About Us
Eastern Steel Manufacturing Co.,Ltd is a leading manufacturer and distributor of seamless steel pipe, welded steel pipe, OCTG products and fittings. We supply first-step processing, semi-finished parts and finished parts to help our clients meet fabrication requirements beyond their capacity or to improve operations by moving forward the pre-production processing.
News
In this column you can find the steel pipe related articles you need, including industry trends, product standards and materials, and some technical guidelines.
Services
Eastern Steel Manufacturing Co.,Ltd not only improve product production and sales services, but also provide additional value-added services. As long as you need, we can complete your specific needs together.
Facility
Eastern Steel Manufacturing Co.,Ltd not only improve product production and sales services, but also provide additional value-added services. As long as you need, we can complete your specific needs together.
Projects
Many years of large-scale project experience in various fields（Oil & Gas, Construction, Power Energy, Marine & Offshore, Water Treatment, Exploration & Drilling Services, Pipeline & Petrochemical etc.）, professional project team is responsible from receiving until the end of the project.
2-7/8" drill pipe typically refers to drill pipe with an outer diameter of 2-7/8 inches. It is one of the commonly used small-to-medium diameter drill pipe specifications in oil, gas, and geological drilling operations, and the standard is usually API 5DP.
In the drilling industry, drill pipe sizes are conventionally expressed in inches. 2-7/8” is its nominal outer diameter. This size of drill pipe is often used in medium-deep wells or as a transition section between drill collars and larger diameter drill pipes.
Among commonly used drill pipe sizes, 2-7/8” is smaller than the more common 3-1/2” and 4-1/2”, but larger than 2-3/8” drill pipe, making it an important bridging size.
Mainstream 2-7/8″ drill pipes conform to the following standard:
API Spec 5DP (International Standard for Oil Drill Pipes)
Common Steel Grades: E-75 / X-95 / G-105 / S-135 / V-150
Connection Methods: Internal Flush (IU) / External Flush (EU)
2-7/8” drill pipes typically use either Internal Flush (IF) or Rectangular Glide (REG) threaded connections.
API Standard Name: NC31
Internal Flush type, with a thicker thread profile (4 threads per inch) and a smaller taper, suitable for applications requiring unobstructed internal flow.
Marking Method: 2-7/8 REG
2-7/8” drill pipe is mostly used in small-diameter wellbores, directional wells, or as a connection section for downhole tools such as drill collars and fishing tools.
|
Pipe Data |
Tool Joint |
|||||||||||
|
