| Customization: | Available |
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| Customized: | Customized |
| Standard: | API |
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| Description | Milled Tooth Bit |
| Size | from 3'' to 36", or as Customized. |
| Seal type | Rubber seal, Metal seal, or as Customized. |
| Formation | Suitable for medium formation with high compressive strength, such as medium soft shale, anhydrite, medium soft limestone, medium soft sandstone and soft formation with hard interlayer. |
| Application | Oil & gas well drilling, geothermal drilling, water well drilling and mining drilling. |
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Hebei Ruishi Bits Manufacturing Co., Ltd
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| Item | IADC Code | WOB (KN/mm) |
RPN (r/min) |
Application |
| 1 | 111/114/115 | 0.3-0.75 | 200-80 | Very Soft formations with low compressive strength and high drill ability (Like caly, mudstone, chalk) |
| 2 | 116/117 | 0.35-0.8 | 150-80 | |
| 3 | 121 | 0.3-0.85 | 200-80 | Soft formations with low compressive strength and high drill ability (Like mudstone, gypsum, salt, soft limestone) |
| 4 | 124/125 | 0.3-0.85 | 180-60 | |
| 5 | 131 | 0.3-0.95 | 180-80 | Soft to medium formations with low compressive strength (Like medium soft shake, medium soft limestone, medium soft sandstone, medium formation with harder and abrasive interbeds) |
| 6 | 136/137 | 0.35-1.0 | 120-60 | |
| 7 | 211/241 | 0.3-0.95 | 180-80 | Medium formations with high compressive strength (Like medium soft shake, hard gupsum, medium soft limiestone, medium soft sandstone, soft formation with harder interbeds) |
| 8 | 216/217 | 0.4-1.0 | 100-60 | |
| 9 | 246/247 | 0.4-1.0 | 80-50 | Medium hard formation with high compressive strength (Like hard shale, limestone, sandstone, dolomite) |
| 10 | 321 | 0.4-1.0 | 150-70 | Medium abrasive formations (Like abrasive shale, limestone, sandstone, dolomite, hard gypsum, marble) |
| 11 | 324 | 0.4-1.0 | 120-50 | |
| 12 | 437/447/435 | 0.35-0.9 | 240-70 | Very Soft formations with low compressive strength and high drill ability (Like caly, mudstone, chalk, gypsum, salt, soft limestone) |
| 13 | 517/527/515 | 0.35-1.0 | 220-60 | Soft formations with low compressive strength and high drill ability (Like mudstone, gypsum, salt, soft limestone) |
| 14 | 537/547/535 | 0.45-1.0 | 220-50 | Soft to medium formations with low compressive strength (Like medium soft shake, medium soft limestone, medium soft sandstone, medium formation with harder and abrasive interbeds) |
| 15 | 617/615 | 0.45-1.1 | 200-50 | Medium hard formation with high compressive strength (Like hard shale, limestone, sandstone, dolomite) |
| 16 | 637/635 | 0.5-1.1 | 180-40 | Hard formation with high compressive strength (Like limestone, sandstone, dolomitem hard gypsum, marble) |
We Provide Wooden Boxes, Iron Boxes, or according to Customer's Customized Requirements.
At Ruishi, we promote comprehensive quality management with a focus on customer needs.
To ensure consistent quality and bit performance, we adhere strictly to
√ API SPEC7-1 and ISO9001 quality standards during production,
√ ISO 14001 environmental management systems,
√ OHSAS 18001 occupational health and safety protocols.
After-sale Warranty
(1) Free replacement for quality-related problems.
(2) Timely after-sale support is always available.
Q1: Are you a manufacturer or a trade company?
A1: We are a manufacturer, and we can help you find different kinds of products in the Chinese market to match your needs.
Q2. Can I have a sample order?
A2. Yes, we welcome sample order to test. Mixed samples are acceptable.
Q3. What about the lead time?
A3. Samples within 3 days, big order within 30 days.
Q4. Do you have any MOQ limit?
A4. One piece for sample testing is available.
Q5. How do you ship the goods and how long does it take to arrive?
A5. We usually send by DHL, UPS, FedEx or TNT. It takes around 3-5 days. Sea shipping also optional.
Q6. What about Payment?
A6. TT, Paypal, L/C, Western Union; 30% deposit before mass production, balance against copy of B/L.
Q7. How to deal with the faulty?
A7. During the warranty period, we will repair or replace defected products.
Q8. Can I visit your factory online?
A8. Yes, we can show our workshop, warehouse, offices online by WeChat, Whatsapp or Skype.
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