螺丝铝合金TRUSS架450mmx450mm BN-GB4545

Specifications:
BN-GB4545-100 = 1M
BN-GB4545-200 = 2M
BN-GB4545-300 = 3M
BN-GB4545-400 = 4M
BN-GB4545: 450x450mm box truss, main tube 50x3mm
BN-GB4545 allowable loading