Surface Set Diamond Core Bit

Categories: Core Bits

Mark & model: Surface set diamond core bit is suitable for the soft to hard strata which is featured as fast speed of drilling and long service time.

Product profile: Surface Set Diamond Core Bit

The surface set diamond bit is produced from a single layer of natural diamond setting on the surface of bit crown with hard matrix.
Surface set diamond bit is mainly recommended for drilling soft to hard formations. Generally speaking, surface set diamond bit can provide satisfying penetration rate.
To choose a right surface set for the formations drilled, we need at least consider the following aspects: diamond size, diamond grade, profile design.Principle of choosing diamond size–the harder the rocks, the smaller the diamond size should be.

Diamond Size	Formation Drilled
10/20 SPC*	Soft formation
20/30 SPC	soft to medium formation
30/40 SPC	medium formation
40/60 SPC	Medium to hard formation
< 60/80 SPC	Very hard formation
SPC is short for Stone per Carat 40/60 is Forsun standard diamond size for natural diamond core bit **Other sizes are available as per request

Rule of selecting diamond grade–the harder the rocks, the better the diamond grade should be.

Diamond Grade	Formation Drilled
A Grade	Soft formation
AA grade	Soft to medium formation
AAA grade	Hard to very hard formation
*AA grade is Forsun standar diamond grade used in natural diamond core bit