Cov pa roj carbon steel yeeb nkab yog cov khoom siv ruaj khov ua los ntawm carbon steel.
CHS Steel Pipe Standard: ASTM A53, API 5L, ASTM A252, ASTM A795, ISO65, DIN2440, BS1387.BS1139, EN10255, EN39, JIS3444, GB / T 3091 & GB / T13793
RHS SHS Steel Pipe Standard: ASTM A500, EN10219, EN10210, JIS3466, GB / T 6728
Daim ntawv thov: Kev tsim kho / tsev cov ntaub ntawv steel yeeb nkab, steel qauv, laj kab ncej steel yeeb nkab,
Scaffolding yeeb nkab, Hluav taws xob tiv thaiv steel yeeb nkab, Tsev cog khoom steel yeeb nkab, Tsis tshua muaj siab ua kua, dej, roj, roj, kab yeeb nkab, Irrigation yeeb nkab, Handrail yeeb nkab
