daim ntawv thov

Hard PVC yeeb nkab thiab cov yeeb nkab fittings yog ib qho kev loj hlob sai hauv ntau cov khoom siv PVC hauv peb lub teb chaws, thiab tseem yog cov khoom siv ntau tshaj plaws ntawm cov yeeb nkab yas.Tom qab kev tshaj tawm thiab kev txhawb nqa ntawm PVC yeeb nkab hauv peb lub teb chaws nyob rau xyoo tas los no, tshwj xeeb tshaj yog kev txhawb nqa ntawm cov kev cai hauv tebchaws, kev tsim thiab kev siv cov yeeb nkab PVC tau tsim kev loj hlob.Kev tsim cov yeeb nkab PVC tau suav txog ntau dua 50% ntawm tag nrho cov khoom siv ntawm cov yeeb nkab yas.Nws yog dav siv hauv ntau lub lag luam, xws li kev lag luam, kev tsim kho, kev ua liaj ua teb thiab lwm yam.

Txoj kev loj hlob ntawm PVC yeeb nkab

1. Qhov zoo ntawm PVC yeeb nkab

Hauv kev tsim cov universal resin, PVC resin muaj qhov tsawg tshaj plaws ethylene noj thiab tus nqi qis tshaj plaws.Kev siv ethylene ib tuj ntawm PVC hauv kev tsim khoom hauv tsev yog 0.5314 tons, thiab qhov nruab nrab ethylene noj ib tuj ntawm polyethylene yog 1.042 tons.Kev siv ethylene ib tuj ntawm PVC cob hauv Suav teb yog li 50% tsawg dua li ntawm polyethylene.Cov khoom siv chlorine roj siv hauv kev tsim cov PVC yog ib txoj hauv kev tseem ceeb rau kev sib npaug ntawm cov dej qab zib caustic los tsim cov roj chlorine.Caustic soda yog ib qho tseem ceeb raw khoom tseem ceeb rau kev lag luam hauv lub tebchaws.Tsis tas li ntawd, los ntawm qhov pom ntawm cov khoom siv yas, PVC muaj kev sib raug zoo nrog ntau lub koom haum, thiab ntau tus nqi pheej yig tuaj yeem muab ntxiv rau hauv cov kav dej, kom cov nqi tsim khoom tau txo qis heev.

Piv nrog cov kav hlau, PVC yeeb nkab ntau lawm ib cubic meter ntawm PVC thiab ntau lawm ib cubic meter ntawm steel thiab txhuas xam, steel zog noj yog 316KJ / m3, aluminium zog noj yog 619KJ / m3, PVC zog noj yog 70KJ / m3, uas yog , steel zog noj yog 4.5 npaug ntawm PVC, aluminium zog noj yog 8.8 npaug ntawm PVC.Thiab cov khoom ntawm PVC yeeb nkab ua lub zog noj tsuas yog ib feem peb ntawm tib caliber hlau yeeb nkab.Nyob rau tib lub sijhawm, vim yog cov phab ntsa du ntawm cov yeeb nkab PVC, tsis muaj cov qog nqaij hlav, kev xa dej siab, kev siv dej tuaj yeem txuag tau li 20% ntawm hluav taws xob.

PVC yeeb nkab muaj cov cuab yeej zoo, thiab muaj kev tiv thaiv corrosion zoo heev, lub teeb yuag hauv cov txheej txheem siv, yooj yim installation, tsis xav tau kev saib xyuas, thiab siv cov hlau rau pej xeem engineering cov kav dej phwj hauv cov txheej txheem siv vim yooj yim corrosion, yuav tsum feem ntau coated nrog cov xim, cov nqi kho mob siab.Kev tsim kho thiab pej xeem ua haujlwm nrog cov kav hlau hlau txog 20 xyoo yuav tsum tau hloov, thiab lub luag haujlwm ntawm kev ua haujlwm zoo ntawm cov kav dej PVC, kev pabcuam lub neej ntev li 50 xyoo.Yog li ntawd, PVC yeeb nkab yog cov khoom yas zoo nrog cov nqi tsim khoom tsawg, siab zog thiab corrosion kuj.

