submerged arc spiral welded (SSAW) steel yeeb nkab yog qhov zoo tagnrho rau kev siv hauv cov qauv siv, xws li kev ua haujlwm hauv lub hauv paus (pile casing lossis piling) thiab hauv wharf, choj thiab lub tsev tsim ua haujlwm vim tias nws muaj qhov zoo ntawm lwm cov ntaub ntawv.
Cov txheej txheem muab kauv tsim ua cov yeeb nkab tsim kom raug uas ua rau cov khoom siv tau yooj yim thiab, ua ke nrog cov khoom siv vuam zoo thiab kev sim, ua kom muaj kev vam meej.
