Lub ntsiab txhais ntawm ABS tube yog dab tsi?
ABS engineering plastics yog polymers ntawm peb cov khoom siv tshuaj: acrylonitrile, butadiene thiab styrene.
Nws qhov zoo tshaj plaws (1) yog tsis tshua muaj zog rau kev txhuam. (2) Cov kev ua haujlwm zoo dhau los. Lub yeeb nkab ntawm ABS yuav tawg thaum muaj zog sab nraud thiab cov khoom tsis tawg. (3) Muaj zog toughness.
Lub ntsiab lus tseem ceeb tshaj li ntawm 10 nominal diameters DNl5-DN400. Cov yeeb nkab yog luv nqi ntawm 0.6MPa, 0.9MPa thiab 1.6MPa. Tus kav raj dej muaj qhov sib txawv rau cov dej haus zoo, thiab qhov txiaj ntsig zoo thiab nyiaj txiag tau tiav. Txoj kev txuas ntawm cov yeeb nkab yeeb nkab yog hom kua hnab txias heev.
2.5 (steel pob txha reinforcement) yas yeeb nkab yas
Cov pob txha ntawm cov pob txha muaj zog dua tshiab [5] yog ib hom tshiab ob tog sib tiv thaiv kev tiv thaiv kev tiv thaiv kab hlau uas muaj hlau pob zeb nrog pob zeb thiab thermoplastic raws li cov khoom sib nrauj, uas yog sib xyaw ua ke ntawm cov kev tswj kom tsis txhob muaj kev tswj ntau. Lub hauv paus khoom yog qhov sib npaug ntawm polyethylene, polypropylene, ntoo khaub lig txuas polyethylene, thiab cov khoom tsim nyog, antioxidants, ultraviolet stabilizers, thiab colorants tej zaum yuav ntxiv. Cov khoom siv reinforcing yog ib qib high-quality steel mesh thiab ib qho qes-carbon cov kab hlau ntoo mesh. Raws li daim tawv nqaij, nws muaj peev xwm muab faib ua: hlau ntxaij pob txha reinforced yas yeeb nkab thiab steel mesh skeleton reinforced yas yeeb nkab yeeb nkab. Raws li lub hauv paus ntaub ntawv
Muab faib rau hauv: steel pob txha pob zeb ua kom muaj zog siv hluav taws xob polyethylene yeeb nkab, steel ncej reinforced polypropylene yeeb nkab, steel cev pob zeb pob zeb txuas ntxiv rau cross-linked polyethylene.
Cov yam ntxwv ntawm cov yeeb nkab yog: (1) muaj zog muaj kabmob muaj peev xwm, steel mesh skeleton reinforced yas yeeb nkab yeeb nkab nrog diameter ntawm de50-200, nws qhov muag siab ntawm 1.00-2.50MPa; steel mesh skeleton reinforced yas yeeb nkab yas thiab nws lub raj Lub taub yog de80-300, uas yog raug rau siab ntawm 1.00-3.50 MPa. (2) Ob leeg yooj yim thiab siab zog thiab rigidity. Cov kev sib txuas yeeb nkab muaj ob hom kev sib txuas ntawm electrofusion thiab flange kev twb kev txuas. Pipeline txuas raws li txoj cai yuav tsum muaj siab, thiab tus nqi ntawm cov yeeb nkab thiab cov yeeb nkab fittings yog tus siab, uas tseem txwv tsis pub nws daim ntawv thov uas nws kim heev.
PVC-U tub thiab ABS tubes muaj ntau yam hauv phau ntawv qhia kev tsim. Cov kev cai tswjfwm rau kev lag luam hauv tsev nyob sab hauv tsev ntawm PE kav tau raug tshuaj xyuas nyob rau thawj ib nrab ntawm lub xyoo no. Nyob rau hauv cov nqe lus ntawm tus nqi, PVC-U raj muaj kev zoo dua HDPE lub raj. Txawm li cas los xij, nws muaj kev ploj tsis zoo thiab muaj kev kub ntxhov thiab tsis yooj yim rau khoov.
Los ntawm cov ntsiab lus ntawm cov kev soj ntsuam hauv tuam tsev hauv nroog ua tiav xyoo 1996, nws pom tau tias nyob rau hauv cov dej hauv tsev tu dej, qhov kav dej hauv qab DN500 yog li 87.18% (xam los ntawm ntev); Thib ob, txoj kab uas hla ntawm txoj yas yeeb nkab yog nyob rau hauv ib chav qis, uas muaj kev fajseeb khwv nyiaj txiag nrog rau cov yeeb nkab hlau. Raws li cov hlua kab nce, qhov kev lag luam nyiaj poob qis. Thib peb, txoj kab hluav taws xob loj cov yeeb nkab siv yeeb nkab muaj ntau ntau cov chaw lag luam vim muaj peev nyiaj txiag loj. Nws yog ib qho yooj yim uas yuav ua rau cov yeeb nkab fittings thiab cov kav dej kom tsis txhob raug phom sij, uas coj tsis haum rau kev tsim kho. Yog li ntawd, kev tsim cov dej hauv cov kav dej hauv cov kav dej yuav tsum yog raws DN500 los yog luv dua, ....
Xyoo Fifth Five-Year Plan rau cov Khoom Siv Tshuaj Cov Khoom Siv Hauv Tsev thiab Daim Ntawv Teev Npe ntawm Txoj Kev Loj Hlob xyoo 2010 [6] qhia meej meej hais tias los ntawm 2005, txoj kev sib koom ua lag luam ntawm cov kav dej ntau hauv cov teb chaws muaj tshaj 50%. Ntawm lawv, 50% ntawm cov kav dej hauv cov kav dej (hauv qab DN400) siv cov kav dej yas, thiab 60% ntawm cov kav dej siv cov kav dej siv. Thaum xyoo 2010, 70 feem pua ntawm cov dej hauv cov kav dej (hauv qab DN400) siv cov kav dej yas, thiab 70% ntawm cov kav dej siv hauv cov kav dej siv cov kav dej yas.
Nyob rau tib lub sij hawm, thaum tsim kom muaj cov ntaub ntawv kho cov ntaub ntawv thiab cov yeeb nkab yas hauv teb chaws "China Fifth Year", nws tau hais meej tias qhov kev nce qib thiab kev siv cov yas kav ntev thaum lub sijhawm "Fifth Five Year Plan" U kav thiab PE kav dej. Daim ntawv thov ntawm PE yeeb nkab hauv Suav teb pib lig thiab qhov chaw loj hlob loj. Thiab kev tsim cov yas yas kav hauv lub sijhawm "10th tsib lub xyoos" npaj siab yuav ua rau PE kav dej. Daim ntawv thov kev tsim cov dej nyob sab nrauv yas yeeb nkab yog pom tseeb.
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Hu rau: Eillen
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