Hluav taws sib ntaus sib ntaus grooved yeeb nkab fittings 130s sib npaug tee yog cov khoom lag luam zoo thiab txhim khu kev qha tsim rau hluav taws kub hluav taws xob zoo. Ua los ntawm cov ntaub ntawv ruaj ruaj, qhov no sib npaug tee haum kom muaj kev ruaj ntseg thiab xau dawb sib txuas ntawm cov kav dej siab.