-
Pre galvanized steel yeeb nkab / steel raj rau ntau yam kev siv
H-beam yog cov qauv nqaj ua los ntawm cov hlau dov.Nws yog incredibly muaj zog.Nws tau txais nws lub npe vim nws zoo li lub peev H tshaj nws cov hlaws, dov hlau nrog H-shaped cross-section.Sib npaug thickness nyob rau hauv ob qho tib si flanges uas tsis muaj taper ntawm sab hauv.