no as per section 24 of CGST ACT 2017 u have to take the regsitration irrespective of your turnover value and u cant claim exemption limit of rs 20 lacs if u r making an inter state supply as per section 7 of igst act 2017
corrections from the above the answer is sale point of view. correct answer is u can make inter state purchases without GST registration but u cant claim the input credit of the purchases