Our Stabilizers are manufactured from forging single piece of AISI 4145H modified alloy steel, full length quenched and tempered to obtain API Spec. 7-1, NS-1 and DS-1 properties. Ultrasonic inspection and MPI inspections are performed on each forging over its full length and section, after rough machining according to API Spec 7-1, NS-1 and DS-1. Mill test certificates including mechanical properties, chemical analysis and inspections are supplied with all stabilizers.

Hole Openers are versatile tools used for hole enlargement up to 42 “. Body is machined from AISI 4145 Mod., fully heat-treated forging to API Spec. 7-1 with cutter arms welded onto the body. Cutter arms are hardfaced and equipped with removable of fixed cutter. Hole Opener have three to seven jet tubes with replaceable nozzles so that jet streams quickly clean the cutters and the enlarged hole.

All rotary subs, Lift Subs and Lift Plugs are manufactured from AISI 4145H modified chromium molybdenum alloy steel, fully-quenched and tempered to obtain API Spec. 7-1 mechanical properties. All connections are machined according to API Spec.7-2 and thread roots are cold worked, phosphatized and coated with API thread compound and equipped with protectors.

Non-Magnetic Drill Collars Non-Magnetic Flex Collars, Pony Collars and Stabilizers are produced from Amagnit 501 and Amagnit 601. Amagnit 501 and 601 are chromium manganese austenitic low carbon alloy steels obtained by VOD process, and rotary hammer warm forging process combining chemical analysis and temperature / time cycle. Amagnit 501 and 601 are resistant to stress corrosion cracking with high mechanical properties, low magnetic permeability and no tendency to galling. Ultrasonic inspection and MPI inspections are performed on each forging over its full length and section, after rough machining according to API Spec 7-1. A compressive layer is applied to the bore of the collars to increase the resistance to stress corrosion cracking.Accordion Content

Integral Heavy Weight Drill Pipes Heavy Weight Drill Pipes are machined from 31ft bars of AISI 4145H Mod. alloy steel, full-length quenched and tempered to obtain the API Spec. 7-1, NS-1 and DS-1 mechanical properties. All Heavy Weight Drill Pipe bars are trepanned and inside diameters are gauged to API Spec.7-1 specification,

Welded Heavy Weight Drill Pipes

Spiral Heavy Weight Drill Pipes

Drill pipes are manufactured from upset pipe body ends and friction welded on tool joints. Tool joints are forged from chromium molybdenum alloy steel and uniformly quenched and tempered to obtain API Spec.7-1 properties. Pipe body standard grades, covered by API Spec. 5DP/ISO 11961 are: Grade E and High-strength grades X, G and S The type of upset are: EU, IU,IEU Tool Joint s are weld to the pipe body by friction welding. After welding, an area wider than the weld zone to tempering temperature. Each weld is 100% inspected according to API Spec. 5DP. Drill pipes are also provided with internal coating and the different types of box tool joint hardbanding.