实木高低床尺寸床背管40mm*40mm*15mm方管焊接钢管安全护栏1400mm*250mm，Φ19*15mm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*15mm方管焊接钢管扶梯采用Φ25mm*15mmΦ19mm*15mm圆管，规格260mm*1250mm，共四档，配耐磨塑料套，用强力...