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4-Wings Step Drag Bits
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Product Details
| Place of Origin: | China | Brand Name: | SRF | Model Number: | 7inch |
| Type: | Core Drill Bit | Material: | Diamond | Use: | Well Drilling |
Product Description
3 blades/wings step drag bits
Drag bit are manufactured from forged high quality alloy steel and PDC cutter insert, plus state of art welding technology and multiple precision heat treatment to provide highest penetration rate and longest lifespan at roughest condition.
Drag bits are designed for medium to hard formation and are used in areas that contain a lot of rock and also in the oil field.
Size | Type Pin | Wt. (lbs.) |
1 3/4" - 2 1/2" | AW, A-Rod | 2 |
2 5/8" - 2 7/8" | AW, A-Rod | 2 1/2 |
2 3/4" - 3 1/4" | 3THD/4THD N-Rod, 2" IF | 4 |
3 3/8" - 3 3/4" | 3THD/4THD N-Rod, 2"IF | 4 1/2 |
3 7/8" - 4 3/4" | 2 3/8" API Pin | 6 |
4 7/8" - 5 1/8" | 2 3/8" API Pin | 7 |
5 1/4" - 5 1/2" | 2 3/8" API Pin | 8 |
4 5/8" - 5" | 2 7/8" API Pin | 10 |
5 1/8" - 5 1/2" | 2 7/8" API Pin | 11 |
5 5/8" - 6 1/4" | 3 1/2" API Pin | 18 |
6 1/2" - 6 3/4" | 3 1/2" API Pin | 19 |
7" - 7 1/2" | 3 1/2" API Pin | 21 |
7 5/8" - 8"-12 1/4 | 3 1/2" API Pin 4 1/2 6 5/8 | 23 |
Detailed pictures
Zhongcheng attend many exhibitions
ZhongCheng (SRF BITS) Certificate
Contact ZhongCheng:
Contact Us
- Hejian Zhongcheng Drill Bit Manufacture Co., Ltd.
- Contact nameLeia Sun Chat Now
- Phone0086-317-3223932
- AddressJunziguan Village, Shijingcun Township, Hejian
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