1.Technology:Hot Rolled 2.Standard:Q235,SS400,S235AR+JR,ASTMA36 3.Dimensions: ... *16-250*125mm 4.Thickness3-18mm,length6-12m 1.Technology:Hot Rolled2.Standard:Q235,SS400,S235AR+JR,ASTM A363. Dimensions:20 ... used in some frame part such as construction joist frame iron tower, derrick frame and so on. Reference data:STANDARD SECTIONAL ...