4. Dab tsi yog tus nqi ntawm kub - dip galvanized steel yeeb nkab?
3. Vim li cas cov khoom ntawm cov hlau ua hluav taws kub kub galvanized?
2. Dab tsi yog lub hauv paus ntsiab lus ntawm kub - dip galvanizing?
1. Dab tsi yog kub - dip galvanizing?
30. Vim li cas koj kauv welded yeeb nkab xav tau demagnetization? Demagnetization yog dab tsi?
29.3.Why Kev Soj Ntsuam Cov Tshuab Ultrasonic?
29.2.3.x Cov qauv kev soj ntsuam dab tsi rau lub teeb?
29.2.2. Dab tsi yog qhov zoo ntawm TV soj ntsuam?
29.2.1.x Dab tsi yog txoj hauv kev soj ntsuam rau lub teeb tshuaj xyuas?
29.2. Vim li cas x - ray kev kuaj xyuas?
29.1. Vim li cas ua ib qho kev sim dej lim dej zoo li no?
29. Yuav ua li cas kom ntseeg tau tias qhov zoo ntawm cov laug kauv welded kav? Yuav tsum muaj kev ntsuam xyuas dab tsi?