标准号:IS 3989-1984
发布日期:1985/11/1 12:00:00
实施日期:1999/12/31 12:00:00
适用范围:1.1 This standard covers requirements for centrifugally cast ( spun ) iron spigot and socket soil, waste and ventilating pipes together with the details of the fittings and accessories. These pipes and fittings are suitable for use above ground only.1.2 The fittings and accessories covered in this standard are normally manufactured by sand casting method.