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Reg. 345

Condition of Pipes

a) All pipes shall be commercially straight free from longitudinal seaming, grooving, blistering or other injuries surface marks. The ends of the pipes shall be cut square.
b)

The pipes shall be made within the limits of tolerances given below:-

Class Tolerance on
Outside diameter Nominal thickness
Upto and including
51 mm. (2”)
Over 51 mm
(2”)
 
Seamless
E.R.W.
+ 0.4 mm.
(1/64”)
- 0.8 mm.
(1/32”)
± 1% + no limitation

- 12.5%
Butt welded ± 1% ± 1% + no limitation
- 12.5%

 

 
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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