Size Outer D |
Nominal Weight |
Grade and Upset Type |
Torsional Yield Strength |
Tensile Yield Strength |
Wall Thickness |
Nominal ID |
Pipe Body Section |
Pipe Body Section Modulus |
Pipe Body Polar Section |
Internal Pressure |
Collapse Pressure |
Connection Type |
|
2 7/8 |
6.65 |
E-75 IU |
8,100 |
135,900 |
0.217 |
2.441 |
1.812 |
1.121 |
2.241 |
9,907 |
10,467 |
XT26 |
|
|
|
G-105 IU |
11,300 |
190,300 |
0.217 |
2.441 |
1.812 |
1.121 |
2.241 |
13,869 |
14,020 |
XT26 |
|
|
|
S-135 IU |
14,500 |
244,600 |
0.217 |
2.441 |
1.812 |
1.121 |
2.241 |
17,832 |
17,034 |
XT26 |
|
|
|
V-150 IU |
16,200 |
271,800 |
0.217 |
2.441 |
1.812 |
1.121 |
2.241 |
19,813 |
18,398 |
XT26 |
|
|
|
X-95 IU |
10,200 |
172,100 |
0.217 |
2.441 |
1.812 |
1.121 |
2.241 |
12,548 |
12,940 |
XT26 |
|
|
|
Z-140 IU |
15,100 |
253,700 |
0.217 |
2.441 |
1.812 |
1.121 |
2.241 |
18,492 |
17,500 |
XT26 |
|
2 7/8 |
6.85 |
E-75 EU |
8,100 |
135,900 |
0.217 |
2.441 |
1.812 |
1.121 |
2.241 |
9,907 |
10,467 |
NC31 |
|
|
|
|
8,100 |
135,900 |
0.217 |
2.441 |
1.812 |
1.121 |
2.241 |
9,907 |
10,467 |
HT31 |
|
|
|
|
8,100 |
135,900 |
0.217 |
2.441 |
1.812 |
1.121 |
2.241 |
9,907 |
10,467 |
XT31 |
|
|
|
E-75 IU |
8,100 |
135,900 |
0.217 |
2.441 |
1.812 |
1.121 |
2.241 |
9,907 |
10,467 |
NC26 |
|
|
|
|
8,100 |
135,900 |
0.217 |
2.441 |
1.812 |
1.121 |
2.241 |
9,907 |
10,467 |
HT26 |
|
|
|
G-105 EU |
11,300 |
190,300 |
0.217 |
2.441 |
1.812 |
1.121 |
2.241 |
13,869 |
14,020 |
NC31 |
|
|
|
|
11,300 |
190,300 |
0.217 |
2.441 |
1.812 |
1.121 |
2.241 |
13,869 |
14,020 |
HT31 |
|
|
|
|
11,300 |
190,300 |
0.217 |
2.441 |
1.812 |
1.121 |
2.241 |
13,869 |
14,020 |
XT31 |
|
|
|
G-105 IU |
11,300 |
190,300 |
0.217 |
2.441 |
1.812 |
1.121 |
2.241 |
13,869 |
14,020 |
NC26 |
|
|
|
|
11,300 |
190,300 |
0.217 |
2.441 |
1.812 |
1.121 |
2.241 |
13,869 |
14,020 |
HT26 |
|
|
|
S-135 EU |
14,500 |
244,600 |
0.217 |
2.441 |
1.812 |
1.121 |
2.241 |
17,832 |
17,034 |
NC31 |
|
|
|
|
14,500 |
244,600 |
0.217 |
2.441 |
1.812 |
1.121 |
2.241 |
17,832 |
17,034 |
HT31 |
|
|
|
|
14,500 |
244,600 |
0.217 |
2.441 |
1.812 |
1.121 |
2.241 |
17,832 |
17,034 |
XT31 |
|
|
|
S-135 IU |
14,500 |
244,600 |
0.217 |
2.441 |
1.812 |
1.121 |
2.241 |
17,832 |
17,034 |
NC26 |
|
|
|
|
14,500 |
244,600 |
0.217 |
2.441 |
1.812 |
1.121 |
2.241 |
17,832 |
17,034 |
HT26 |
|
|
|
V-150 EU |
16,200 |
271,800 |
0.217 |
2.441 |
1.812 |
1.121 |
2.241 |
19,813 |
18,398 |
HT31 |
|
|
|
|
16,200 |
271,800 |
0.217 |
2.441 |
1.812 |
1.121 |
2.241 |
19,813 |
18,398 |
XT31 |
|
|
|
V-150 IU |
16,200 |
271,800 |
0.217 |
2.441 |
1.812 |
1.121 |
2.241 |
19,813 |
18,398 |
HT26 |
|
|
|
X-95 EU |
10,200 |
172,100 |
0.217 |
2.441 |
1.812 |
1.121 |
2.241 |
12,548 |
12,940 |
NC31 |
|
|
|
|
10,200 |
172,100 |
0.217 |
