Sectional screw flight for piling

We're proud to say that we're the foremost and professional manufacturer in China of the helicoid screw flight. We have a production capacity of more than5000 tons annually. Now we have two types of helicoid flights, one is theEndless Cold Rolled Screw Flight (inner edge is thick and the out edge is thin); the othe type is Sectional Screw Flight (same thickness in both inner edge and outer edge). We're ISO9001 certified enterprise. We manufacture thousands of different combinations of Sectional Screw Flights with inner diameter above than 40 mm, outer diameter less than 1200 mm, 200mm to 900mm in pitch and 3mm to25mm in thickness. Special size can be made by customer's request. We'll continue to develop the bigger sizewith outer diameterless than2400mm, inner diameter above 140mm andpitch within 1200mm. For sectional screw flight, it can be made into different forms as follows: * Right or left hand helix*Tapered OD and/or ID* Variable Pitch* Notched flights* With supporting board in the innerhole.Sectional screw flights can be made in different material: carbon steel (Q235, Q345), manganese steel and stainless steel.