Derun provides all type of drill pipes, include oil drill pipe, water well geothermal well drill pipe, coalbed methane shale gas drill pipe and flush joint drill pipe, also various kind of tool joints. Description and specification Size full range from 2-3/8 inch to 6-5/8inch Grade e75 x95 g105 and s135 Upset type eu iu and ieu. Connection from nc26 to nc50 5-1/2fh and 6-5/8fh Standard api spec 5dp api spec 7-2 api rp 7g.
