Kaum xyoo dhau los, cov kav dej haus ntawm qee lub tebchaws tsim kho xws li Tebchaws Meskas, Tebchaws Europe thiab Nyij Pooj tau maj mam tshem tawm cov kav dej xws li cov kav dej galvanized, cov kav dej tooj liab thiab cov kav dej PPR, thiab hloov mus siv cov kav hlau tsis muaj steel. Cov kav dej stainless hlau tau dhau los ua cov kav dej loj hauv cov teb chaws tsim. Cov kav dej stainless hlau tau dhau los ua cov khoom siv zoo tshaj plaws rau kev teeb tsa dej thiab hluav taws xob hauv ntiaj teb kev lag luam kho kom zoo nkauj hauv tsev. Xyoo 1982, Lub Koom Haum Nyij Pooj Dej Ua Haujlwm tau tsim cov qauv rau "stainless steel kav rau dej (JWWAG115)" thiab "stainless steel yeeb nkab fittings rau kais dej (JWWAG116)". Tam sim no, tus nqi nkag ntawm cov kav hlau stainless hauv Tokyo, Nyiv tau mus txog 100 feem pua.
Hauv Tebchaws Meskas, cov kav dej tsis muaj steel hlau tau ua tiav hauv ntau tshaj 100 qhov chaw kho dej haus thiab cov kua dej sib kis. Xyoo 2003, tsab ntawv tshaj tawm tshiab ntawm "Dej thiab Housing Standard" ntawm American International Standards Committee tau suav nrog cov kav dej stainless dua, qhia tias kev siv cov kav dej stainless hlau tau raug pom zoo los ntawm Tebchaws Meskas, thiab lwm lub tebchaws xws li Kev Noj Qab Haus Huv. Canada, Lub Koom Haum Saib Xyuas Kev Noj Qab Haus Huv Ntiaj Teb thiab Netherlands Pawg Neeg Saib Xyuas Kev Noj Qab Haus Huv kuj tau lees paub tus qauv no.
Xyoo 1980, Lub Tebchaws Yelemees tau siv ntau cov kav dej stainless hlau hauv cov dej. Lub tuam txhab German xxx muaj cov khoom tsim tawm txhua xyoo ntawm 40.6 lab cov yeeb nkab fittings Cov ntaub ntawv muag khoom hauv xyoo 2001 tau pom tias kev muag khoom ntawm stainless hlau yeeb nkab fittings suav txog 65 feem pua ntawm tag nrho cov muag khoom. Txij li thaum xyoo 1995, cov kav hlau stainless tau siv dav hauv ntau lub nroog.
Cov kav dej tooj liab tau siv thawj zaug hauv UK. Tom qab ntawd, vim qhov corrosion ntawm cov kav dej tooj liab los ntawm cov dej tsis zoo, cov kav dej tau yooj yim kom xau. Tom qab ntawd, tag nrho cov kav dej kub thiab dej txias tau hloov los ntawm cov kav dej stainless hlau. Tom qab ntau tshaj 10 xyoo ntawm kev siv, cov kav dej tau muab tshem tawm thiab kev siv cov kav dej stainless hlau tau kawm. Cov txiaj ntsig tau pom tias tsis muaj qhov tshwm sim corrosion hauv lub raj.
National policy support
◆ Hauv Suav teb, xyoo 2006, Ministry of Housing and Urban-Rural Development of China tau tshaj tawm lub teb chaws tus qauv "Technical Regulations for Pipeline Direct Drinking Water System" (tus lej CJJ110-2006). Tus txheej txheem kom meej meej yuav tsum tau siv cov kav dej stainless hlau rau cov dej hauv tsev. Vim nws qhov tshwj xeeb zoo, kev nyab xeeb, kev nyiam huv, kev tiv thaiv ib puag ncig, kev noj qab haus huv, kev tiv thaiv corrosion, siab tsis kam thiab lwm yam ntxwv, cov kav dej stainless hlau tau maj mam paub los ntawm ntau tus neeg. Cov kav dej stainless hlau hauv tsev tau nyuam qhuav pib siv, yog li cov kav dej stainless hlau yuav yog qhov sib txawv ntawm cov kav dej hauv tsev.
