Products Description

Threaded Drill Rod, also known as threaded drill pipe, is a core transmission and connection component for foundation engineering drilling equipment.
Widely applied to rotary drilling rigs, DTH drilling rigs, and core drilling machines, it is responsible for transmitting torque and drilling pressure, and connecting drill bits and drilling tools in deep foundation drilling.
As a key part of the drilling system, it features high strength, good toughness, and reliable thread connection, ensuring stable drilling operation and efficient hole forming in complex strata.

Specification

Item	Specification
Product Name	Threaded Drill Rod / Threaded Drill Pipe
Thread Type	API standard thread, metric thread (customizable)
Material	45# steel, 42CrMo alloy steel (heat-treated)
Outer Diameter	50-159mm (varies by drilling depth and rig model)
Length	1m, 2m, 3m (standard); custom length available
Hardness	HRC 28-32 (rod body); HRC 35-40 (thread part)
Tensile Strength	≥800 MPa
Connection Method	Threaded connection (male-female thread matching)

Product Features & Advantages

High strength and toughness: High-quality alloy steel material and quenching-tempering heat treatment ensure excellent tensile and bending strength, resisting deformation and fracture under heavy torque.
Reliable thread connection: Precision-processed threads with good fit and wear resistance, ensuring tight connection without loosening during high-speed rotation.
Corrosion and wear resistance: Surface anti-rust treatment (galvanizing, spraying) and thread hardening process extend service life in humid and abrasive strata.
Easy assembly and disassembly: Standard thread design enables quick connection and separation of drill rods, reducing drilling downtime and improving work efficiency.
Strong load-bearing capacity: Optimized rod body structure distributes torque and pressure evenly, adapting to deep drilling and complex stratum conditions.
Wide compatibility: Complies with API and international standards, matching most mainstream drilling rigs and drill bits, with strong versatility.

Application Scenarios

Pile foundation drilling: Deep hole forming for cast-in-place piles in high-rise buildings, bridges, and high-speed railways, transmitting torque and drilling pressure.
DTH drilling projects: Drilling for water wells, mining blast holes, and anchoring holes in hard rock strata, connecting DTH hammers and drill bits.
Core drilling: Geological exploration and mineral prospecting, transmitting power and collecting core samples in deep strata.
Special foundation works: Drilling for diaphragm walls, secant piles, and foundation pit support in complex strata (sand, rock, cobbles).

