Our newly invented wet sand-adding and low position sand-adding technology effectively reduces the production cost and increases its mechanical performance of the sand-adding pipe as well as the productivity by 100% compared with imported equipment. The manufacture line is composed of the following 5 machines: inner lining machine; sand adding winding machine; infrared curing machine; calibrating machine; and demoulding machine.

Technical Parameters
1)Diameter of winding products: Φ 300-3200mm/Φ300-4500mm
2)Length of winding products:0-12000mm
3)Yarn Arrangement Accuracy :±1mm
4)Winding Angel :8°<&<90°
5)Drawnwork speed:60m/min. Max 120m/min
6)Winding Form :helix winding and hoop winding
7)Sand Adding Form :lower adding;adding thickness for single layer is 3-35mm.
8)Productivity sand adding:9-12T/h
9)Zero drift: ≤±1mm
10)resin pump capacity:30kg/min, sand adding 100kg/min .
11)hydraulic pushing force of stripping: 70 tonsX 2
Waranty Period: 12 months.Computer software and electric system for whole life.