Feem ntau, cov kav hlau dub thiab cov pa roj carbon steel kav yuav luag tib cov txheej txheem txuas rau vuam. Qhov ntawd yog nyob rau hauv kev vuam dav dav, tab sis tsis yog qee qhov kev thov tshwj xeeb zoo li kub txias heev. Cov yeeb nkab steel dub tsis yog qhov tshwj xeeb tshaj plaws tab sis zoo ib qho lo lus siv feem ntau siv los ntawm plumbers kom paub qhov txawv ntawm cov yeeb nkab steel los ntawm galvanized steel yeeb nkab.
Cov kav hlau dub cov hlau tau raug pov los ntawm ntau qib ntawm cov hlau ductile lossis malleable, hos cov pa roj carbon steel kav feem ntau welded lossis seamless. Cov kav hlau dub yog siv rau cov av hauv av los yog cov dej hauv qab xws li rau cov kav dej loj thiab ceg ntoo uas muaj cov kua qaub. Nws tseem siv tau rau cov kav dej kav dej thiab ua khoom rau kis dej txias rau dej 4 ″ taub thiab sab saud. Kev lag luam tuag casting yog qhov tsis tsim nyog rau cov kab uas raug nthuav tawm cov kab mob sib kis, kev sib txig sib luag, thiab kev co tshwj tsis yog cov yeeb nkab hnyav heev. Nws tsis tsim nyog rau cov tso cua kub superheated lossis rau qhov kub siab tshaj 575 degrees F. Nrum cov kav hlau rau hauv qhov siv hauv av (xws li cov kav dej qias) feem ntau muaj lub tswb nrov thiab spigot xaus qhov uas cov kav xa dej feem ntau muaj qhov flanged kawg.
