Geological Drilling Pipe HQ Drill Rod & NQ Core Rod for Geological Survey and Mining Projects
Geological drill pipe
Geological drill pipe, also known as seamless steel pipe for geological drilling, is a seamless steel pipe used in geological core drilling. It constitutes a key part of the drilling equipment—the drill string—and its function is to connect the surface drilling rig to the drill bit underground, transmit torque, transport drilling fluid (mud or water), and continuously deepen the borehole to obtain core samples.
Geological drill pipes are typically made of high-quality alloy structural steels such as: Materials: 45MnMoB/30CrMoA/4130/30CrMnSiA, etc.
Parameter
Geological Drill Pipe
Pipe Body Material
45MnMoB/30CrMoA/4130/40Cr / 42CrMo / 35CrMo
Yield strength(Mpa)
850
Tensile Strength (Mpa)
1050
Length
1.5m – 3m (customized)
Thread
Threaded (male/female) or friction-welded joint
Hardness(HRC)
Surface hardness reach 31-35HRC;
Heat treatment
high-frequency hardening to guarantee perfect match between strength and toughness.
