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Hunan New Diamond Construction Machinery Co., Ltd.
Hunan New Diamond Construction Machinery Co., Ltd.
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7 7/8” 412 IADC CodeTricone Drill Bit For Oil Well , 200mm Bit Dia

Hunan New Diamond Construction Machinery Co., Ltd.
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7 7/8” 412 IADC CodeTricone Drill Bit For Oil Well , 200mm Bit Dia

Brand Name : New Diamond
Model Number : 7 7/8" 412 200mm Tricone drill Bits
Certification : ISO9001:2008
Place of Origin : Hunan, China (Mainland)
MOQ : Negotiable
Price : Negotiable
Payment Terms : L/C, T/T, Western Union
Supply Ability : According to order quantity
Delivery Time : 5-8 work days
Packaging Details : Carton packaging and wooden box packing
IADC Code : 412
Circulation Type : Jet Air
Pin Connection : 7 7/8" API
Metric Bit Diameter : 200mm
Product Weight : 34KG
Weight on Bit : 7,880-15,750Ibs
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The main structural features
1, the use of high strength and toughness carbide teeth, improve the impact resistance of teeth to reduce the broken tooth rate;
2, Optimized design of the number of teeth, the number of teeth, tooth height and unique alloy tooth profile, give full play to the bit cutting ability and cutting speed;
3, the use of snap-lock locking cone, can withstand high-pressure drilling;
4, cone welding inlay reduction alloy, improve anti-bite bearing capacity;
5, the use of highly saturated nitrile rubber O-ring, the optimized seal compression to improve the reliability of bearing seals;
6, the use of all-rubber reservoir can limit the pressure differential and prevent the drilling fluid from entering the lubrication system, providing a good lubrication for the bearing system and ensuring the normal working of "O" ring seals and increasing the working life of the drill bit;
7, the use of new low-wear grease, drill seal lubrication system to improve the ability of high temperature.



· Please select the applicable formation and parameters according to the instructions.

· Carefully check the bits appearance and to check the bits threaded end face,whether the serial number on the box and certificate.

· Selection of WOB and RPM should be within the limits of the recommended parameters, higher WOB and RPM cannot be used simultaneously.

· Bottom hole must be clean and bit must not be used for long section reaming.

· Drilling process must operate smoothly, find that there is Bie jump on abnormal phenomenon, should be timely analysis and take effective measures

· The bit should be kept indoor with dry and well ventilated conditions at 10-33℃ and kept from sunshine and rain. Stored under such conditions, quality of bit is guaranteed for 3 years.


Bit DiameterIADCApplicationsSpecial Features(Cutting Structure,Lug Protection)WeightPIN ConnOperating Suggestions WOB/RPM
7 7/8” 200mm412Very soft formations with low compressive strengths and high drillability.Chisel on gage,conical on inner rows;Hardmetal on lug;Wear resistant carbide on shirttail lip and lug.75344 1/2” API7,880-15,750Ibs/120-90RPM

Feature Advantage

1. Price commitment: in order to ensure the high reliability of products, raw material selection are using grapefruit brand products; under the same competitive conditions, and not to reduce product technical performance on the basis of sincerity at a favorable price to customers.

2. Quality commitment: product manufacturing and testing have quality records and inspection data; the performance of the product can withstand customer inspection.

3. Customer service: in order to create new diamond brand, enhance the visibility of enterprises,establish corporate image, we serve customers with the principle of "preferential prices, good service, reliable product quality" principle.

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