galvanized belt square tube for construction thin wall 1.size:20*20- ... *100mm 2.wallthickness:0.7mm-2.0mm thin wall galvanized belt square tube for construction1.size:20*20-100*100mm or ... confirmed3.payment term:T/T,L/C at sight,D/P,etc. Hi Sir/Madam,Thank you very much for visiting ... , Eastern Steel Market, No.118,Beihuan Road,Wuxi,China. galvanized belt square tube for construction thin wall