawv, nrhiav qhov tseeb ntawm lub kaum sab xis ntawm lub raj txuas sib txuas lus fittings. JIS haum yuav muaj lub ntsej muag me me piv rau JIC daim tawv. Tsis tas li ntawd, kos cov xov. Jis fittings feem ntau ua raws li metric lossis Askiv tus qauv, thaum Jic fittings feem ntau muaj xov hom.
Xaiv txoj cai fittings tsis yog tsuas yog hais txog kev ua haujlwm thiab kev nyab xeeb; Nws kuj tseem hais txog kev ua kom muaj kev txhim khu kev qha ua tau zoo hauv cov kev ntsuas siab. Ntawm no yog yuav xaiv li cas:
1. Phim cov qauv : Xyuas kom meej hom haum sib haum nrog cov cuab yeej manufacturers 'specifications.
2. Xav txog daim ntawv thov : Cov ntawv thov kev siab siab yuav xav tau cov hlau tsis muaj stainless hlau hydraulic fittings rau durability.
3. Txheeb xyuas qhov chaw sib khi : ib qho tsis sib xws hauv kev sib khi ua ke tuaj yeem ua rau xau. Paub meej tias lub ntsej muag sib tsoo thiab rooj zaum.
4. Kuaj xyuas qhov : Tsis sib txuas lus tsis sib thooj yog qhov teeb meem tshwm sim. Txheeb xyuas tias cov fittings tau tsim los ua haujlwm ua ke.
Yuam kev nyob rau hauv kev xaiv xaiv tuaj yeem ua rau downtime thiab tus nqi kho. Ntawm no yog qee qhov samfwm rau cov khoom ntshiab ntawm:
l saib tsis quav ntsej cov qauv : saib xyuas qhov sib txawv ntawm JIC VS Jic phim cov qauv tuaj yeem ua rau muaj kev sib txuas tsis sib xws.
l Cov sib txuas sib txuas : siv JIS txuas nrog JIC cov lus qhia kev sib haum yog ib daim ntawv qhia ua tsis tiav. Lo rau ib tus qauv.
Kuv tsis pom zoo kev ntsuas : tsis yog txhua tus fittings haum rau txhua qib siab. Txheeb xyuas cov kev ntsuas kom tsis txhob ua txhaum cai.
Los ntawm kev tsom mus rau cov kev sib txuas no, koj tuaj yeem ua kom ntseeg tau tias lub tubing thiab hoses txuas system hauv koj cov cuab yeej siv hydraulic yog cov khoom siv Japanese thiab korean hnyav lossis cov tshuab ua lag luam sab qaum teb. Nco ntsoov, nyob rau hauv lub realm ntawm hydraulic fittings, Precision yog qhov tseem ceeb los tswj cov nqi kev pabcuam zoo thiab txo cov toj roob hauv pes ntau yam hauv cov toj roob hauv pes kev sib tw hauv kev sib tw.
Kev saib xyuas ib txwm yog qhov tseem ceeb rau kev ncua sij hawm thiab ua haujlwm ntawm koj cov tshuab hydraulic, tshwj xeeb thaum nws los txog JIS thiab Jic fittings. Ntawm no yog yam koj tuaj yeem ua kom cov khoom khiav kom haum:
1. Soj ntsuam tsis tu ncua : Kos rau cov cim ntawm hnav, xws li tawg lossis corrosion ntawm stainless hlau fittings.
2. Kev nyiam huv yog qhov tseem ceeb : Xyuas kom cov fittings thiab thaj chaw ib puag ncig yog pub dawb los ntawm cov kab mob sib kis los tswj cov kev txwv.
3. Zawm kom raug : Tshaj-Zawm tuaj yeem ua rau puas. Ua raws li cov ntaub ntawv tshwj xeeb muab los ntawm cov cuab yeej tsim khoom lag luam.
4. Siv cov xov tsim nyog : Siv cov ntshav siab tsim nyog ntawm xov ntawm British kev sib txuas thiab lwm tus kom tiv thaiv kev ua vaj.
5. Hloov o-rings : hnav o-rings tuaj yeem ua rau xau. Hloov lawv ua ib feem ntawm kev saib xyuas raj rau raj txuas txuas fittings.
Ntsib teeb meem nrog Jis hydraulic fittings lossis jic fittings? Ntawm no yog yuav ua li cas los daws qee qhov teeb meem ntau:
L Txau : Saib rau qhov chaw. Tej zaum nws yuav yog qhov yooj yim kho zoo li zawm cov kev sib txuas lossis hloov cov roj o-ntiv nplhaib.
Kuv cov tee dej siab : qhov no tuaj yeem qhia kev thaiv lossis tsis muaj qhov sib haum xeeb. Txheeb xyuas kab thaiv lossis kev puas tsuaj rau tubing.
Kuv tsis nyob sib txawv : sib xyaw JIS thiab JIC thiab JIC tuaj yeem ua rau haum tsis zoo. Nco ntsoov tias koj siv cov qauv kev lag luam raug thiab cov qauv hauv cheeb tsam.
Paub thaum twg los hloov lossis txhim kho koj cov fittings hydraulic tuaj yeem cawm koj los ntawm kev npaj txhij txog lub sijhawm:
L pom hnav : yog tias muaj kev puas tsuaj rau JIS couplings lossis Jic fittings , nws yog lub sijhawm hloov.
u siab mismanaggragement : nyob rau hauv rooj plaub koj lub cev tsis tuaj yeem tswj tau qhov zoo, xav txog cov fittings uas tau raws li cov lus qhia kev lag luam Japanese.
