... can be adjusted every 2".A,Hot rolled steel moulding, bearing evenly.B,Various specification and load capacity to meet different ... .A,Polyhedron with thirteen faces.B,Pitch is 50 mm, beam is adjustable.C,Triangle hole easily tightens to hitch steel and strengthens ... *3000 with 90*70 standing column2) Its crossbeam is also 50*120<mm> with 2.5depth.3)The thicness of standing column ...