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Reg. 354

Screwed on Flanges

Where flanges are secured by screwing the screw thread on the pipes and in the flanges shall be arranged to end at a point just inside the back of boss of the flange. After the flange has been screwed on, the pipe shall be expanded into the flange by a roller expander. Such screwed and expanded flanges may be used for steam for a maximum working pressure of 31.5 kg/cm² (450 lbs./sq. in) and a maximum temperature of 399°C (750°F) and for feed for a maximum pressure of 42 kg/cm² (600 lbs./sq. in.).
 
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Message from Chairman of Central Boilers Board About Central Boiler Board History of Indian Boiler Regulations Foreword Contents Chapter Wise Contents Regulation Wise List of Amendments
Indian Boilers Act 1923 Ibr Forms Home Search Help Contact Us