Qee lub hauv pem teb cua sov tooj dag fittings tuaj yeem siv tau 50 xyoo, uas feem ntau yog nyob ntawm qhov zoo ntawm cov tooj liab ntshiab. Yog tias tsis muaj teeb meem nrog qhov zoo ntawm cov tooj liab ntshiab, nws tuaj yeem siv rau ntau tshaj 50 xyoo. Txawm li cas los xij, qhov zoo ntawm kev saib xyuas zoo rau tooj dag fittings ntawm cov kav dej hauv pem teb yog feem ntau qis, thiab tooj dag fittings kuj yog corrosion-resistant. Nws yog feem ntau pom zoo kom siv electroplated tooj dag fittings. Ntawd yog, txheej tiv thaiv yog plated rau saum npoo ntawm tooj liab sib koom, uas yog, npib tsib xee plating. Nickel tiv taus corrosion heev, uas ua rau kom lub neej ntawm cov fittings thiab yog ib puag ncig tus phooj ywg. Lub sijhawm lav zoo uas tau teev tseg los ntawm lub xeev yog 16 lub hlis, thiab lub neej kev pabcuam tshwj xeeb nyob ntawm cov khoom siv thiab txheej txheem ntawm cov khoom siv tooj liab, nrog rau kev teeb tsa thiab siv. Yog hais tias tus qauv tooj liab yog thiab tau dezincified, lub installation kuj ua tau raws li tus qauv, thiab cov dej kub ib txwm tsis muaj teeb meem rau 20 xyoo. Tab sis yog tias cov ntsiab lus tooj liab tsawg dhau thiab kev teeb tsa tsis tau raws li tus qauv, nws nyuaj rau qhia. Yog li ntawd, nyob rau hauv tus txheej txheem ntawm kev siv, yuav tsum tau them nyiaj mloog mus rau kev saib xyuas ntawm tooj dag fittings kom txo tau ntau yam teeb meem thaum siv.
