Consistent Concentricity Carbide Drill Rod / Tapered Thread Extension Rod For Coal Mining

HDD drill pipe is a specialized tool designed for transferring torque and tension during directional drilling operations in coal mining applications. Engineered to withstand extreme operational stresses including torsion, tension, bending, friction, and vibration, these drill rods meet the most demanding performance requirements.

Manufactured from premium alloy structural steel sourced from Baogang Steel, each rod undergoes rigorous processing including upsetting, comprehensive heat treatment, and precision friction welding. Our quality assurance process includes extensive testing of hardness, metallurgical structure, and physical properties before final plating and packaging.

• High quality steel tube construction
• Thru-wall heat treated tube body for enhanced durability
• Precision-engineered for consistent concentricity and straightness
• Specialized tapered thread design for secure connections

Jinzhou Shitan Machinery Equipment Co., Ltd. Main Products：

Pneumatic Drilling Rig / Air Drilling Rig（ST-180,ST-200,ST-260,ST-300,ST-350,ST-400,ST450,ST-450,ST-500, ST-600,ST-800 and other Pneumatic water well drilling Rigs.）, Crawler Water Well Drilling Rig / Trailer Mounted Drilling Rig / Water Well Drilling Rig / Hydraulic Borewell Machine / Hard Rock Drilling Equipment / Diamond Core Drill Rig / Geological Drilling Rig / Soil Testing Drilling Rig / Portable Water Well Drilling Rig（ST-30，ST-50，XY-1A, XY-1B, XY-2, XY-2B,GK180, GK200, GY150, GY200 and 30 impact drill rig,ZLJ series tunnel drilling rig and other geological drilling machines）Crawler Track Undercarriage, Drilling Mud Pump（BW150,BW160,BW200,BW250,BW850 series Drilling mud pumps）, Drilling Air Compressor, Water Well Drill Bits（PDC Drill Bit， Tricone Bit， DTH Button Bit）, Water Well Drill Pipe, Drilling Rig Spare Parts( drilling rods , drilling rods joint , casing pipe, casing coupling, core tube, core tube coupling, lifters, automatic drop hammer, sampler, SPT tool, wrench fork, pad fork, lock joint), Track Transporter

Good quality, professional after-sales service, welcome to order