Product Specification

Diameter outside	Wall thickness	Length	Thread for pipe male	Thread for pipe female	Spanner Flat	Internal Spline	Tool joint length Pin	Tool joint length Box	Weight
mm	mm	mm	Pin	Box			mm	mm	kg
76	4	3000	API 2 3/8" Reg	API 2 3/8" Reg	Y	N	107	165	24
76	4	3000	API 2 3/8" Reg	API 2 3/8" Reg	N	N	190	190	31
76	6.3	3048	API 2 3/8" Reg	API 2 3/8" Reg	Y	N	190	260	39
76	6.3	4000	API 2 3/8" Reg	API 2 3/8" Reg	N	N	190	190	46
76	6.3	5000	API 2 3/8" Reg	API 2 3/8" Reg	N	N	350	350	65
76	6.3	5000	API 2 3/8" Reg	API 2 3/8" Reg	N	N	190	190	58
79	6.3	1524	CUBEX #21	CUBEX #21	Y	Y	110	190	21
79	6.3	1829	CUBEX #21	CUBEX #21	Y	Y	110	190	26
89	4	1800	API 2 3/8" Reg	API 2 3/8" Reg	Y	N	107	158	20
89	4	3000	API 2 3/8" Reg	API 2 3/8" Reg	Y	N	107	158	30
89	4	4000	API 2 3/8" Reg	API 2 3/8" Reg	N	N	190	190	46
89	4	4500	API 2 3/8" Reg	API 2 3/8" Reg	Y	N	107	158	45
89	6.3	1500	API 2 3/8" Reg	API 2 3/8" Reg	Y	N	107	158	24
89	6.3	1800	API 2 3/8" Reg	API 2 3/8" Reg	N	N	300	300	31
89	6.3	1829	CUBEX #21	CUBEX #21	Y	Y	110	200	28
89	6.3	1829	CUBEX #24	CUBEX #24	Y	Y	110	200	29
89	6.3	3000	API 2 3/8" Reg	API 2 3/8" Reg	Y	N	107	158	43
89	6.3	5000	API 2 3/8" Reg	API 2 3/8" Reg	N	N	190	190	76
89	6.3	5000	API 2 3/8" Reg	API 2 3/8" Reg	N	N	350	350	82
89	6.3	6000	API 2 3/8" Reg	API 2 3/8" Reg	N	N	350	350	95
89	6.3	7500	API 2 3/8" Reg	API 2 3/8" Reg	N	N	350	350	114
89	8.8	5000	API 2 3/8" Reg	API 2 3/8" Reg	N	N	350	350	90
89	8.8	6000	API 2 3/8" Reg	API 2 3/8" Reg	N	N	350	350	112
89	8.8	6000	API 2 3/8" Reg	API 2 3/8" Reg	N	N	270	270	112
89	12	6096	CUBEX #24	CUBEX #24	N	N	280	280	150
102	6.3	1524	CUBEX #24	CUBEX #24	Y	Y	150	220	32
102	6.3	1828	CUBEX #24	CUBEX #24	Y	Y	150	220	41
102	6.3	4000	API 2 7/8" Reg	API 2 7/8" Reg	N	N	270	270	74
102	6.3	5000	API 2 7/8" Reg	API 2 7/8" Reg	N	N	270	270	89
102	6.3	5000	API 2 7/8" Reg	API 2 7/8" Reg	N	N	350	350	98
102	6.3	5000	API 2 7/8" Reg	API 2 7/8" Reg	N	N	270	270	85
102	6.3	6000	API 2 7/8" Reg	API 2 7/8" Reg	N	N	270	270	94
102	6.3	6000	API 2 7/8" Reg	API 2 7/8" Reg	N	N	350	350	112
102	6.3	7500	API 2 7/8" Reg	API 2 7/8" Reg	N	N	350	350	136
102	8.8	6100	3 1/8" DIBH	3 1/8" DIBH	Y	Y	150	220	132
102	8.8	9144	API 2 7/8" Reg	API 2 7/8" Reg	Y	N	340	315	200
102	12	6096	CUBEX #24	CUBEX #24	N	N	280	280	180
114	6.3	1196	CUBEX #28	CUBEX #28	Y	Y	130	220	30
114	6.3	3000	API 3 1/2" Reg	API 3 1/2" Reg	Y	N	140	185	60
114	6.3	5000	API 3 1/2" Reg	API 3 1/2" Reg	N	N	350	350	115
114	6.3	5000	API 3 1/2" Reg	API 3 1/2" Reg	N	N	190	260	93
114	6.3	6000	API 3 1/2" Reg	API 3 1/2" Reg	N	N	350	350	132
114	6.3	6000	API 3 1/2" Reg	API 3 1/2" Reg	N	N	270	260	120
114	6.3	7500	API 3 1/2" Reg	API 3 1/2" Reg	N	N	350	350	156
114	8.8	6000	API 3 1/2" Reg	API 3 1/2" Reg	N	N	270	260	156
114	8.8	7500	API 3 1/2" Reg	API 3 1/2" Reg	N	N	350	350	201
114	8.8	7620	API 3 1/2" Reg	API 3 1/2" Reg	Y	N	310	300	187
114	8.8	9144	API 3 1/2" Reg	API 3 1/2" Reg	Y	N	490	225	230
114	8.8	9144	API 3 1/2" Reg	API 3 1/2" Reg	Y	N	310	300	222
114	12	1219	API 3 1/2" Reg	API 3 1/2" Reg	Y	N	490	350	58
114	12	2400	API 3 1/2" Reg	API 3 1/2" Reg	Y	N	490	350	95
114	12	3000	API 3 1/2" Reg	API 3 1/2" Reg	Y	N	490	362	116
114	12	9144	API 3 1/2" Reg	API 3 1/2" Reg	Y	N	490	225	305
114	12	9144	API 3 1/2" Reg	API 3 1/2" Reg	Y	N	490	362	310
114	12	9144	BECO 3"	BECO 3"	Y	N	490	225	308
114	12	9144	BECO 3"	BECO 3"	Y	N	310	300	303
114	12.5	7620	API 3 1/2" Reg	API 3 1/2" Reg	Y	N	490	225	231
127	6.3	1524	CUBEX #28	CUBEX #28	Y	Y	170	260	47
127	6.3	6000	API 3 1/2" Reg	API 3 1/2" Reg	N	N	350	350	154
127	6.3	7500	API 3 1/2" Reg	API 3 1/2" Reg	N	N	350	350	181
127	8.8	1829	CUBEX #28	CUBEX #28	Y	Y	130	220	65
127	8.8	6096	CUBEX #28	CUBEX #28	N	N	280	280	183
127	8.8	7500	API 3 1/2" Reg	API 3 1/2" Reg	N	N	350	350	228
127	10	1524	CUBEX #28	CUBEX #28	Y	Y	170	260	62
127	12	6096	API 3 1/2" Reg	API 3 1/2" Reg	N	N	280	280	239
127	12	6096	BECO 3 1/2"	BECO 3 1/2"	N	N	280	280	239
127	12	8077	BECO 3 1/2"	BECO 3 1/2"	Y	N	315	315	310
127	12	9144	BECO 3 1/2"	BECO 3 1/2"	Y	N	315	315	353
140	8.8	7500	API 4 1/2" Reg	API 4 1/2" Reg	N	N	350	350	257

Our Service

At KAT Drilling Tools, we deliver customer-centric solutions for mining, construction, exploration, and oil & gas sectors-covering the full drill tool lifecycle.

Customized Design & Manufacturing

Bespoke drill bits/rods tailored to your drilling conditions, compliant with API/ISO standards. Rapid prototyping and batch production available.

Quality Control & Testing

Rigorous raw material, in-process, and final performance inspections. Detailed quality reports for every batch.

Technical Consultation & Support

Expert advice on tool selection, on-site training, and real-time troubleshooting to minimize downtime.

After-Sales Maintenance & Repair

Cost-effective maintenance, professional repair, and fast spare parts supply to extend tool lifespan.

Logistics & Supply Chain

Flexible delivery (bulk/JIT/emergency), secure packaging, and full customs/documentation support for global trade.

Long-Term Partnership

Customized service packages, dedicated account management, and continuous optimization based on your feedback.

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Threaded Drill Pipe