LONG LENGTH HOSE, METHOD AND APPARATUS FOR MAKING LONG LENGTH HOSE

摘要

The invention relates to bellows hose, which is capable of being used without leakage, and which has a longer length and/or diameter than has been previously achievable. A bellows hose (210) comprises an inner tubular bellows (212) and an outer tubular bellows (214). An insulation layer (216) is provided between the bellows (212 and 214). An armoured layer (218) is provided around the outer bellows (214), to improve the insulation further. The hose can have length above 30 m and a diameter above 400 mm. A method of, and apparatus for, making the hose are also described, which involve the use of a non-metallic mandrel.