... production exactly carries on the SY/T5146-1997 standard The HWDP's uses AISI 4145H alloy structural steel, the technique of ... production exactly carries on the SY/T5146-1997 standard, HWDP is one kind of medium weight and the drill pipe ...
... properties conform to API Spec 7 latest edition.Our integral HWDP can easily solve problems arising in vertical holes in soft ... and from locations5). Helpful for keep direction of directional well.HWDP's wear resistance hardbanding is standard on tool joints connections ...
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