square tube 1.specification 20*20-400*400 2.standard:GB/JIS/ASTM 3.delivery within 7 days

      Square tube can be used in construction like curtain walls,hardr-rails,machines and so on.

      We are Shanghai Centrue,engaged in hot dipped galvanized.

Advantages.

1.delivery time:within 7 days for the regular sizes,special sizes can be made within 20 days.

2.large inventory;about 20000 tons.

square tube