ICS 77 140 75                          MTD 19

Reaffirmed 2019

1. Scope

1.1 This standard ( Part I ) covers the requirements for welded and seamless plain end or screwed and socketed steel tubes intended for use for water, non-hazardous gas, air and steam. This standard is applicable to tubes of size 6 mm nominal bore to 150 mm nominal bore.

1.2 Medium and heavy tubes only are recommended for canying steam services. The maximum permissible pressure and temperatures for different sizes of tubes arc given in Annex A for guidance only.