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By certification 
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.
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.