L Kev Ua Lag Luam Evolution : Nrog kev hloov pauv ntawm kev ua lag luam Qhia tawm thiab thev naus laus zis zoo li JIS B8363 lossis SAE J514 tuaj yeem txhim kho kev ua haujlwm thiab kev nyab xeeb.
Jis fittings thiab Jic fittings muaj cov qauv sib txawv , sib txawv , thiab kev siv tau sib txawv . Nws yog qhov tseem ceeb kom nkag siab txog cov no kom ua kom tau kev ua tau zoo hauv koj cov tshuab hydraulic.
JIS (Japanese kev lag luam qauv) thiab JIC (Pab pawg ua lag luam yog ob qho tseem ceeb hauv lub ntiaj teb no fittings, tab sis lawv muaj cov yam ntxwv sib txawv. Thawj cov qauv sib txawv nyob hauv lawv cov kev xav tau thiab tawm cov ces kaum. Jis fittings feem ntau muaj 30-degree flare kaum, thaum Jic fittings siv 37-degree flare rooj zaum. Ib qho ntxiv, JIS ntau zaus ua raws li Metric qhov ntev, whereas jic fittings feem ntau ua raws li xov ua raws li cov xov hauv Asmeskas.
Vim yog cov tsis sib txuas lus ntawm lawv cov qauv tsim, jis thiab jic fittings tsis tuaj yeem siv sib hloov pauv. Qhov tseeb lub kaum sab xis sib txawv thiab xov cov lus txhais tau tias sim siv ib qho nyob rau hauv qhov chaw ntawm lwm tus tuaj yeem ua rau cov kab mob hydraulic. Nws yog qhov tseem ceeb rau cov cuab yeej tsim khoom thiab cov neeg ua haujlwm saib xyuas kom siv cov raj raj xa hluav taws xob kom yog ua kom tau kev ua tau zoo.
Cov efficiency thiab kev nyab xeeb ntawm cov tshuab hydraulic feem ntau pob khawm ntawm kev xaiv tsim nyog thiab teeb tsa fittings. JIS thiab JIC cov qauv muab cov lus qhia uas paub meej fittings tuaj yeem tiv thaiv ib puag ncig ntau. Los ntawm ua raws cov qauv no, cov qauv zoo rau kev sib tw thiab txo qis kev pheej hmoo ntawm cov kev sib tw, uas yog qhov tseem ceeb ntawm cov kev pabcuam zoo thiab txo cov nqi tsim khoom.
JIS fittings feem ntau pom nyob rau hauv Japanese thiab Korean cov khoom siv hnyav, xws li cov hom phiaj zoo li cov txiv maj, Kobelco, Hitachi, thiab Kubota. Lawv kuj tseem pheej nyob hauv cov tebchaws Esxias uas Japanese muaj kev lag luam tshwj xeeb yog qauv. Txawm li cas los xij, lawv txoj kev sib koom ua lag luam tau loj hlob hauv North American lag luam raws li tus kab ntsig xws li John Deals ua ke ntau dua Jis hydraulic fittings rau lawv cov tshuab.
Thaum cuam tshuam nrog Jic fittings, nws yog qhov tseem ceeb uas yuav tsum xav txog cov ntawv thov kev siab siab lawv feem ntau muaj kev koom tes thiab kev saib xyuas tsis tu ncua kom tsis txhob muaj kev phom sij. Stainless hlau hydraulic fittings yog nyiam rau lawv lub durability thiab tiv taus rau corrosion. Ntxiv mus, ua kom muaj qhov tseeb tubing thiab haum ntais yuav tiv thaiv cov teeb meem uas tuaj yeem ua rau muaj kev ua tau zoo thiab kev nyab xeeb ntawm cov kab ke hydraulic.
Nyob rau hauv no cov fittings rau hauv lub ntiaj teb ntawm hydraulic fittings, peb tau unravyed cov txheej txheem ntawm JIS (Japanese kev lag luam qauv) thiab JIC (kev lag luam hauv kev lag luam) fittings) fittings. Pib nrog lub hauv paus pib thiab cov cim tseem ceeb ntawm Jis fittings, peb tshawb txog ntau hom zoo li Jis B 0202 thiab nkag siab txog lawv cov ntawv thov tshwj xeeb thiab cov txiaj ntsig hauv ntau qhov xwm txheej.
Hloov mus rau Jic fittings, peb delved rau hauv lawv cov cwj pwm yav dhau los, thiab lawv lub luag haujlwm tseem ceeb hauv North American canes, tshwj xeeb tshaj yog hauv cov ntawv thov siab. Qhov kev sib piv ntawm JIS thiab Jic tau tshwj xeeb tshaj yog, qhia cov kev sib txawv, kev ua tau zoo, thiab lawv txoj kev sib tw sib txuas lus.
Nkag siab txog kev siv raug thiab xaiv cov fittingss yog qhov tseem ceeb heev. Peb tau muab cov lus qhia kom paub qhov tseeb fittings, nrog rau cov kev coj ua zoo tshaj plaws thiab cov kev ua tsis tau zoo rau kev zam. Kev Txij Nkawm thiab Kev daws teeb meem kuj tau them, kom ua tau zoo thiab ua haujlwm hauv cov tshuab hydraulic.
Hauv kev xaus, txawm koj xav paub txog kev lag luam lossis cov lus qhia no muaj kev pom rau kev nyab xeeb rau kev nyab xeeb rau kev nyab xeeb rau kev nyab xeeb rau kev nyab xeeb rau kev nyab xeeb rau kev nyab xeeb rau kev nyab xeeb rau kev nyab xeeb rau kev nyab xeeb rau kev nyab xeeb rau kev nyab xeeb rau kev nyab xeeb thiab ua haujlwm.
