The joints of the non-dig integral forged drill pipe produced in Double Horse are all designed into double-shoulder structure which could enhance the seal of the joints and thus the mud pump pressure will not leak out during drilling. At the mean time, it could reduce the resistance of orienting and pullback force, which improves the anti-torque strength and prevents the box joint from deforming into bell mouth.

Thread form and the length of drill pipe can be manufactured in accordance with user requirements.