Qhov txawv tshaj plaws ntawm tuab-walled tooj liab yeeb nkab yeeb nkab yeeb nkab copper yeeb nkab yog lub thickness ntawm lub tooj liab yeeb nkab phab ntsa. Feem ntau hais lus, nyias-walled-walled tooj liab cov yeeb nkab yog txias-kos cov txheej txheem, thaum tuab-ntsa liab coper yeeb nkab hlav cov txheej txheem kub. Yog tias cov ntsuas ntsuas kom paub qhov txawv, feem ntau ntseeg tias lub phab ntsa thickness / lub taub thuv loj dua 0.05 rau tuab-phab ntsa tooj liab cig. Nyob rau hauv cov nqe lus ntawm kev siv, rho-phab ntsa tooj liab tsuas yog siv hauv cov piping. Tawv-phab ntsa tooj liab lub raj yog siv raws li blanks rau cov chaw hollow. Nws yog siv rau cov pa luam thiab cov kav dej tseem ceeb.
Tus yuam sij rau qhov zoo ntawm tuab-walled Purple Tooj Liab yog qhov sib txawv ntawm cov phab ntsa tuab. Lub phab ntsa tuab ntawm tuab-walled polred tooj liab cov yeeb nkab liab, yog tias tsis tau tswj hwm, yuav cuam tshuam ncaj qha thiab siv cov paj liab tooj liab. Thick-walled tooj liab lub leeg thiab txoj kab uas lub taub loj-ntsa tsho yog feem ntau siv rau ntau yam tuab siv ua haujlwm. Qhov kev sib txuam ntawm phab ntsa ntawm tuab-walled tooj liab cov yeeb nkab yuav tsis raug tswj hwm cov yeeb nkab tooj liab tsis tuaj yeem tsis tau 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 yeeb nkab tuab Tshem cov txhauv thiab cov khib nyiab los ntawm lub xaib thiab khaws cov tuab-ntsa liab paj yeeb cov pob liab copper cov yeeb nkab huv. Cov chaw ua haujlwm yuav tsum tsis txhob muab cov kua qaub, alkali, ntsev, cement thiab lwm cov ntaub ntawv corrosive rau tuab-walled tooj liab yeeb nkab yeeb nkab. Ntau yam sib txawv ntawm tuab-walled tooj liab cov yeeb nkab yuav tsum tau muab cais cais tawm kom tsis meej thiab tiv thaiv kev xeb.
