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Water Well Geothermal

Water Well/Geothermal

Air/Mud Rotary Drill Pipe

DPI's Drill Pipe is manufactured from premium-quality USA Steel. We utilize precision manufacturing techniques, coupled with our experience and expertise, to deliver you the Industry's Best Drill Pipe. We take pride in each string of Drill Pipe, and offer our recommendations in the Drill Pipe's characteristics that match your application.

We utilize advanced Inertia Welding Technology, producing the strongest bond from tubing to tool joint that is available. We utilize our CNC machining centers to craft the tool joints, and our Heat Treating Enhancement Technology to maximize durability, strength, and wear life to the Pipe. The Drill Pipe is available in Flush Joint, Upset Joint, and Upset Tube Designs.

DPI has the capability of manufacturing Drill Pipe in a wide range of configurations as all aspects of the manufacturing process are accomplished at our facility - This allows us to satisfy your configuration requirements, even if considered unusual.

Upset Tube Designs are available in Internal Upset (IU), External Upset (EU), and Internal External Upset (IEU).

Reference our Recommended Thread Profile - Wall, and Grade Chart to view our range of alternatives, or just give us a call to discuss your specific requirements.

Our Drill Pipe comes in all Grades; Grade "D", "E", "X", "G", "S". Our Tool Joints are manufactured to API Standards.

Break-Out Flats and/or Break-Out Lugs are offered in many different configurations, from OEM to custom design.

API Drill Pipe Range

Pipe OD Wall Thickness Lengths Threads
2 3/8" .190, .254, .280 2'-30' 2IF, 2 3/8 Mayhew Junior, 2 3/8 Mayhew Regular,
2 3/8IF
2 7/8" .217, .276, .362 2'-30' NWJ, 2 3/8 Mayhew Junior, 2 3/8 Mayhew Regular,
2 3/8IF, 2 7/8IF
3" .156, .188, .250, .375 2'-30' 2 3/8 Mayhew Junior, 2 3/8 FEDP,
2 3/8 API RegularĀ 
3 1/2" .219, .250, .368, .449 2'-30' 2 3/8 API Regular,
2 7/8 API Regular,
2 3/8IF
4" .226, .262, .330, .380 2'-45' 2 7/8 Reg, 2 7/8IF,
3 1/2 Regular
4 1/2" .250, .290, .337, .430 2'-45' 2 7/8IF, 3 1/2 Regular, 3 1/2IF,
4 1/2 XH, 4 1/2IF
4 3/4" .375 2'-20' 3 1/2IF
5" .362, .476 2'-45' 3 1/2 Regular,
3 1/2IF
5 1/2" .361, .415 2'-45' 3 1/2IF, 4FH, 4IF,
4 1/2 Regular
6" .250, .313,.375 2'-20' 4 1/2 Reg, 4IF
6 5/8" .288, .352, .417 2'-45' 4 1/2IF, 8 FF
7" .362, .417, .453, .498 2'-45' 4 1/2IF, 8 1/2FF
7 5/8" .375, .500 2'-45' 5 1/2 FH, 8 1/2FF

Rotary Connection Chart

Thread Profiles Recommended OD Recommended ID
2 IF 2.375" 1.000"
2 3/8 Mayhew Junior 2.750" 1.500"
2 3/8 FEDP 3.000" 1.500"
2 3/8 API Regular 3.000" 1.000"
2 3/8 Mayhew Regular 3.250" 1.625"
2 3/8 IF 3.375" 1.750"
2 3/8 American Open Hole 3.500" 1.813"
2 3/8 AOH Mod 3.500" 2.063"
2 7/8 API Regular 3.500" 1.250"
2 7/8 FEDP 3.750" 1.750"
2 7/8 Mayhew Full Hole 3.875" 1.875"
2 7/8 IF 4.125" 2.125"
3 1/2 API Regular 4.250" 1.750"
3 1/2 Full Hole 4.625" 2.438"
3 1/2 IF 4.750" 2.688"
3 1/2 XH 4.750" 2.438"
4 Full Hole 5.250" 2.813"
4 IF 5.750" 3.250"
4 1/2 API Regular 5.500" 2.250"
4 1/2 IF 6.126" 3.750"
6 5/8 API Regular 7.750" 3.500"
5 1/2 IF 7.375" 4.813"
6 5/8 Full Hole 8.000" 5.000"
8 1/2 Full Flow 8.500" 5.500"
7 5/8 API Regular 8.875" 4.000"
8 5/8 API Regular 10.000" 4.750"

Advise us on your typical application, and we can recommend Wall and Grade to match your needs.

