... ranges:I-beam, H-beam, U-profiles, angle, square tube, round tube, square and round rod, kickplate, Omega hand rail, thickness is ... markets: grating floor, handrail, working platform, undergrand pression pipe, stairs,etc. 3. Building construction markets: oversize bridge ... movable house structure,working platform,window frame, window sash and its components,etc. 4. foundation engineering markets: ...