Feem ntau hais lus, hais txog cov dej phwj tuaj, cov dej khib nyiab thiab cov kav dej, cov kav dej PVC txuag tau li 16-37% ntawm kev teeb tsa thiab cov nqi zog tshaj li cov kav hlau cam.Tus nqi ntawm kev ua lub raj xa hluav taws xob yog 30-33% tsawg dua li siv lub tes tsho hlau.Qhov kev txiav txim ntawm chlorinated polyvinyl chloride (PVC) yeeb nkab nyob rau hauv cov dej txias thiab kub, piv nrog rau kev siv tib lub me me tooj liab yeeb nkab nqi txuag ntawm 23-44%.Yog li ntawd, vim yog qhov zoo ntawm PVC yeeb nkab, lub teb chaws tau nquag tsim thiab txhawb nqa PVC yeeb nkab.

2. Kev tsim khoom thiab kev siv cov yeeb nkab PVC

Txij li thaum 80 lub sij hawm, peb lub teb chaws tau qhia txawv qauv ntawm PVC yeeb nkab extrusion ntau lawm kab ntau txhiab.Tam sim no, peb lub teb chaws UPVC (hard PVC) yeeb nkab thiab yeeb nkab fittings ntau lawm cov nroj tsuag muaj ntau tshaj 600, tag nrho cov muaj peev xwm ntawm 1.1 lab tons / xyoo saum toj no, muaj ntau tshaj li 30 manufacturers nrog rau zus tau tej cov scale ntawm 10,000 tons / xyoo, muaj. Ntau tshaj 60 lub tuam txhab nrog qhov ntsuas ntawm 0.5-10,000 tons / xyoo, cov cuab yeej tsim khoom ntawm UPVC yeeb nkab thiab cov yeeb nkab fittings yog qhov pib ua tiav hauv tsev.

Nyob rau hauv peb lub teb chaws, PVC PIPE yog thaum ntxov tsim dua li PE yeeb nkab thiab PP PIPE, muaj ntau ntau yam, kev ua tau zoo heev, kev siv dav, tuav txoj haujlwm tseem ceeb hauv kev ua lag luam.Thaum kawg ntawm xyoo 1999, muaj ntau tshaj 2000 cov yeeb nkab yas hauv Suav teb, ntawm cov khoom siv txawv teb chaws suav txog li 15%.Lub peev xwm ntau lawm ntawm ntau cov kav dej yas hauv peb lub teb chaws hauv xyoo 1999 yog ntau tshaj 1.65 lab tons / xyoo, qhov tseeb tso tawm ntawm 1,000,000 tons, ntawm cov kav UPVC suav txog ntau dua 50%.

Tau ntau xyoo, nyob rau hauv lub ntiaj teb no PVC ua lag luam daim ntawv thov, lub tsev cov ntaub ntawv kev lag luam yog qhov loj tshaj plaws, thiab qhov ceev tshaj plaws nce.Nyob rau hauv xyoo tas los no, Asmeskas cov khoom siv hauv tsev tau suav txog 60% ntawm nws cov khoom lag luam tag nrho, 62% hauv Western Europe, 50% hauv Nyij Pooj, tab sis tsawg dua 30% hauv peb lub teb chaws, nrog rau chav loj hlob.Hauv cov khoom siv hauv tsev, thiab feem ntau yog rau cov yeeb nkab thiab qhov profile, nrog rau kev tsim cov kav dej thiab cov kav dej, cov kav dej ua liaj ua teb, cov yeeb nkab roj, cov yeeb nkab roj thiab lwm yam.

Kev tsim khoom thiab kev siv UPVC yeeb nkab hauv peb lub teb chaws pib tau txais kev txhim kho sai thaum lub sij hawm Ninth Tsib-Year Plan, uas feem ntau tau txais txiaj ntsig los ntawm tsoomfwv cov kev txhawb zog thiab lub zej zog kev nkag siab txog UPVC yeeb nkab khoom.

Tam sim no, daim ntawv thov ntawm cov raj yas hauv peb lub teb chaws tau tsim kho tsis tau tsuas yog nyob rau hauv kom muaj nuj nqis tab sis kuj nyob rau hauv ntau yam thiab specifications.Piv txwv li, UPVC yeeb nkab tau mus txog ntau dua 90% hauv kev siv cov kua dej hauv qee lub nroog, thiab feem ntau ntawm UPVC yeeb nkab kev lag luam tau txais txiaj ntsig zoo heev hauv xyoo tas los no.

