Extruder Barrel and Screw Specification : Ø15mm~Ø500mm 
Draw Ratio: L/D=7~55 
 
	
	
		
			
				
					
						Technical Parameter
					
				
			
			
				
					Quenching and Tempering Hardness:HB280-320
				
				
					Screw Straightness:0.015mm
				
			
			
				
					Nitriding Hardness:HV850-1000
				
				
					Nitrided Chromium Coating Surface Hardness≥900HV
				
			
			
				
					Nitriding Depth :0.45~0.7mm
				
				
					Chromium Coating Thickness :0.025~0.10mm
				
			
			
				
					Nitridng Brittleness :2 Level
				
				
					Duplex Alloy Hardness:HRC50-65
				
			
			
				
					Surface Roughness:≤Ra0.4
				
				
					Duplex Alloy Depth:0.8~2.0mm
				
			
			
				
					Materials and Technologies 
				
			
			
				
					Quality 38CrMoAIA (41CrAIMo7)
				
				
					SKD61(H13)
				
			
			
				
					Quality Duplex Stainless Steel
				
				
					Gr12MoV
				
			
			
				
					42CrMo
				
				
					Quality Powder Metallurgy Materials
				
			
			
				
					40C…