Lub hauv paus ntsiab lus ntawm kev xaiv cov yeeb nkab dej: kev nyab xeeb thiab kev ntseeg siab yog cov ntsiab lus tseem ceeb tshaj plaws, vim tias lub tsev dej xa dej yeeb nkab network yog nyob rau hauv siab, cov kav dej yuav tsum tau muab kaw kom zoo, thiab cov neeg kho tshuab lub zog tuaj yeem tiv taus qhov tsim qib siab. Thaum cov dej ntws tawm thiab cov kav dej tawg yuav ua rau tib neeg cov khoom puas tsuaj. Cov yeeb nkab yuav tsum muaj peev xwm tiv taus kev vibration shock, dej rauj, thermal expansion thiab contraction, thiab lwm yam, thiab tiv taus qhov kev sim ntawm lub sij hawm tsis muaj to los yog tawg; Kev huv huv feem ntau yog hais txog seb cov khoom siv raw ntawm cov yeeb nkab tau dhau los ntawm kev soj ntsuam ntawm lub chaw saib xyuas kev noj qab haus huv thiab kev tiv thaiv kab mob, tshwj xeeb tshaj yog cov kev hloov kho. , auxiliaries, additives, thiab lwm yam. yuav tsis ua mob rau tib neeg lub cev; kev lag luam, nyob rau hauv lub ntsiab lus ntawm kev ua tau zoo ntawm kev ua haujlwm ntawm kev nyab xeeb thiab kev noj qab haus huv dej, los ntawm kev txheeb xyuas kev lag luam thiab kev lag luam, cov kav dej xa dej nrog kev nqis peev uas pheej yig tshaj yog xaiv. Thaum muab piv cov nqi ntawm cov kav dej, nws tseem yuav tsum tau muab piv rau cov nqi ntawm cov yeeb nkab fittings, thiab kuj sib piv cov nqi ntawm kev tsim kho thiab kev teeb tsa kom txuag tau cov nyiaj tsim kho; Nws yog recyclable, ib hom yeeb nkab tuaj yeem raug qhuas los ntawm cov kws tshaj lij, thiab qhov tseem ceeb yog vim li cas nws tuaj yeem rov siv dua thiab rov siv dua thiab tsis ua rau muaj kuab paug ib puag ncig. Raws li kev tshawb fawb, nws tau 5,{1}} xyoo txij li thaum cov kav dej tooj liab tau pom nyob rau hauv Egyptian pyramids, thiab cov kav hlau galvanized tau yooj yim xeb thiab cuam tshuam rau cov dej zoo thiab tau txwv ntau mus txog thaum lawv raug tshem tawm. Rau cov kav dej yas, feem ntau ntawm cov pov tseg tuaj yeem rov ua dua thiab rov siv dua. Niaj hnub no, thaum tib neeg muaj kev txhawj xeeb ntau ntxiv txog lub ntiaj teb ib puag ncig, cov kav dej tiv thaiv ib puag ncig yuav dhau los ua tib neeg xaiv thawj.
