EN877 tus qauv qhia txog kev ua tau zoo ntawmcam khwb cia hlau kav, fittingsthiablawv connectorssiv nyob rau hauv gravity drainage systems nyob rau hauv cov tsev.TS EN 877: 2021yog qhov tseeb version ntawm tus txheej txheem, hloov lub yav dhau los EN877: 2006 version. Qhov sib txawv tseem ceeb ntawm ob lub versions ntawm kev xeem yog raws li hauv qab no:
1. Test Scope:
TS EN 877: 2006: Feem ntau kuaj cov khoom siv kho tshuab thiab cov khoom sib khi ntawm cov kav dej thiab fittings.
TS EN 877: 2021: Raws li qhov kev sim thawj zaug, ntxiv cov kev xeem yuav tsum tau ua rau lub suab rwb thaiv tsev ua haujlwm, tshuaj tiv thaiv corrosion, hluav taws kub thiab lwm yam ntawm cov kav dej.
2. Cov txheej txheem xeem:
EN877: 2021 hloov kho qee txoj kev sim ua kom lawv muaj kev tshawb fawb thiab tsim nyog, xws li:Kev ntsuas tshuaj tiv thaiv corrosion: Cov kev sim tshiab thiab cov kev sim siv tau siv, xws li siv pH2 sulfuric acid tov es tsis txhob siv cov tshuaj hydrochloric acid qub, thiab ntxiv cov tshuaj tiv thaiv corrosion rau ntau cov tshuaj.
Kev xeem acoustic kev ua tau zoo: Ntxiv cov kev xeem uas yuav tsum tau ua rau lub suab rwb thaiv tsev ntawm cov raj xa dej, xws li siv lub suab siab qib txoj kev ntsuas lub suab rwb thaiv tsev ntawm lub raj xa dej.
Kev ntsuas hluav taws kub: Ntxiv cov kev ntsuas rau kev ua haujlwm ntawm cov hluav taws kub ntawm cov kav dej, xws li siv txoj kev txwv hluav taws los ntsuas qhov ncaj ncees ntawm cov kav dej hauv qab hluav taws.EN877: 2021 siv cov xim nrog hluav taws kub qib A1
3. Cov cai xeem:
EN877: 2021 tau nce qhov kev xeem yuav tsum tau ua rau qee qhov ntsuas kev ua tau zoo, xws li:Tensile zog: nce ntawm 150 MPa rau 200 MPa.
Elongation: nce ntawm 1% mus rau 2%.
Tshuaj tiv thaiv corrosion: Ntxiv corrosion kuj yuav tsum tau rau ntau yam tshuaj, xws li corrosion kuj yuav tsum tau rau alkaline tshuaj xws li sodium hydroxide thiab potassium hydroxide.
4. Daim ntawv ntsuam xyuas:
EN877: 2021 muaj cov kev cai nruj dua ntawm cov ntsiab lus thiab cov qauv ntawm daim ntawv xeem, xws li:Yuav tsum tau daim ntawv tshaj tawm kev xeem kom suav nrog cov ncauj lus kom ntxaws xws li cov txheej txheem xeem, cov xwm txheej xeem, cov qhab nia xeem, thiab cov lus xaus.
Daim ntawv tshaj tawm kev xeem yuav tsum tau muab los ntawm lub koom haum kuaj kev tsim nyog. Piv txwv li,DINSEN tau lees paub los ntawm CASTCO.
Tus qauv EN877: 2021 yog qhov dav thiab nruj dua hauv kev sim dua li EN877: 2006 tus qauv, qhia txog cov kev tsim kho tshiab thiab kev lag luam xav tau hauv kev lag luam cam khwb cia hlau yeeb nkab. Kev ua raws li tus qauv tshiab yuav pab txhim kho qhov zoo ntawm cov khoom siv hlau cam khwb cia thiab txhawb kev nyab xeeb thiab kev ntseeg siab ntawm lub tsev cov kav dej.
EN877:2021 vs EN877:2006
Post lub sij hawm: Mar-17-2025
