8 1/2" IADC Code 637 / Single Roller Bit / Roller Cones Bit / Single Roller Cutter / TCI / ...

• Certification：ISO 9001:2000
• Standard：GB, SGS
• Surface Treatment：Spray-Paint
• Manufacturing Process：Forging
• Material：Carbon Steel
• Color：Customized

=== Base Info ===

• Model NO.：8 1,2"-637
• Cutting Structure：TCI
• IADC：637
• Size：8 1,2 Inch
• Application：Soft Formation, Medium Hard Formation
• Structure：Full Inserts
• Transport Package：Plywood Box
• Specification：12kgs
• Trademark：MILALION
• Origin：Huanggang City, Hubei, China
• HS Code：8207199000
• Production Capacity：10000pieces,Year

=== Description ===
Size8 1/2" 216 mmIADC code637StructureGauge / Inner row : conical spherical.Assembly InstructionWelding installation mode, the angle of inclination of the back of the lug to the cylinder is 3~5 degrees. Ensure that the roller bit is  installed in the same circumference, the height of the cone bit is the same level. During welding, it is strongly suggested that the roller bit should be immersed in water or welded by intermittent operating to avoid high temperature to damage sealing system.ApplicationCompressive strength of formations between 30 to 180Mpa
2. Pictures of bit


3. Q & A
Q1: Are you a distributor or a manufacturer?
A1: We are a manufacturer, and we are specialized in production of different kinds of drilling machinery parts.

Q2: What's the production capacity for a month?
A2: 850 pieces.

Q3: What's the MOQ?
A3: 5 pieces.

Q4: What's the packaging?
A3: Standard export wooden box.

Q5: How to place an order?
A5: Please send me such informations :
      1) Size and IADC code of the bit;
      2) Quantity;
      3) Formation
      4) Packing demand

4. Awards




5. About us
MILALION TOOLS CO.,LTD established in 2009 which is a high-tech enterprise engaged in R&D, production and sale, core products are tri-cone rock bit  with 6 1/4~12 1/4 inches, roller cutters,construction bit, water well tri-cone bit, hammer and DTH with different type for global customers in mineral exploration, underground & surface mining of all kinds of rock conditions.
The quality and ability have been improved rapidly according to innovating production technology constantly. Meanwhile, NC technology has realized parametric design of roller bit  and roller. And the company also works with some universities and experts to research the structure, sealing and technology of tri-cone rock bit. Compared with the traditional products, our rock bits with new technology are of excellent material, reasonable design and advanced technology, which enhances the roller bits' bearing capacity and working life. Can be used in different rock formation, tunnel, pipe rock.
MILALION TOOLS CO.,LTD devoted to science and technology research and development, the  technology content of the product is very high. Our company is a manufacturer with intellectual property rights independently. And the company has mastered the core technology and owned 18 patents, including 3 patents for invention and 15 patents for utility model. We have passed the ISO9001 quality system certification in 2011.
The new and high efficient mining rock roller bit manufactured by ourselves is applicable to soft, hard and very hard formation. It has the characteristic of long life, high efficiency and slag discharge easily. And its drill depth is 2 or 3 times than the common roller bit. Can completely meet the mining , tunnel excavation using requirements. The company is the long-term and stable supplier for large mining industry groups of China, such as Jiangxi Copper Group, Shougang Metallurgical Group, Hebei Steel Group, Nei Monggol Bao Steel Group, Shanxi Tai Steel Group. The market occupancy in China reaches to 35% and the products are exported to Peru, Chile, Pakistan, South Africa and Australia, South-east Asia etc.
With an enterprise spirit of passion, innovation and integrity, we sincerely hopes to cooperate with both of domestic and foreign customers for the future while its development.