... , 168, 219 b) Square tube side length , mm : 10*10 , 12*12 , 15*15 , 18*18 , 19 * 19 , ... *25 , 28*28 , 30*15 , 30*30 , 30*60 , 36*23 , 36*36 , 38*25 , 38*38 , 40*10 , 40*20 , 40* ... *22,12*23,12*24,15*25,15*30,10*33,15*35,18*33,23*31,15 ... *38,25*35,25*45,25*50,20*58,30*60,40*75,34*80,20*100,40 ... by weaving bags .9) Min order quantity : 3 Ton 10) Supply ability :6000Ton / Month 11) Basic Informationa) Company ...