Hi Manish,
Thanks for the support.I did simple modify in coding.Now I got the output in the correct order.If i follow the step of it_tab-tdline = t_mara-matnr, it is storing in the column B as you mentioned.But it was displayed in the second line.So i did adjust your below coding.Finally got the solution.Thanks manish 
DATA wa_line LIKE LINE OF t_line.
LOOP AT t_line INTO wa_line.
it_tab-tdformat = wa_line-tdformat.
it_tab-tdline = wa_line-tdline.
it_tab-matnr = IT_TAB-matnr.
APPEND it_tab.
ENDLOOP.
Regards,
Kavi