The cylinder shall be of welded construction having a cold or hot drawn cylindrical portion with hemispherical, ellipsoidal or tori spherical ends welded to it or two halves of cold or hot drawn and cecum frenetically welded together or any other construction approved the statutory authority.
The calculation of the thickness of pressure parts of the
gas cylinder is related to the minimum value of yield strength guaranteed by
the cylinder manufacture for the finished cylinder and the test pressure. (see
IS 3196, IS 4576 , IS 7142, IS 7312, IS 8198)
The agreed finished thickness shall not be lower than that calculated from the following formulae :
For cylindrical portion
For Semi-Ellipsoidal End
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