3 7/8 HQ3 diamond bit for well drilling  

HQ3 diamond core bit is made with diamond and steel with forging process, HQ3 bit mainly use for broken formation drilling. Our company has manufacture impregnated diamond core bit since 2010, because of the high quality raw material and mature producing process we use, our diamond core bit is widely used in mining, water well drilling and geological drilling, till now we have won clients in many countries and feedback is good. Parameters of diamond core bit Bit size Core bit Reaming shell Bit size Outside diameter Insider diameter Outside diameter AQ 47.75 27.1 48 ATW…