BQ NQ HQ PQ head assembly

1. available in all standard drilling sizes (B,N,H,P)., 2. hardened alloy, 3. precision machining - details see: https://www.machineto.com/bq-nq-hq-pq-head-assembly-10317503

Place of Origin:Hebei China (Mainland)	Brand Name:JS	Model Number:BQ NQ HQ PQ	Type:head assembly
Machine Type:Drilling Tool	Certification:ISO	Material:Carbon Steel	Processing Type:Forging
Use:Ore Mining

contact supplier for BQ NQ HQ PQ head assembly

Tangshan Jinshihead assembly features long life span, good compatibility with parts like inner tube and outer tube from other vendors, and availability in all spare parts.

core sizes

Double tube surface
Size(surface exploration drill)	Metric system(mm)		Imperial system(in)
Size(surface exploration drill)	Hole diameter	Core diameter	Hole diameter	Core diameter
BQ	60	36.4	2.36	1.43
NQ	75.7	47.6	2.98	1.88
HQ	96.1	63.5	3.78	2.5
PQ	122.7	85	4.83	3.34
Triple tube surface
NQ3	75.7	45	2.98	1.78
HQ3	96.1	61.1	3.78	2.41
PQ3	122.7	83	4.83	3.27