StableMax is specialized in manufacturing drill collars,drill pipes from china.As a professional drill collars/pipes manufacturer,we have manufacured drill stabilizers,drill collars and drill pipes for nearly ten years.The drill stabilizers we manufacure are integral spiral blade stabilizer,sleeve stabilizer,integral straight rib Stabilizer and the drill collars we manufacture are spiral/slick drill collars and non mangnetic drill collars,square/hexagonal kellys and drill pipes like heavy weight drill pipes.

>  Drill Stabilizers:Integral spiral blade stabilizers are manufactured from single bars of AISI 4145H modified steel.Professional forging process guarantee that mechanical properties meet API Spec 7-1.Hardness range of 285-341HB and a charpy V notch impact value of 54 joules are guaranteed one inch below the surface.Also sleeve stabilizer,straight rib stabilizer,welded blade and non magnetic stabilizers. > Spiral/Non Magnetic Drill Collars: Spiral Slick and Non Magnetic Drill collars are manufactured from 4145H modified steel.Non Mangetic Drill collars are bored and drifted to API Spec7-1 and fully heated to meet or exceed the mechanical property requirements of API Spec-7.Hardness range of 285-341HB and a charpy V notch impact value of 54joules are guaranteed one inch below the surface. > Heavy Weight Drill Pipes:Heavy Weight Drill Pipes we manufacture are all made of AISI 4145H alloy steel.And we manage the production and inspection process strictly conformed to API SPEC 7.And Heavy weight drill pipes have been proved by oilfields all over the world.The heavy weight drill pipes we manufacture can last more than 600 hours with no thread gluing and no fracture.We also manufacture normal drill pipes.

contact us for more details in drill pipes,drill collars,heavy weight drill pipe,spiral/ slick drill collars,Stabilizer,Square/hexagonal kellys