API Non Magnetic drill collar and couplings

• 
• 
• 
• 
• 
• 

We supply slick drill collars,spiral drill collarsandnon-magnetic drill collars; their sizes are from 3-1/8 to 11 inches. Besides the drill collars in the table below, we can supply other drill collars at customers' request.


Materials:
Drill collars are manufactured from AISI 4145H modified steel, and are supplied in the "as rolled" surface finish condition. Alternative surface finishes are available.

Trepanning and Heat Treatment:
Drill collars are trepanned and drifted to API Spec 7-1. Full-length heat-treatment processes ensure that mechanical properties meet or exceed API Spec 7-1 requirements. A hardness range of 285-341, Brinell hardness and Charpy "V" notch minimum impact strength of 40 ft-lb at 70 F are guaranteed one inch below the surface.

Traceability:
Drill collar material and process traceability are maintained from receipt of the mill's certified raw material to completion of manufacturing. Serial numbers are die stamped on bar bodies.

Rigid Inspection Procedures:
We inspect all our drill collars to ensure compliance with API SPEC 7-1 standards. These inspections include visual dimensional checks as well as ultrasonic inspections over the entire body of the drill collar.

Cold Rolling:
Drill collar thread roots, as well as elevator recess upper radius, are cold-rolled. Cold rolling creates a compressive recess upper radius stress condition that increases fatigue life by minimizing crack initiation.

Phosphate-coated or Copper Plating:
All connections are phosphate-coated or copper plated to improve resistance to corrosion.

Slip Groove, Elevator Groove and Size:
Lake offers optional slip and elevator recesses to improve handling efficiency and safety. Unless otherwise specified, slip and elevator recesses are machined in compliance with API spec 7-1 guidelines.

Другие товары поставщика

	API Non Magnetic drill collar and couplings	We supply slick drill collars,spiral drill collarsandnon-magnetic drill collars; their sizes are from 3-1/8 to 11 inches. Besides the drill collars...
	Mud pump Valve assembly	Various sizes are available to fit all major mud pumps.An extensive range of valves and seats are offered,such as Premium Cross-Arms Valve and Seat...
	API 5CT N80 3 1/2 eue tubing couplings	All products will be made according to API and related international standard as per customers' requirements. Std Ref.:API 5CT and 5B ISO9001,2008 ...
	API Heavy Duty HDPE Пластиковая резьба для протекторов OCTG	Протектор для резьбы
	API Go & no go casing gauges for BSP THREADS	API thread Gauges usage: Used for checking API internal & external thread.Conform to: API 5B and 7.CSG,LCSG,LP,BCSG,TBG,UPTBG API Thread Gauge...

Похожие товары

	Farm Tool	Продавец: STEEL SEARCHER HONG KONG LIMITED	Steel Searcher-Farm/Agricultural tools refer to tools used in agricultural production, mostly non...
	Копировальная пила	Продавец: Tangshan Yifei Trading Co.,Ltd	Двусторонняя фрезерная пила, также известная как двухсторонняя летающая холодная пила, состоит из...
	CUSTOM PERFORMANCE PARTS	Продавец: Baoji Haiqiao Industrial & Trading Co., Ltd.	HQ starts from undertaking the task of making variety of custom titanium partsfor overseas custom...
	Air Powered Pneumatic Tools Impact Wrench 100% Made in Taiwan	Продавец: Soartec Industrial Corp. Air Pneumatic Tools	The listed price USD 182 for this Air Powered Pneumatic Tools Impact Wrench which is our flagship...
	LNMG0303R-LG CNC Milling Cutter Insert Tungsten Carbide Milling Inserts with PVD Coating	Продавец: Sichuan Burray Cemented Carbide Co., Ltd.	Our products have passed the ISO certification, we can accept OEM and to map processing custom, c...