床背管:40mm*40mm*1.5mm方管焊接钢管。安全护栏:1400mm*250mm,!19*1.5mm圆管,护栏左端直接固定在外围立管以加强强度。铺板框采用30mm*50mm*1.5mm方管焊接钢管。扶梯:采用圆管!25mm*1.5mm、!19mm*1.5mm圆管,规格260mm*1250mm, 共四档,配耐磨塑料套,用强力胶固定铁床铺板:采用杉木1900mm*70mm*18mm*12根,底档900mm*40mm*30mm*7根,床铺板应能通过冲切试验(冲切体质量为25kg,冲击高140mm,10次,无松动变形)