| Customization: | Available |
|---|---|
| After-sales Service: | Timely After-Sale Assistance |
| Warranty: | 12 Month |
Suppliers with verified business licenses
Audited Supplier Audited by an independent third-party inspection agency
| Sort |
Name |
Upper connection |
Bottom Connection |
Type |
| 1 |
Kelly saver sub |
Kelly |
Drill pipe |
Type A or B |
| 2 |
Drill pipe sub |
Drill pipe |
Drill pipe |
Type A or B |
| 3 |
Crossover sub |
Drill pipe |
Drill collar |
Type A or B |
| 4 |
Drill collar sub |
Drill collar |
Drill collar |
Type A or B |
| 5 |
Bit sub |
Drill collar |
Bit |
Type A or B |
| 6 |
Swivel sub |
Swivel bottom sub |
Kelly |
Type C |
| 7 |
Junk sub |
Kelly |
Drill pipe |
Type C |
|
Drill pipe |
Fishing tool |
Type C |
| Outer diameter dimension mm(in) |
(σb) Mpa Tensile strength |
σ0.2 Mpa Yield strength |
84 Elongation |
AKV J Impact |
HB Brinell Hardnes |
| 79.4-175(31/8-67/8) | ≥965 | ≥760 | ≥13 | ≥54 | ≥285 |
| 178-254(7-10) | ≥930 | ≥690 | ≥13 | ≥54 | ≥277 |
| Drill pipes |
OD (DL,DM,DU) |
Df Bevel Diameter |
ID |
Type | Bending strength ration | ||||
| Size | Grade | Basic size | Limiting deviation | Basic size | Limiting deviation | Basic size | Limiting deviation | ||
|
60.3 |
E |
85.7 |
±0.8 |
83.0 |
±0.4 |
44.5 |
+0.4
-0.8 |
NC26-E(23/8IF-E) |
1.10 |
|
X |
NC26-X(23/8IF-X) |
0.87 |
|||||||
|
G |
NC26-G(23/81F-G) |
0.79 |
|||||||
|
73.0 |
E |
104.8 |
100.4 |
54.0 |
NC31-E(27/8IF-E) |
1.03 |
|||
|
X |
50.8 |
NC31-X(27/8IF-X) |
0.90 |
||||||
|
G |
NC31-G(27/8IF-G) |
0.82 |
|||||||
|
S |
111.1 |
41.3 |
NC31-5(27/BIF-5) |
0.82 |
|||||
|
88.9 |
E |
120.7 |
116.3 |
68.3 |
NC38-E(31/81F-E) |
0.98 |
|||
|
X |
127.0 |
65.1 |
NC38-X(31/8IF-X) |
0.87 |
|||||
|
G |
61.9 |
NC38-G(31/8IF-G) |
0.86 |
||||||
|
S |
54.0 |
NC3B-S(31/BIF-S) |
0.80 |
||||||
|
E |
65.1 |
NC38-E(31/8IF-E) |
0.97 |
||||||
|
X |
61.9 |
NC38-X(31/81F-X) |
0.83 |
||||||
|
G |
54.0 |
NC38-G(31/8IF-G) |
0.90 |
||||||
|
5135 |
139.7 |
127.4 |
57.2 |
NC40-G(4FH-G) |
0.87 |
||||
|
101.6 |
E |
152.4 |
±0.8 |
145.0 |
±0.4 |
82.6 |
+0.4
-0.8 |
NC46-E(4IF-E) |
1.23 |
|
X |
NC46-X(41F-X) |
0.97 |
|||||||
|
G |
NC46-G(4IF-G) |
0.88 |
|||||||
|
5 |
76.2 |
NC46-S(4IF-S) |
0.81 |
||||||
|
114.3 |
E |
168.3 |
154.0 |
95.3 |
NC50-E(41/2IF-E) |
1.23 |
|||
|
X |
NC50-X(41/2IF-X) |
0.97 |
|||||||
|
G |