Mid Body Steel Alternatives

Grade Min Yield Min Tensile
D-65 65,000 PSI 95,000 PSI
E-75 75,000 PSI 100,000 PSI
X-95 95,000 PSI 105,000 PSI
G-105 105,000 PSI 115,000 PSI
S-135 135,000 PSI 145,000 PSI

 

External Upset

External Upset

Internal Upset

Internal Upset

Internal-External Upset

Internal-External Upset


Upset Drill Pipe Chart

        Calculated Weight Upset Dimensions, in.  
Pipe size: Outside Nominal Wall Thickness, Inside Diameter, Plain end Upset Outside Diameter Inside Diameter t End of pipe Length of Internal Upset Length of Internal Taper, Length of External Upset, Length of External Taper Length End of Pipe to Taper Fadeout,
Dai. in. Wt: lb/ft in. in. lb/ft lb +1/8. 1/32 ± 1/16 +1 1/2 - 1/2 min. min. min. max. max.
D   t d Wpe ew Dou dou Liu Miu Leu Meu Leu + Meu
                           
Internal-Upset Drill Pipe
2 7/8 10.40 0.362 2.151 9.72 3.20 2.875 1 5/16 1 3/4 1 1/2        
3 1/2 9.50 0.254 2.992 8.81 4.40 3.500 2 1/4 1 3/4          
3 1/2 13.30 0.368 2.764 12.31 4.40 3.500 1 15/16 1 3/4 1 1/2        
3 1/2 15.50 0.449 2.602 14.63 3.40 3.500 1 15/16 1 3/4 1 1/2        
*4 11.85 0.262 3.476 10.46 4.20 4.000 2 15/16 1 3/4          
4 14.00 0.330 3.340 12.93 4.60 4.000 2 3/4 1 3/4 2        
*4 1/2 13.75 0.271 3.958 12.24 5.20 4.500 3 3/8 1 3/4          
*5 16.25 0.296 4.408 14.87 6.60 5.000 3 3/4 1 3/4          
External-Upset Drill Pipe
2 3/8 6.65 0.280 1.815 6.26 1.80 2.656 1.815     1.5 1.5   4
2 7/8 10.40 0.362 2.151 9.72 2.4 3.219 2.151     1.5 1.5   4
3 1/2 9.50 0.254 2.992 8.81 2.60 3.824 2.992     1.5 1.5   4
3 1/2 13.30 0.368 2.764 12.31 4.00 3.824 2.602 2 1/4 2 1.5 1.5   4
3 1/2 15.50 0.449 2.602 14.63 2.80 3.824 2.602     1.5 1.5   4
*4 11.85 0.262 3.476 10.46 5.00 4.500 3.476     1.5 1.5   4
4 14.00 0.330 3.340 12.93 5.00 4.500 3.340     1.5 1.5   4
*4 1/2 13.75 0.271 3.958 12.24 5.60 5.000 3.958     1.5 1.5   4
4 1/2 16.60 0.337 3.826 14.98 5.0 5.000 3.826     1.5 1.5   4
4 1/2 20.00 0.430 3.640 18.69 5.60 5.000 3.640     1.5 1.5   4
Internal-External-Upset Drill Pipe
4 1/2 16.60 0.337 3.826 14.98 8.10 4.656 3 5/32 2 1/2   1 1/2 1 1 1/2  
4 1/2 20.00 0.430 3.640 18.69 8.60 4.781 3 2 1/4 2 1 1/2 1 1 1/2  
5 19.50 0.362 4.276 17.93 8.60 5.188 3 11/16 2 1/4 2 1 1/2 1 1 1/2  
5 25.60 0.500 4.000 24.03 7.80 5.188 3 7/16 2 1/4 2 1 1/2 1 1 1/2  
5 1/2 21.90 0.361 4.778 19.81 10.60 5.563 4 2 1/4 2 1 1/2 1 1 1/2  
5 1/2 24.70 0.415 4.670 22.54 9.00 5.563 4 2 1/4 2 1 1/2 1 1 1/2  

Yield and Tensile Chart

Grade Min Yield Min Tensile
E-75 75,000 PSI 100,000 PSI
X-95 95,000 PSI 105,000 PSI
G-105 105,000 PSI 115,000 PSI
S-135 135,000 PSI 145,000 PSI

DPI manufactures virtually all configurations of rotary drill pipe. A few examples are below.

Drill Pipe

Flush OD break out flats box end

Drill Pipe

Elevator shoulders box end with break out flats

Drill Pipe

Break out flats box end

Drill Pipe

Break out flats pin & box end