Thick ntsaed tooj dag raj yog siv rau machining, tooj bushing, bushing thiab lwm yam kev siv. Cov khoom siv ntawm tuab-walled tooj dag raj tau muab faib ua: h59, h}}}, h62, H65, H68. Qhov txawv tshaj plaws ntawm tuab-walled tooj dag raj thiab nyias-walled tooj dag raj yog lub tuab ntawm tooj liab raj ntsa. Feem ntau hais lus, nyias-walled tooj dag raj yog txias-kos cov txheej txheem, thaum tuab-ntsa-walled tooj dag raj feem ntau kub-pus. Yog tias koj paub qhov txawv ntawm cov kev ntsuas, nws yog feem ntau ntseeg hais tias lub phab ntsa tuab dua thiab cov cheeb tsam tuab / txoj kab uas muaj sib npaug zos lub raj. Hais txog kev siv, nyias-walled tooj dag raj yog siv hauv cov kav dej. Thick-walled tooj dag raj feem ntau yog siv rau lub hollow qhov chaw ntawm seem. Nws yog siv rau cov bushurized bushings, tooj bushings, tshuab fittings, tshuab qhov chaw ua thiab lwm yam.
Tus yuam sij rau qhov zoo ntawm tuab-walled tooj dag raj yog qhov sib txawv ntawm cov phab ntsa tuab. Lub phab ntsa tuab ntawm tuab-walled tooj dag yeeb nkab yeeb, yog tias tsis tswj, yuav cuam tshuam ncaj qha thiab siv ntawm tooj dag yeeb nkab. Thick-walled tooj dag raj thiab cov uas hla loj dua tshiab Qhov kev sib txuam ntawm phab ntsa ntawm cov raj thicked tooj dag zog yuav tsis tswj hwm cov khoom lag luam tom qab, thiab cov khoom lag luam tuab tag nrho tsis tuaj yeem tswj hwm. Cov chaw tsim nyog thiab cov chaw khaws khoom lag luam yuav tsum tau xaiv. Lub vev xaib lossis cov chaw nyob rau khaws cia cov leeg tawv ntoo tuab Tshem cov nroj thiab cov khib nyiab los ntawm lub xaib thiab khaws cov tuab-phab ntsa cov nqaij ntshiv cov leeg. Cov chaw ua haujlwm yuav tsum tsis txhob muab cov kua qaub, alkali, ntsev, xis mas thiab lwm cov ntaub ntawv corrosive rau tuab-walled tooj dag raj. Ntau yam sib txawv ntawm tuab-walled tooj dag cov leeg yuav tsum tau muab cais cais kom tiv thaiv tsis meej pem.
