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Reg. 344
MATERIAL


Steel Pipes

a) The pipes shall be made from steel made by an Open Hearth or Electric Process or by any of the Oxygen Processes. Hot finished seamless pipes may, however, be made of Bessemer Steel. Bessemer Steel shall not be used for pressures exceeding 21 kg/cm² (300 lbs./in²) or temperatures exceeding 260°C (500°F). If the Bessemer Process is used, the steel shall be made by a manufacturer approved by the Inspecting Authority.

When used for temperatures exceeding 399°C (750°F) the steel shall be of non-segregated or fully skilled type.
b)

Carbon and alloy steel pipes shall not be used for design temperatures exceeding those given in Table2 of regulation 349.

c) For design temperature over 427 °C (800 °F) special precaution shall be taken to ensure that the surface condition of the pipe is suitable for these requirements.
d) The material from which seamless and electric resistance welded pipes are made shall conform to the appropriate specification of tubes in Chapter II. The materials from which butt welded pipes are to be made shall conform to the requirements of Table 1 under Regulation 347.
e) Notwithstanding anything contained in sub-regulation (a), the material specifications given in this Chapter shall not apply to steam-pipes and fittings used for conveying steam at a pressure not exceeding 1 kg/cm², the approval in regard to the quality of the material being left to the discretion of the Chief Inspector of Boilers.
 
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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