rectangular steel hollow construction steel pipes
rectangular steel hollow construction steel pipes, EN S355J2H Rectangular Steel Pipe Suppliers, Hollow S355J2H Structural Rectangular Hollow Section Tube, Rectangular Pipes, High Tensile Rectangular Pipes. What is Structural Steel Pipe? A hollow structural section (HSS) is a type of metal profile with a hollow tubular cross section. Hollow structural pipe sections mainly include circular, square, or rectangular sections.