Ashish Polyplast. Ltd manufactures Light Weight Non-Metallic Duct Hose. Ashish Polyplast. Ltd offers a wide range of industrial high pressure nylon reinforced flexible hoses for use in agriculture, fire fighting, chemical industries and engineering. The Light Weight Non-Metallic Duct Hose is widely used in pneumatic transportation, dust collecting equipments, washing machines and air conditioning equipments in buildings. The Light Weight Non-Metallic Duct Hose is suitable for carding machines and draw frames in Textile machinery.