2.441 |
1.812 |
1.121 |
2.241 |
12,548 |
12,940 |
HT31 |
|
|
|
|
10,200 |
172,100 |
0.217 |
2.441 |
1.812 |
1.121 |
2.241 |
12,548 |
12,940 |
XT31 |
|
|
|
X-95 IU |
10,200 |
172,100 |
0.217 |
2.441 |
1.812 |
1.121 |
2.241 |
12,548 |
12,940 |
NC26 |
|
|
|
|
10,200 |
172,100 |
0.217 |
2.441 |
1.812 |
1.121 |
2.241 |
12,548 |
12,940 |
HT26 |
|
|
|
Z-140 EU |
15,100 |
253,700 |
0.217 |
2.441 |
1.812 |
1.121 |
2.241 |
18,492 |
17,500 |
HT31 |
|
|
|
|
15,100 |
253,700 |
0.217 |
2.441 |
1.812 |
1.121 |
2.241 |
18,492 |
17,500 |
XT31 |
|
|
|
Z-140 IU |
15,100 |
253,700 |
0.217 |
2.441 |
1.812 |
1.121 |
2.241 |
18,492 |
17,500 |
HT26 |
|
2 7/8 |
10.40 |
E-75 EU |
11,600 |
214,300 |
0.362 |
2.151 |
2.858 |
1.602 |
3.204 |
16,526 |
16,509 |
NC31 |
|
|
|
|
11,600 |
214,300 |
0.362 |
2.151 |
2.858 |
1.602 |
3.204 |
16,526 |
16,509 |
NC26 |
|
|
|
|
11,600 |
214,300 |
0.362 |
2.151 |
2.858 |
1.602 |
3.204 |
16,526 |
16,509 |
SLH90 |
|
|
|
|
11,600 |
214,300 |
0.362 |
2.151 |
2.858 |
1.602 |
3.204 |
16,526 |
16,509 |
HT31 |
|
|
|
|
11,600 |
214,300 |
0.362 |
2.151 |
2.858 |
1.602 |
3.204 |
16,526 |
16,509 |
XT31 |
|
|
|
E-75 IU |
11,600 |
214,300 |
0.362 |
2.151 |
2.858 |
1.602 |
3.204 |
16,526 |
16,509 |
HT26 |
|
|
|
|
11,600 |
214,300 |
0.362 |
2.151 |
2.858 |
1.602 |
3.204 |
16,526 |
16,509 |
XT26 |
|
|
|
G-105 EU |
16,200 |
300,100 |
0.362 |
2.151 |
2.858 |
1.602 |
3.204 |
23,137 |
23,112 |
NC31 |
|
|
|
|
16,200 |
300,100 |
0.362 |
2.151 |
2.858 |
1.602 |
3.204 |
23,137 |
23,112 |
SLH90 |
|
|
|
|
16,200 |
300,100 |
0.362 |
2.151 |
2.858 |
1.602 |
3.204 |
23,137 |
23,112 |
HT31 |
|
|
|
|
16,200 |
300,100 |
0.362 |
2.151 |
2.858 |
1.602 |
3.204 |
23,137 |
23,112 |
XT31 |
|
|
|
G-105 IU |
16,200 |
300,100 |
0.362 |
2.151 |
2.858 |
1.602 |
3.204 |
23,137 |
23,112 |
NC26 |
|
|
|
|
16,200 |
300,100 |
0.362 |
2.151 |
2.858 |
1.602 |
3.204 |
23,137 |
23,112 |
HT26 |
|
|
|
|
16,200 |
300,100 |
0.362 |
2.151 |
2.858 |
1.602 |
3.204 |
23,137 |
23,112 |
XT26 |
|
|
|
S-135 EU |
20,800 |
385,800 |
0.362 |
2.151 |
2.858 |
1.602 |
3.204 |
29,747 |
29,716 |
NC31 |
|
|
|
|
20,800 |
385,800 |
0.362 |
2.151 |
2.858 |
1.602 |
3.204 |
29,747 |
29,716 |
SLH90 |
|
|
|
|
20,800 |
385,800 |
0.362 |
2.151 |
2.858 |
1.602 |
3.204 |
29,747 |
29,716 |
HT31 |
|
|
|
|
20,800 |
385,800 |
0.362 |
2.151 |
2.858 |
1.602 |
3.204 |
29,747 |
29,716 |
XT31 |
|
|
|
|
20,800 |
385,800 |
0.362 |
2.151 |
2.858 |
1.602 |
3.204 |
29,747 |
29,716 |
GPDS31 |
|
|
|
S-135 IU |
20,800 |
385,800 |
0.362 |
2.151 |
2.858 |
1.602 |
3.204 |
29,747 |
29,716 |
NC26 |
|
|
|
|
20,800 |
385,800 |
0.362 |
2.151 |
2.858 |
1.602 |
3.204 |
29,747 |
29,716 |
HT26 |
|
|
|
|
20,800 |
385,800 |
0.362 |
2.151 |
2.858 |
1.602 |
3.204 |
29,747 |
29,716 |
XT26 |
|
|