Thaum lub sij hawm lub Kaum Ib Hlis Tsib Hlis, kev nce qib thiab kev siv cov kav dej yas feem ntau yog UPVC thiab PE cov kav dej yas, thiab lwm cov kav dej yas tshiab tau tsim muaj zog heev.Los ntawm xyoo 2005, hauv kev tsim kho tshiab, kev tsim kho tshiab thiab nthuav dav thoob tebchaws, 50% ntawm kev tsim cov kav dej yuav tsum siv cov kav dej yas, 20% ntawm cov kav dej hauv nroog yuav tsum siv cov kav dej yas, 60% ntawm cov kav dej hauv tsev, cov dej kub thiab cov kav dej kub yuav tsum. txais yuav cov kav dej yas, 50% ntawm cov kav dej hauv nroog (Dn400 lossis tsawg dua) yuav tsum siv cov kav dej yas, 60% ntawm cov kav dej hauv zos yuav tsum siv cov kav dej yas, Cov kav dej hauv nroog (cov kav dej nruab nrab thiab qis) 50% siv cov kav dej yas, kev tsim kho hlau threading tes tsho 80% siv cov yeeb nkab yas.Nws xav tias qhov kev thov rau cov kav dej yas hauv xyoo 2005 yuav muaj ntau dua 2 lab tons, feem ntau yog cov kav dej PVC.

Hauv cov teb chaws tsim, kev siv cov yeeb nkab PVC feem ntau suav txog 70-80% ntawm cov yeeb nkab yas ua lag luam, tab sis Suav PVC yeeb nkab tsuas yog kwv yees li 50% ntawm tag nrho cov yeeb nkab yas, qhov kev loj hlob ntawm PVC yeeb nkab hauv peb lub teb chaws yog. loj heev.Qhov kev faib ua feem ntawm cov kav dej PVC hauv cov teb chaws tsim muaj raws li hauv qab no: cov yeeb nkab dej tso nyiaj rau 33%, cov kav dej kav dej rau 22.3%, cov kav dej phwj rau 15.7%, cov yeeb nkab dej tso nyiaj rau 5.2%, cov yeeb nkab roj tso nyiaj rau 0.8%, lwm yam. cov yeeb nkab tso nyiaj rau 22.7%.Ntawm lawv, qhov sib piv ntawm cov yeeb nkab fittings thiab yeeb nkab yog li 1: 8.

Hauv kev tsim kho kev lag luam, muaj ob hom PVC yeeb nkab siv: ib qho yog cov yeeb nkab tsis muaj zog, thiab lwm yam yog cov yeeb nkab tsis muaj zog.cam khwb cia hlau yeeb nkab thiab tooj liab yeeb nkab siv nyob rau hauv yav dhau los raws li lub siab resistant cov ntaub ntawv, tsis tsuas yog loj corrosion, tab sis kuj yuav tsum tau nquag tu thiab hloov, tus nqi siab.Cov tsev txawv teb chaws tam sim no tau siv dav hauv cov kav dej siab, cov kav dej kub feem ntau siv cov yeeb nkab PVC.Me-caliber PVC yeeb nkab (UPVC yeeb nkab, CPVC yeeb nkab) muaj qhov zoo ntawm cov nqi qis, corrosion kuj, thiab tsis tas yuav tsum tau tu thiab hloov ntau zaus.Thiab loj txoj kab uas hla PVC siab yeeb nkab (inch nyob rau hauv 100-900mm) es tsis txhob cam khwb cia hlau yeeb nkab, txhim khu lub me av nkos yeeb nkab, dej system muaj zoo liquidity, corrosion kuj, tsis tshua muaj hnyav.Kev txuag hluav taws xob, dej zoo.PVC core txheej ua npuas ncauj tsis-siab yeeb nkab li cov kav dej hauv tsev thiab cov kav dej nag, tuaj yeem daws cov teeb meem suab nrov ntawm cov kav dej hauv tsev.Public engineering dej phwj kav siv cov yeeb nkab uas tsis muaj zog PVC, corrosion kuj, tsis yog los ntawm hydrogen sulfide yaig, lub neej ntev kev pab cuam, lub teeb yuag, tsis tshua muaj nqi installation, yooj yim mus cuag thiab foob, tsis yooj yim rau tawg.

