Message from
Chairman of Central Boilers Board


About Central Boilers
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

Reg. 347 F

STEAM-PIPES AND FITTINGS

Test for valves and fittings:- As per requirement of clause (e) of regulations 290.

TABLE 1-CARBON STEELS

Kind of pipes Butt welded pipes  
Minimum elongation per cent
Sulphur per cent. max. Phosphorous per cent max.
Ultimate tensile strength in kg./sq. mm (tons per sq. in.) On 203 mm. (8 in.) On 51 mm. (2 in.)
Not less than Not more than 6 mm. (1/4") thick and over less than 6 mm. (1/4") thick 6mm. (1/4") thick and over
Less than 6 mm. (1/4") thick  
Strips cut from the pipes clear of the welds and tested in their curved condition 35
(22)
44
(28)
20 18 32 30 0.6 0.6
Test lengths taken from finished pipes (ends of pipes to be plugged for grips) 35
(22)
44
(28)
25 23 - -


TABLE 1 - CARBON STEELS
Selected Samples cut transversely Ultimate tensile stress in kg./sq. mm.(tons/sq. in.) Min. Elongation per cent on 203 mm. (8") Sulphur maximum % Phosphorus maximum %
Not Less Than Not
More
Than
13 mm. 1/2" thick and over Less than 13 mm. thick and not less than 6mm. (1/4") thick Less than 6m. thick
  36
(23)
44
(28)
23 20 18 0.05 0.05

 

 
Back   Top
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