|
V-150 EU |
23,100 |
428,700 |
0.362 |
2.151 |
2.858 |
1.602 |
3.204 |
33,052 |
33,018 |
HT31 |
|
|
|
|
23,100 |
428,700 |
0.362 |
2.151 |
2.858 |
1.602 |
3.204 |
33,052 |
33,018 |
XT31 |
|
|
|
|
23,100 |
428,700 |
0.362 |
2.151 |
2.858 |
1.602 |
3.204 |
33,052 |
33,018 |
GPDS31 |
|
|
|
V-150 IU |
23,100 |
428,700 |
0.362 |
2.151 |
2.858 |
1.602 |
3.204 |
33,052 |
33,018 |
HT26 |
|
|
|
|
23,100 |
428,700 |
0.362 |
2.151 |
2.858 |
1.602 |
3.204 |
33,052 |
33,018 |
XT26 |
|
|
|
X-95 EU |
14,600 |
271,500 |
0.362 |
2.151 |
2.858 |
1.602 |
3.204 |
20,933 |
20,911 |
NC31 |
|
|
|
|
14,600 |
271,500 |
0.362 |
2.151 |
2.858 |
1.602 |
3.204 |
20,933 |
20,911 |
SLH90 |
|
|
|
|
14,600 |
271,500 |
0.362 |
2.151 |
2.858 |
1.602 |
3.204 |
20,933 |
20,911 |
HT31 |
|
|
|
|
14,600 |
271,500 |
0.362 |
2.151 |
2.858 |
1.602 |
3.204 |
20,933 |
20,911 |
XT31 |
|
|
|
X-95 IU |
14,600 |
271,500 |
0.362 |
2.151 |
2.858 |
1.602 |
3.204 |
20,933 |
20,911 |
NC26 |
|
|
|
|
14,600 |
271,500 |
0.362 |
2.151 |
2.858 |
1.602 |
3.204 |
20,933 |
20,911 |
HT26 |
|
|
|
|
14,600 |
271,500 |
0.362 |
2.151 |
2.858 |
1.602 |
3.204 |
20,933 |
20,911 |
XT26 |
|
|
|
Z-140 EU |
21,600 |
400,100 |
0.362 |
2.151 |
2.858 |
1.602 |
3.204 |
30,849 |
30,817 |
HT31 |
|
|
|
|
21,600 |
400,100 |
0.362 |
2.151 |
2.858 |
1.602 |
3.204 |
30,849 |
30,817 |
XT31 |
|
|
|
|
21,600 |
400,100 |
0.362 |
2.151 |
2.858 |
1.602 |
3.204 |
30,849 |
30,817 |
GPDS31 |
|
|
|
Z-140 IU |
21,600 |
400,100 |
0.362 |
2.151 |
2.858 |
1.602 |
3.204 |
30,849 |
30,817 |
HT26 |
|
|
|
21,600 |
400,100 |
0.362 |
2.151 |
2.858 |
1.602 |
3.204 |
30,849 |
30,817 |
XT26 |
|
2-7/8″ drill pipe is widely used in:
Small-diameter wellbore drilling;
Directional/horizontal well transition sections;
Connection between drill collars and large-diameter drill pipe;
Connection sections for fishing tools and logging tools;
Geological exploration and well workover operations.
The outer diameter is 2.875 inches, approximately 73.03 mm.
Outer diameter: 2-3/8″ drill pipe has a smaller outer diameter; 2-7/8″ drill pipe has a larger outer diameter.
Strength and load-bearing capacity: 2-7/8″ drill pipe has significantly higher tensile and torsional strength than 2-3/8″ drill pipe, making it more durable.
Different applicable working conditions: 2-3/8″ drill pipe is mostly used for shallow wells, well workovers, and low-load operations. 2-7/8″ drill pipe is suitable for small-diameter drilling, directional wells, and medium-depth wells.
Application positioning: 2-3/8″ drill pipe is lighter; 2-7/8″ is a more mainstream and versatile specification.
Common weights are 6.65, 6.85, and 10.40 lb/ft, corresponding to different wall thicknesses and working conditions.
E-mail: sales@eastern-steels.com
