Design of gas cylinders

[arcpro]

Gas cylinders for containing nitrogen / ammonia and other gases are normally made seamless.
How are they designed as per ASME? Also please share their fabrication technique.

[mechcolor]

Seamless pressure vessels as per ASME are dealt in UF section. For design just go thru UF-12 & UF-13.
Formulas applicable for design thickness of shell and head would stay the same as mentioned in UG section.
Follow the link to have an understanding of fabrication technique, http://www.forging.org/facts/faq9.cfm#4.

[arcpro]

Thanks.
How the head is formed as an integral part of the shell?