... the product can be complete knocked down freely. steel bunk bed 1 15years professional experience 2 knock down ,easy assemble 3 ... .0 square tube, towel rail 19*1.2 circular tube2.bed: main pipe30*50*1.2 square tube, crossbar 25*25 ... *1.2 square tube, there are 5 crossbars each bed, the guardrail of the upper bunk 20*20*1.3 ... offer any color and style as your requirement. steel bunk bed