Drilling Tool LUHAI 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 & Specification: Size: full range from 2-3/8”to 6-5/8” 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 SPEC7-1,API RP 7G.