Machinery & Equipment
Description
drill collar,slick drill collars, spiral drill collars, non-magnetic drill collars,API drill collar,API 7-1 drill collar,NS-1 drill collar,4145H drill collar,Spiral Drill Collar With Elevator Groove And Slip Groove;
Drill Collar is mainly used to provide bit weight to drill bit so that drill pipe is in tension. Especially drill collar can keep drill bit centralized and hole track by large rigidity. TIANHE brand drill collars are manufactured strictly from API Spec7-1 and SY5411 standard.
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square kelly...
TianHe Oil Group HuiFeng petroleum equipments Co.,Ltd
Drill Collar (DC),Drill pipe (DP),Heavy weight drill pipe(HWDP),square kelly,hexagonal kelly,stabilizer,Hole opener, Roller reamer, Casing scraper, Internal Casing Cutter,External
Address: No.43, West Diming Street, ,
Mudanjiang City, Heilongjiang Province
China, 157011
Tel: 0086-453-5979983
Fax: 0086-453-6531608