311mm 12-1/4" tri cone bit /tri-cone bit/ three cone bit API STRANDARD

Specifications 1.drilling over 150 hours

2.direct factory bit

3.API standard

4.PetroChina supplier

SKH517,311.2mm,12 1/4inch  tri-cone bit details     SIRUITE  AVAILABLE  BITS  DETAILS  -WELCOME INQUIRY    

Item	TCI Tricone 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
	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 3 7/8” to 26” larger sizes for hole opener bit ,reamer bit
advantage	The most advanced production lines in China of rock bits (factory price); world famous brands agent
bearing type	sealed bearing and non-sealed bearing metal sealed journal bearing)   rubber sealed journal bearing Air cooled 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- Gauge protection
Material	tungstencarbideinsert,Carbonsteel
Packing	Wooden case or steel case
Payment term	T/T,L/C ,Western Union,Paypal
Delivery term	By sea or by air
Delivery time	2 days(stock), 30 days(production)
Market	South Europe,South Korea, Japan, Singapore ,Saudi Arabic,Dubai,USA, Middle east ,Africa, Europe,Central Asia,Russian
Application	Petroleum & gas ,water well ,mining ,oil field, construction, geothermal, directional boring, and underground foundation work

   

ROLLER  CONE BITS	ROLLER CONE BIT (M/H)		FORMATION HARDNESS	FORMATION	ROCK TYPE	COMPRESS STRENGTH
	WEM	OBM
111/124	15-30	18-33	Very soft	soft formation with sticky layers and low compressive strength	clay,silts, sands	<25 MPa
116/137 437	9-15	12-18	soft	soft formation with low compressive strength and high drill ability	claystone,marl, lignite,tuff, sandstone	25-50 MPa
126/139 517/527	4.5-9	6-12	Medium soft	soft to medium formation with low compressive strength interb dded with hard layers	claystone,marl lignite,sandstone silts anhydrrites tuff	50-75 MPa
211/217 517/537	2.5-6	3-6	Medium	medium to hard formation with high compressive strength and small abrasive layers	mudstone , limstone, anhydrites, sandstone	75-100 MPa
211/236 537/617	1.5-2.5	1.5-3	Medium hard	hard and dense formation with very high compressive strength but non-abrasive	limestone, anhydrites, dolomite	100-120MPa
311/347 627/637	1-1.5	1-1.5	Hard	hard and dense formation with very high compressive strength and some abrasive layer	shale,sandstone ,siliceous, siltstone	100-200MPa
637 /737 /837	1	1	Very  hard	extremely hard and abrasive formtions	quartzite, lgneous ,rocks	>200MPa

      TRICONE BIT INSTRUCTIONS   Tricone bit transportation    As the small volume of tricone bit and heavy weight,safety should be noticed during transportation.The package is carton or wooden case.Waterproof and damp proof should be noticed during transportation.   Tricone bit storage       There is rubber piece and lubricating grease in tricone bit,So it can not be stored in the open air.and be damp proof. The temperature should be 0-40 centigrade degrees. No welding,heating and other processing is permitted on bit.     Tricone bit validity       The roller bit should be utilized within four years after resembling.   Type selection of tricone bit         Appropriate bit should be choosen according to drilling formation lithology and reference on the conjoint well.       NOTICE: when shrink hole and long section is needed.it’s avoiding to work.     SIRUITE AVAILABLE ROCK DRILL BIT /MINING BIT KINDS     OUR ROCK DRILL BIT FACTORY SHOW       Our rock drill bit factory owes the most advanced production lines in China  and three senior engineers' over 30 years in rock drill bit industry !       Our drill bits supplied for geothermal well drilling spot outside     Company Competitive Power:   1.the most professional and experienced senior engineers in this field    guarantee high quality products. 2.MANUFACTURER position ensures competitive price. 3.Sincere salesmen are our business basis. 4.Different sizes and dimensions are available 5. A certain number of bulk stock ensures fast delivery 6. Best after-sales service

Welcome to inquiry and visit our factory       Trade Term:   Trade Term: FOB/ CIF /CFR Payment Term: T/T,L/C,western union,paypal Delivery Time:3~7 days Transportation:by sea,by air,by land Package:wooden case or plywood case MOQ:2PCS   Welcome to inquiry.    pls attach details below:  1. Size(diameter) 2.IADC code 3.Drilling formation 4.used or new condition  Notice: If you have special need,we will customize according to your demands !