TRB30-CT5m triangular bolt circle
TRB30-CT5m , round truss ,outside diamter 5m, 6*60 arcs (divided in 6pcs ,60 degree)
made from triangular bolt truss
TRB30-CT1.5m,outside diameter 1.5m, 2*180 arcs ( divided in 2pcs *180 degree)TRB30-CT2m,outside diameter 2m, 2*180 arcsTRB30-CT3m,outside diameter 3m , 3*120 arcsTRB30-CT4m,outside diameter 4m, 4*90 arcsTRB30-CT5m, outside diameter 5m 6*60 arcsTRB30-CT6m,outside diameter 6m, 6*60 arcs