螺丝铝合金TRUSS方管架300mmx300mm B3030

Specifications:
B3030-100 = 1M
B3030-200 = 2M
B3030-300 = 3M
B3030-400 = 4M
B3030: 300x300mm box truss, main tube 50x2mm
B3030 allowable loading