This International Standard specifies the general dimensions of tube drawing mandrels with respect to their diameter d1.
it applies to brazed drawing mandrels and sleeved drawing mandrels.
The dimensions have been determined taking existing practice into account as far as possible.
Threads are given in both measurement systems (metric and in inches) so as to allow the use of these mandrels on any machine.
IS 11524-1986 history
1986IS 11524-1986 Specification for carbide mandrels for pipe drawing dies