galvanized belt square tube for construction thin wall 1.size:20*20-100*100mm ... :0.7mm-2.0mm thin wall galvanized belt square tube for construction1.size:20*20-100*100mm or 20*40- ... and marketing various of stainless steel sheets,coils,pipes and tubes.With ten years experience,our company and products have been ... No.118,Beihuan Road,Wuxi,China. galvanized belt square tube for construction thin wall