Tsis tas li ntawd, kev tsim cov yeeb nkab thiab cov yeeb nkab hauv av yog lwm cov yeeb nkab PVC ua lag luam, tam sim no cov khoom siv hauv tsev yog cov yeeb nkab ncaj nraim, ob phab ntsa yeeb nkab thiab ib phab ntsa hauv qab.

Cov yeeb nkab ua liaj ua teb yog lwm qhov dav ntawm PVC daim ntawv thov.Peb lub teb chaws yog ib lub teb chaws uas tsis muaj dej txaus, tam sim no, feem ntau ntawm cov teb chaws hauv peb lub teb chaws tseem siv cov av irrigation, thiab cov dej khib nyiab loj heev.Vim tsis muaj dej, ntau thaj av arable tsis zoo irrigated thiab qoob loo yields tsawg.Thiab nrog PVC yeeb nkab dej, tuaj yeem txuag tau li 50% dej.Kev siv PVC ruaj ruaj los yog ib nrab-taw irrigation system cog, tsis tsuas yog txuag dej, tab sis kuj txhim kho cov txiaj ntsig, khoom siv corrosion thiab lwm yam zoo, zoo heev txuag cov nqi ntawm cov dej thiab cov chaw txau.Tam sim no, tsis muaj ib lub nroog ua tiav ntawm cov kav dej hauv peb lub tebchaws, feem ntau ntawm lub tebchaws tseem tsis muaj kev nkag siab yooj yim ntawm cov kav dej, yog li ntawd, nce kev tshaj tawm thiab kev txhawb nqa ntawm PVC yeeb nkab irrigation nyob rau hauv cov cheeb tsam, nws muaj peev xwm loj heev. .

3. Qee cov kav dej PVC feem ntau siv hauv Suav teb

UPVC raj: Daim ntawv thov loj tshaj plaws ntawm UPVC raj yog kev tsim kho kev lag luam.Tam sim no, nws tau siv dav hauv cov kav dej kais dej thiab cov kav dej hauv tsev hauv txhua lub xeev thiab nroog thoob plaws lub tebchaws, thiab feem ntau yog siv hauv kev tsim kho kev lag luam xws li cov kav dej, cov kav dej nag thiab cov kav dej.UPVC raj muaj tshuaj tiv thaiv corrosion, nws tus kheej-extinguishing thiab nplaim retardant, zoo txias kuj, du sab hauv phab ntsa, zoo hluav taws xob kev kawm, tab sis UPVC raj toughness yog tsawg, linear expansion coefficient yog loj, nqaim kub ntau yam.Piv nrog rau cov yeeb nkab hlau cam khwb cia, kev tsim thiab siv UPVC yeeb nkab tuaj yeem txuag tau 55-68% ntawm lub zog, thiab piv nrog cov yeeb nkab galvanized, kev tsim thiab siv UPVC cov kav dej tuaj yeem txuag tau 62-75% ntawm lub zog, thiab tus nqi ib chav tsev ntev ntawm tib lub specification tsuas yog ib nrab ntawm cov yeeb nkab galvanized, thiab tus nqi installation yog 70% qis dua galvanized yeeb nkab.Siv 1 tuj ntawm UPVC cov kav dej tuaj yeem hloov tau 12 tons ntawm cam khwb cia hlau yeeb nkab.Ib tuj ntawm UPVC bellows tuaj yeem txuag tau 25 tons ntawm hlau.

Core txheej ua npuas ncauj raj: Core txheej ua npuas ncauj raj yog ib hom tshiab ntawm cov raj nrog sab hauv thiab txheej txheej tsim los ntawm peb txheej txheej co-extrusion, uas yog tib yam li UPVC raj zoo tib yam.Nyob rau hauv nruab nrab yog ib tug tsawg npuas txheej nrog ib tug txheeb ze ntom ntawm 0.7-0.9.Nws cov rigidity annular yog 8 npaug ntawm qhov zoo tib yam UPVC raj, thiab nws muaj kev ruaj ntseg zoo thiab rwb thaiv tsev kub thaum kub hloov.Ntau haum rau high-rise lub tsev tso kua dej system.

