1, steel dormitory bunk bed 2, used for school, college, military 3, steel tube or pipe with 1.5mm thickness sanwei school bed series:steel dormitory bunk bedmodel number: bb-1203size: l2000*d900*h1800mmmaterial: column: 48*48*1.5mm steel tube frame: 30*50*1.5mm steel tubewe can supply wooden board or mattress for your choicecoating color: grey, green, any other colors, Pantone numbershipping ...