Lub ntsiab ntau lawm ntawm ф 48-3620mm phab ntsa thickness 6mm-40mm reinforced qib 3PE seamless steel yeeb nkab, roj thiab roj pipeline, roj thiab roj kis tau tus mob project coated yas yeeb nkab, coated yas hluav taws kev ruaj ntseg yeeb nkab, hluav taws kub tiv thaiv sab hauv thiab sab nrauv coated yas steel yeeb nkab, kub dip yas fais fab threading steel yeeb nkab, cable tiv thaiv yeeb nkab.