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Product Details:
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Sucker Seamless Steel Pipe High Precision Better Reliability
Description:
Drill collars are onshore and offshore petroleum geol-ogy, exploration and development drilling is an impor-tant tool.
Technical Features
High quality alloy steel is adopted to improve the overall conditioning, the product strength, long service life. Threaded roots for cold rolling strengthening treatment, pressure big, strong ability to resist fatigue. Thread after phosphat i ng or copper plating process, abrasion resistance, good sealing, corrosion resistance, resistance to strong adhesive.
Applications:
Drill rig,the hoist system for oil and gas drilling,oil field
Specifications :
The main technical parameters
| Meehanical property of Drill Collar | ||||||
| OD | Yield Strengh |
Tensile Strenght |
Elongation | BrineN Hardness |
Charpy | |
| mm | In inch | a0.2Mpa | ob Mpa | 4% | HB | AKVJ |
| 79.4-171.4 | 3 1/8-3/4 | ≥758 | ≥965 | ≥13 | 285-341 | ≥54 |
| 177.8-279,4 | 07-Nov | ≥689 | ≥930 | |||
The main technical parameters
| Length between Inner Thread Shoulder and the last Dens |
Diameter of Inner Thread |
Taper of the Hole nest to inner Thread |
Outer Thread Diameter Outer Thread Diameter |
Length between alternative Inner Thread Shoulder and Stress Re Iief Groove |
|
| 1•59mm | Dcb+0. 40, -0 | +20. 83 | DRG+0 -0. 79 | LRG +0 -3. 18 | |
| mm | mm/m | mm | mm | ||
| NC35 | 82. 6 | 82. 15 | 166. 67 | 82. 15 | 85. 73 |
| NC38(3 I/2IF) | 88.9 | 88. 11 | 166.67 | 89.3 | 92.08 |
| NC44 | 101.6 | 101.6 | 166. 67 | 106. 36 | 104. 78 |
| NC46 (4 IF) | 101.6 | 106.76 | 166.67 | 109. 93 | 104. 78 |
| NC50(4 I/2IF) | 101.6 | 117.48 | 166. 67 | 120. 65 | 104. 78 |
| NC56 | 114 3 | 121.84 | 250 | 134. 14 | 117.48 |
| NC61 | 127 | 132. 95 | 250 | 149. 25 | 130. 18 |
| NC70 | 139.7 | 152 | 250 | 171.05 | 142. 88 |
| 6 5/8REG | 114.3 | 134. 14 | 166.67 | 137.72 | 117. 48 |
| 7 5/8REG | 120.7 | 133. 35 | 250 | 162. 72 | 123. 83 |
| 8 5/8REG | 123.8 | 149. 25 | 250 | 184.94 | 127 |
Competitive advantages:
Competitive price with top quality,professional export service,provide all products as customer’s requirement,respond within shortest tim
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