borehole drilling machine

1.Fast drilling rate, 2.Strong cutting structure durability, 3.Bearing sealed: HJ, HA, W, 4.Good quality and after-sale service - details see: https://www.machineto.com/borehole-drilling-machine-10125262

Condition:New	CNC or Not:Normal	Place of Origin:Hebei China (Mainland)	Brand Name:Kingdream
Model Number:HJ 517G	Type:Center Drill Bit	Material:alloy steel, tungsten carbide insert	certification:ISO9001&API
processing types:forging	formation:soft to hard formation	IADC:117-837	colour:Blue yellow white, etc

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Model	TCI BIT, STEEL TOOTH BIT
IADC CODE	116 117 126 127 136 137 216 217 226 316 317 326 327 336 337 115 125 135 215 225 235 315 325 335 114 124 214 314 111 121 131 346 347
IADC CODE	417 427 437 517 527 537 617 627 637 737 837 832 415 425 435 445 525 625 635 416 427 436 446 447 516 526 537 547 516 536 535
available sizes:	From 2 7/8 to 26” larger sizes for hole opener bit ,reamer bit
advantage	most favorable price and best quality
bearing type:	sealed bearing and non-sealed bearing HJ(metal sealed journal bearing) HA (rubber sealed journal bearing aircooled bearing type
Formation or layer	soft ,medium soft ,hard, medium hard, very hard formation
Button size (extra features)	Button bit,saw teeth 1) Y-Conical teeth 2) X-chisel teeth 3)K- wide teeth 4)G- Gague protection
Material	Alloy steel ,carbide
Packing	Wooden case or steel case
Payment terms	T/T,L/C, Western union
Delivery terms	By sea or by air
Delivery time	Within 3 to 7 days
Market	Canada, USA, Middle east ,Africa, Europe
Application	Petroleum & gas ,water well ,mining and tectonic industries ,oil field, construction, geothermal, directional boring, and underground foundation work

specifications

IADC		437	517	537	617	637	737
WOB	KN/mm (bit dia.)	0.5-0.75	0.5-0.85	0.5-0.85	0.55-0.85	0.55-0.85	0.55-0.85
	Lb/in (bit dia.)	2860-4280	2860-4860	2860-4860	3140-4860	3140-4860	3140-4860
	r.p.m	70-45	70-45	70-45	70-45	60-40	60-40