H beam steel structure warehouse, workshop, hangar, exhibit hall; Standard anti-corrosion ... painting processing; Application:Special for light steel structure construction.H beam is an new production for construction and easy to be ... mechanical area. 7.Large beams of trains,automobiles and tractors. Size: Standard H, Standard:DIN, JIS,ASTM, GB Grade:GB/ ... DIN:St37-2,S355N JIS:SS400 ASTM:1020 Steel beam