IS 3419-1989

标准号：IS 3419-1989
发布日期：1989/12/1 12:00:00
实施日期：1999/12/31 12:00:00
适用范围：1.1 This standard specifies the requirements and methods of test for rigid conduit fittings manu-factured from insulating materials for use with circular, rigid, non-flame propagating and non-threadable plain conduits of insulating materials.1.1.1 This standard covers conduit fittings suitable for temperature between — 5℃ and+60℃.Note — Non-metallic conduit fitting complying with this standard will be suitable for use at tempera-tures below —5°C subject to a reduction in mechanical strength.1.1.2 Only plain type fittings are covered in this standard.1.2 The fittings covered by this standard are:a) Couplers,b) Bends,c) Elbows,d) Tees,e) Inspection sleeves, andf) Boxes.