Piv nrog rau cov khoom siv phab ntsa, cov tub ntxhais ua npuas ncauj txheej txheej tuaj yeem txuag tau ntau dua 25% ntawm cov khoom siv raw, thiab cov phab ntsa sab hauv compressive muaj peev xwm txhim kho zoo heev.Nyob rau hauv lub puab phab ntsa ntawm cov tub ntxhais txheej ua npuas ncauj silencer raj nrog ib tug xov tooj ntawm convex helical kab, dej nyob rau hauv lub puab phab ntsa ntawm lub raj dawb nruam spiral flow, tsim ib kem ntawm huab cua nyob rau hauv nruab nrab ntawm lub ntws yeeb nkab, thiaj li hais tias lub siab nyob rau hauv lub raj. Cov yeeb nkab yog txo los ntawm 10%, lub peev xwm dav dav yog nce los ntawm 10 npaug, qhov hloov pauv tau nce 6 zaug, lub suab nrov yog 30-40db qis dua li cov yeeb nkab UPVC zoo tib yam.

PVC radial reinforced yeeb nkab: Kev tsim cov yeeb nkab no siv cov pwm tshwj xeeb thiab molding ua raws li cov cuab yeej, yog ib hom hnyav txoj kab uas hla super reinforced iav grain yeeb nkab.Nws yog tus cwj pwm los ntawm kev txhawb nqa radial rau ntawm phab ntsa sab nrauv ntawm cov yeeb nkab, uas tuaj yeem txhim kho qhov nruj thiab compressive zog ntawm cov yeeb nkab nplhaib.Nws yog tshwj xeeb tshaj yog haum rau cov kua hauv lub nroog engineering.

Ob chav phab ntsa bellows: ob-phab ntsa bellows yog tsim los ntawm extruding ob concentric hlab tib lub sij hawm thiab ces welding lub txheej txheej ntawm lub bellows mus rau ib tug tooj liab raj nrog ib tug du sab hauv phab ntsa.Nrog rau sab hauv phab ntsa thiab corrugated sab nrauv phab ntsa, lub teeb yuag thiab lub zog siab, piv nrog UPVC raj zoo tib yam tuaj yeem txuag tau 40-60% ntawm cov ntaub ntawv raw, feem ntau yog siv rau kev sib txuas lus cable yeeb nkab, kev tsim kho cov yeeb nkab thiab cov kav dej ua liaj ua teb.

PVC lub sij hawm-los ntawm cov yeeb nkab muaj zog: los ntawm sab hauv thiab sab nrauv ob txheej ntawm cov yas extrusion molding, sandwiched nrog hluavtaws fiber ntau, zoo yooj, tuaj yeem khoov.PVC pob tshab yeeb nkab muaj cov kua qaub zoo, alkali tsis kam, roj tsis kam, kev laus ua haujlwm, tuaj yeem hloov cov yeeb nkab roj hmab, thiab tus nqi pheej yig.Siv dav hauv nitrogen, oxygen, carbon monoxide thiab lwm yam gases thiab dej, dilute alkali, roj thiab lwm yam kua tsheb thauj mus los, kuj yuav siv tau raws li dej rhaub, sprayer, gas cooker conduit.

CPVC yeeb nkab: CPVC yeeb nkab yog ib yam ntawm cov yeeb nkab yas uas muaj cua sov zoo, uas yog ua los ntawm chlorinated polyvinyl chloride nrog ntau tshaj 66% chlorine cov ntsiab lus.Lub tshav kub resistant kub ntawm CPVC yeeb nkab yog ntau tshaj 30 ℃ siab tshaj UPVC yeeb nkab, thiab qhov seem stability yog zoo dua, thiab cov linear expansion coefficient yog txo.CPVC raj muaj cov cua kub zoo, kev laus ua haujlwm, tshuaj tiv thaiv corrosion, tsis muaj deformation hauv dej kub, tuaj yeem siv rau cov dej kub, corrosion resistant kua thiab roj tsheb thauj mus los.