IS 12656-1989

标准号：IS 12656-1989
发布日期：1989/12/1 12:00:00
实施日期：1999/12/31 12:00:00
适用范围：This International Standard specifies two methods for the determination of the behaviour of rubber or plastics hoses or tubing when bent to a specified radius.Method A is suitable for hoses and tubing of bore sizes up to about 80 mm; the size of the apparatus for testing hoses and tubing of larger bore sizes becomes excessive. The method also provides a means of measuring the force required to reach a specified bend radius, and the test may be carried out at a specified internal pressure.In method B, the bending characteristics, including the force required for bending, may be determined over a range of temperatures from -60 °C to +200 °C. The nature of the ap-paratus, however, limits its applicability to hoses and tubing of small bore sizes, i.e. up to about 12,5 mm.