標準
bs, JIS, ギガバイト, ASTM, API
等級
20#, 45#, Q235, Q345, Q195, Q215
surface
bright/annealed/painted etc
galvanized
pre-galvanized or HDG
powder coated
can be powder coated
use
construction,sign post etc
certification
ISO9001:2008 certified
other
hexagon,oval,other profile pipe/tube