Square steel tube

square steel tube
Dear Sirs,
We are interested in buying steel square tubes WT 6mm :
40x40mm length 6-12m
60x60mm length 6-12m
80x80mm length 6-12m
100x100mm length 6m-12m
Each section per 100mt to start, total: 4x100=400mt
Pls,send yr best price FOB.