NC50-G(41/2IF-G) |
0.88 |
|||||||
|
S |
88.9 |
NC50-5(41/2IF-S) |
0.81 |
||||||
|
E |
92.1 |
NC50-E(41/2IF-E) |
1.02 |
||||||
|
X |
88.9 |
NC50-X(41/2IF-X) |
0.96 |
||||||
|
G |
NC50-G(41/2IF-G) |
0.86 |
|||||||
|
S |
76.2 |
NC50-5(41/2IF-S) |
0.87 |
||||||
|
127.0 |
E |
168.3 |
±0.8 |
154.0 |
±0.4 |
95.3 |
+0.4
-0.8 |
NC50-E(41/2IF-E) |
0.92 |
|
X |
880 |
NC50-X(41/2IF-X) |
086 |
||||||
|
G |
82.6 |
NC50-G(41/2IF-G) |
0.89 |
||||||
|
S |
69.9 |
NC50-5(41/2IF-S) |
0.86 |
||||||
|
E |
88.9 |
NC50-E(41/21F-E) |
0.86 |
||||||
|
X |
76.2 |
NC50-X(41/2IF-X) |
0.86 |
||||||
|
G |
69.9 |
NC50-G(41/2IF-G) |
0.87 |
||||||
|
139.7 |
E |
177.8 |
170.7 |
95.3 |
51/2FH-E |
1.53 |
|||
|
X |
51/2FH-X |
1.21 |
|||||||
|
G |
51/2FH-G |
1.09 |
|||||||
|
S |
184.2 |
88.9 |
51/2FH-S |
0.98 |
|||||
|
E |
177.8 |
51/2FH-E |
1.21 |
||||||
|
X |
51/2FH-X |
0.95 |
|||||||
|
G |
184.2 |
51/2FH-G |
0.99 |
||||||
|
S |
82.6 |
51/2FH-S |
0.83 |
||||||
Dimensions of converters for connecting drill collars
|
OD(DL,DM) |
Chamfer diameter DF |
ID |
Drill collar code | Bending ratio | |||
| Basic size | Limit deviation | Basic size | Limit deviation | Basic size | Limit deviation | ||
|
79.4 |
+1.2 0 |
76.2 |
±0.4 |
31.8 |
+1.6 0 |
ZTNC23-31 |
2.57:1 |
|
88.9 |
82.9 |
38.1 |
ZTNC26-35(23/8IF) |
2.42:1 |
|||
|
104.8 |
+1.6 0 |
100.4 |
50.8 |
ZTNC31-41(27/8IF) |
2.43:1 |
||
|
120.7 |
+2.0 0 |
114.7 |
ZTNC35-47 |
2.58:1 |
|||
|
127.0 |
121.0 |
57.2 |
ZTNC38-50(31/21F) |
2.38:1 |
|||
|
152.4 |
+3.2 0 |
144.5 |
ZTNC44-60 |
2.49:1 |
|||
|
71.4 |
|||||||
|
158.8 |
149.2 |
57.2 |
ZTNC44-62 |
2.84:1 |
|||
|
150.0 |
71.4 |
ZTNC46-65(4IF) |
2.91:1 |
||||
|
165.1 |
154.8 |
57.2 |
ZTNC46-65(4IF) |
2.63:1 |
|||
|
71.4 |
|||||||
|
171.4 |
+4.0 0 |
159.5 |
57.2 |
ZTNC46-67(4IF) |
2.76:1 |
||
|
177.3 |
164.7 |
ZTNC50-67(41/2IF) |
3.05:1 |
||||
|
71.4 |
|||||||
|
184.2 |
169.5 |
ZTNC50-72(41/2IF) |
3.18:1 |
||||
|
196.9 |
185.3 |
ZTNC56-77 |
2.70:1 |
||||
|
203.2 |
190.1 |
ZTNC56-80 |
3.02:1 |
||||
|
209.4 |
195.7 |
ZT65/8REG-82 |
2.93:1 |
||||
|
228.6 |
+4.8 0 |
212.7 |
ZTNC61-90 |
3.17:1 |
|||
|
241.3 |
223.8 |
76.2 |
ZT75/8REG-95 |
2.81:1 |
|||
|
247.6 |
+6.4 0 |
232.6 |
ZTNC70-97 |
2.57:1 |
|||
|
254.0 |
237.3 |
ZTNC70-100 |
2.81:1 |
||||
|
279.4 |
266.7 |
ZTNC77-110 |
2.84:1 |
||||
Note: The drill collars according to SY/T5144.
