Los tubos cuadrados | 							 			 | 							 			 | 		|||||
				6.5*6.5 | 							10*10 | 							12*12 | 							14*14 | 							16*16 | 							18*18 | 							 			 | 							 			 | 		
				19*19 | 							20*20 | 							22*22 | 							23*23 | 							25*25 | 							28*28 | 							 			 | 							 			 | 		
				30*30 | 							35*35 | 							36*36 | 							38*38 | 							44, 45 x 44, 45 | 							50*50 | 							 			 | 							 			 | 		
				80*80 | 							 			 | 							 			 | 							 			 | 							 			 | 							 			 | 							 			 | 							 			 | 		
				 			 | 							 			 | 							 			 | 							 			 | 							 			 | 							 			 | 							 			 | 							 			 |