Metal Steel Bunk Bed material steel tube thickness 0.8mm tube size 50mm,38mm Steel Two Layers Bed For School Use-material metal-tube thickness 0.8mm-tube size 50mm,38mm-sampling day 10 days-delivery time will be 30 to 35 days after we get your deposit-size OEMSteel Two Layers Bed For Shool Use-light and durable-main tube is fixed and other tube can be knocked down-competitive price and best ...