Dimensions for converters connecting kelly pipe to water
|
OD |
Chamfer diameter DF | Thread designation | |||||
| Basic size | Limit deviation | Basic size | Limit deviation | Standard | Select | ||
| Standard | Select | Standard | Select | ||||
|
196.8 |
146.0 |
±0.8 |
186.1 |
134.5 |
±0.4 |
6 5/8 REG |
4 1/2 REG |
|
196.8 |
146.0 |
±0.8 |
186.1 |
134.5 |
±0.4 |
6 5/8 REG |
4 1/2 REG |
| ottom end of kelly pipe | Inside diameter ID | Kelly type | Kelly specifications | |||||
| Outer diameter DLR | Chamfer diameter DF | Thread designation | ||||||
| Basic size | Limit deviation | Basic size | Limit deviation | Basic size | Limit deviation | |||
|
85.7 |
±0.8 |
82.9 |
±0.4 |
NC26(2 3/8IF) |
31.8 |
+1.60 |
Square drill pipe |
2 1/3 |
|
104.8 |
100.4 |
NC31(2 7/8IF) |
4.4 |
3 |
||||
|
120.6 |
116.3 |
NC38(3 1/2IF) |
57.2 |
3 1/2 |
||||
|
158.8 |
145.3 |
NC46(4IF) |
71.4 |
4 1/2 |
||||
|
161.9 |
150.4 |
Nc50(4 1/2IF) |
||||||
|
177.8 |
170.7 |
5 1/2FH) |
82.6 |
5 1/2 |
||||
|
171.0 |
NC56 |
|||||||
|
85.7 |
±0.8 |
82.9 |
±0.4 |
NC26(2 3/8IF) |
38.1 |
+1.60 |
A hexagonal drill pipe |
3 |
|
104.8 |
100.4 |
NC31(2 7/8IF) |
44.4 |
3 1/2 |
||||
|
120.6 |
116.3 |
NC38(3 1/2IF) |
57.2 |
4 1/2 |
||||
|
158.8 |
145.3 |
NC46(4IF) |
76.2 |
5 1/2 |
||||
|
161.9 |
150.4 |
NC50(4 1/2IF) |
82.6 |
|||||
|
177.8 |
170.7 |
5 1/2FH) |
88.9 |
6 |
||||
|
171.0 |
NC56 |
|||||||
The chamfer diameter of the converter connecting the bit
| Chamfer diameter DF | Adapter thread code | |
| Basic size | Limit deviation | |
|
77.4 |
±0.4 |
2 3/8REG |
|
91.7 |
2 7/8REG |
|
|
104.4 |
3 1/2REG |
|
|
135.3 |
4 1/2REG |
|
|
165.1 |
5 1/2REG |
|
|
186.9 |
6 5/8REG |
|
|
215.1 |
7 5/8REG |
|
|
242.5 |
8 5/8REG |
|
Surface roughness
| Pin shoulder face | box shoulderface | thread working surface | thread crest surface |
|
Ra≤3.2 |
Ra≤3.2 |
Ra≤6.3 |
Ra≤12.5 |
Jiyuan City East Heavy Industry Co., Ltd.is a high-tech enterprise specializing in manufacturing drilling tools of "DongFang " brand for petroleum and geological exploration. It lies at the foot of majestic Mount Wangwu in Jiyuan City, Henan Province, beside the key water project of Xiaolangdi Dam on the Yellow River. It covers more than thirty thousand square meters, owning the properties of RMB one hundred million Yuan. Good cooperative relation has been established between our company and some authoritative institutions, such as China University of Petroleum, Taiyuan University of Technology and Tubular Goods Research Center of CNPC, which provide technical force to develop new products.
The company owns a full range of drilling tool product lines, main equipment' s of deep-hole drilling and boring machine, ordinary lathe, the heat treatment product lines of intermediate frequency, spiral milling machine tools, CNC pipe threading lathes, the imprint of milling machines and so on. Our company has established a special testing center equipped with advanced delicate testing equipment from home and abroad. We control the whole process of manufacturing,strictly implementing the standard of SY/T5144,SY/T5146,SY/T5051,SY/T6509,API7-1,API7-2,ensuring the indices of our products meet the standard in China and the standard of API(American Petroleum Institution).We have got ISO9001Certification and the authorization of using the symbol of API. The main products are non-magnetic drill collar, non-magnetic pressure bearing drill pipe, Non magnetic short drill collar,Directional joint,ordinary drill collar, integral weighted drill pipe, square drill pipe, hexagonal drill pipe, spiral drill collar, centralizer, adapter and some long shaft products.
With "FAITH BASED, INNOVATIVE BUSINESS, KEEP IMPROVING,PURSUIT OF EXCELLENCE "as our consistent policy, we wound like to develop cooperation and technological exchanges with friends all over the world with our honest credit, financial strength and technological superiority, and work together for manufacturing and development of drilling equipment's in order to create a better future.
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