Whenever tubulars are to be supplied with sockets, the dimensions of sockets shall be as given in Table 6. Tapping of sockets shall be done from one end only
Notes
1 The socket lengths shown in Table 6 meet the requirements of ISO/R 50, but the minimum length has been increased to allow for the chamfer at the ends of the socket and is based on:
where
length of useful thread of pipe (see IS 554); and
pitch of thread.
2 For minimum length of faced sockets (see Table 3).