Mr. Shashi Kumar ji,
I wud like to answer to your question, it is true that there is no express provision in Cr.P.C. to issue NBW's, but you can see the attached judgment of of Supreme Court, wherein the guidelines were framed that as to under what circumstances the trial court can issue NBW's.
The first instance when this issue came up before Supreme Court, the relevant para be read as under:-
State of U.P. v. Poosu and Anr. MANU/SC/0191/1976 : 1976CriLJ1373 at para 13 page 5, the Court observed:
Whether in the circumstances of the case, the attendance of the accused respondent can be best secured by issuing a bailable warrant or non-bailable warrant, is a matter which rests entirely in the discretion of the court. Although, the discretion is exercised judiciously, it is not possible to computerize and reduce into immutable formulae the diverse considerations on the basis of which this discretion is exercised. Broadly speaking, the court would take into account the various factors such as the nature and seriousness of the offence, the character of the evidence, circumstances peculiar to the accused, possibility of his absconding, larger interest of the public and the State.
However I wud say that, this discussion is not related to the above mentioned query involved herein.Therefore discussion should be confined only upto query involved for discussion.
Thanks