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1. OD: 3 1/2'' inch/ 3.5'' inch/ 88.9mm
2. Thickness: 9.35 mm (13.3 LB/FT )
3. Tool joint: NC38
4. Steel grade: E75
5. Length: RII
Alternative:
Internal plastic coating: TC2000, TK34
Features:
1. Strictly according to API 5DP standard
2. Yield strength: Min 517Mpa
3. Tensile strength: Min 689Mpa
4. Pipe body material: High quality alloy seamless pipe of E75
5. Tool joint: 35CrMo
6. Thread treatment: Phosphorization or copper plating
7. Suitable for water well, geothermal well, gas well, oil well
8. Safe drilling depth: Within 2,000 meters
More Standard Drill pipe specifications:
| Diameter (inch) | Grade | Upset | RSC (Thread) | Diameter (mm) | Thickness (mm) |
| IU | |||||
| 4 | E | IU | NC40 | 101.60 | 8.38 |
| 4 | X | IU | NC40 | 101.60 | 8.38 |
| 4 | G | IU | NC40 | 101.60 | 8.38 |
| 4 | S | IU | NC40 | 101.60 | 8.38 |
| 4 1/2 | E | IU | NC46 | 114.30 | 6.88 |
| 2 3/8 | E | EU | NC26 | 60.32 | 7.11 |
| 2 3/8 | X,G | EU | NC26 | 60.32 | 7.11 |
| 2 7/8 | E | EU | NC31 | 73.02 | 9.19 |
| 2 7/8 | X,G | EU | NC31 | 73.02 | 9.19 |
| 2 7/8 | S | EU | NC31 | 73.02 | 9.19 |
| 3 1/2 | E | EU | NC38 | 88.90 | 6.45 |
| 3 1/2 | E | EU | NC38 | 88.90 | 9.35 |
| 3 1/2 | X | EU | NC38 | 88.90 | 9.35 |
| 3 1/2 | G | EU | NC38 | 88.90 | 9.35 |
| 3 1/2 | S | EU | NC38 | 88.90 | 9.35 |
| 3 1/2 | E | EU | NC38 | 88.90 | 11.40 |
| 3 1/2 | X | EU | NC38 | 88.90 | 11.40 |
| 3 1/2 | G | EU | NC38 | 88.90 | 11.40 |
| 3 1/2 | S | EU | NC38 | 88.90 | 11.40 |
Package
1. The drill pipes will be packed into bundles as 3x3, 3x4, 4x4 etc. and loading into containers after black painting and thread protectors installation.
2. For 20’ container, the max loading weight is 21 metric tons
3. For 40’ container, the max loading weight is 27 metric tons
4. Usual loading port is Xingang port in Tianjin, main port in north of China
Drill pipe quality control:
a) Before order to be confirmed, the raw material of pipe body and tool joint should be booked from famous big steel enterprises in China
b) Raw material’s size, quantity, length, mechanical property are checked by our QC staff and factory own laboratory
c) Every drill pipe has nondestructive inspection , cleaned and thread oil before packing.
