
            
                Post Tension Steel Duct
            
                
	 
	1.used at working site,making duct at working site,
	2.operated easily, nimble structure, working steady
	3.make round duct or flat duct, used for post tension
	4. steel strip can be 0.35mm, 0.4mm
	5. making black steel duct and galvanized steel duct 
	spiral prestressed corrugated pipe making machine
	corrugated pipe making machine
	 
	parameters of making spiral round duct:
	
		
			| inner diameter | 35mm | 40mm | 45mm | 50mm | 55mm | 60mm | 65mm | 70mm | 75mm | 
		
			| outer diameter(mm) | 40mm | 45mm | 50mm | 55mm | 60mm | 65mm | 70mm | 75mm | 80mm | 
		
			| gross weight(kg/m) | 0.37 | 0.43 | 0.48 | 0.56 | 0.63 | 0.7 | 0.76 | 0.86 | 0.96 | 
	
	 
	 
	
		
			| 80mm | 85mm | 90mm | 95mm | 100mm | 105mm | 110mm | 115mm | 120mm | 125mm | 130mm | 
		
			| 85mm | 90mm | 95mm | 100mm | 105mm | 110mm | 115mm | 120mm | 125mm | 130mm | 135mm | 
		
			| 1.06 | 1.16 | 1.26 | 1.36 | 1.46 | 1.56 | 1.66 | 1.8 | 2.02 | 2.3 | 
	
	