... rod 1.T38,T45,T51 2.manufacture of series drill rod 3.professional technical team 4.ISO9001:2008 T45 MF rod ... length 3660 :Our company can offer many kinds of drill bits, including ... , rock cutting in quarrying.T38 extension drill rod,length from 1220mm,1525mm,1830mm,3660mm to 6095mm ... 6095mm.We can manufacture all kinds of bits and drill rod according to customer's special requirement. ...