AS1163 Rectangular Hollowsections( RHS) Product ltem: structural Steel Hollow sections PIPE TYPE:STRUCTURAL STEEL HOLLOw sECTIONS,AS1163structural steel hollow sections,AS1163 rectangular hollowsections( RHS),AS1163 C250 Rectangular hollow sections(RHS),AS1163 C350 Rectangular ho Outer Diameter : 50 x 25mm to 40ox 300mm Standard:AS1163 C250,C250LO,C350,C35OLO,C450,C450LOEnds: Plain,Bevel,Screwed,Threaded