Changsha Drilling Machinery CO., LTD

Contact Us

Name: Perry Tan
Tel: 0086-731-84077805
Fax: 0086-731-84072772
E-mail: csdrillingtools@vip.126.com
E-mail: info@csdrillingtools.com
Add: 5# Panpan road, economic development zone, Changsha, Hunan, China. Zip 410100
Skype: csdrillingtools
QQ: 2522716948
Skype: csdrillingtools QQ: 2522716948 csdrillingtools@vip.126.com info@csdrillingtools.com

Link
Drill bit pressure selection sheet
 


Bit type

Surface set core bit

Increase the pressure

Impregnated core bit

Decrease the pressure

Bit parameters

Large diameter, thick wall, soft matrix

Increase the pressure

Small diameter, thin wall, hard matrix

Decrease the pressure

Rock properties

Hard and complete

Increase the pressure

Soft and broken

Decrease the pressure

Diamond

Good quality, big quantity, big size

Increase the pressure

Poor quality, small quantity, small size

Decrease the pressure

Cut area of rock

Big cut area

Increase the pressure

Small cut area

Decrease the pressure