The name, code, and parameters of the header
Groove shape of head and method of representation
Note (1), means: VO= outer groove, VI= inner groove, I= flat groove, F= residual size, R= blunt edge size.
(2) The groove shape of the standard stock mouth is: the groove of Di≤500 is VO; When Di>500, the groove is L;
(3) Groove shapes other than the above can also be processed, please inquire individually