Grewin-Tungsten Carbide Spherical Drill Bit Button for Mining

• Certification：ISO 9001:2000, ISO 9001:2008, SGS
• Standard：GB
• Surface Treatment：Polishing
• Manufacturing Process：Forging
• Material：Tungsten Carbide
• Grade：Yg8c, Yg11c, Yk05, Yk20

=== Base Info ===

• Model NO.：All sizes
• Application：Mining, Water Well Drilling, Construction
• Delivery Time：5 ~ 15 Days
• Raw Material：100% Tc
• Surface：Polish
• Shape：Spherical,Conical,Ballistic,Flattop,Crested Chisel
• Process：Hot Insert or Cold Pressing Bit Inserting Process
• Shipment：FedEx,DHL,TNT,UPS,EMS,etc.
• Transport Package：Standard Export Carton
• Specification：33x29x19cm
• Trademark：GW
• Origin：Zhuzhou, Hunan
• HS Code：8208101900
• Production Capacity：20 Tons Annually

=== Description ===

Grade

Density (g/cm3)

Hardness
(HRA)

TRS
(MPa)

YG8

14.80

89.5

2200

YG8C

14.80

88.5

2400

YG11C

14.40

87.00

2850

YK05

14.95

90.5

2500

YK15

14.60

87.6

2700

YK20

14.52

87.3

2650

YK25

14.40

87.2

2550

Grade

Applications recommended

YG8

For coring crowns, electric coal drill bits, coal cutting picks, oil cone bits and scraping knife bits, used in geological prospecting, coal mining and oil well boring.

YG8C

Mostly used as the buttons of small and medium sized percussion bits and as the inserts of rotary prospecting bits to cut soft and medium hard formations.

YG11C

Suitable for embedding rotary percussive drill bits of heavy rock drilling machines for drilling hard formations of class f=18 or above

YK05

Mostly used as the buttons of small and medium sized percussion bits and as the inserts of rotary prospecting bits to cut soft and medium hard formations.

YK15

Suitable for embedding rotary percussive drill bits of light rock drilling machines for drilling medium rock formations of class f=14-15

YK20

Suitable for embedding rotary percussive drill bits of medium rock drilling machine for drilling hard rock formations of class f=18 or above.

YK25

Primarily for the buttons and inserts of rotary percussion bits to cut medium-hard and very hard formations