The AlphaRod® Series was created to overcome more demanding requirements and offer a solution to fatigue and corrosion fatigue problems.

The new steel grades of the AlphaRod® generation were specially designed to widely exceed the performance of API and HS steel grades under critical conditions.

The total capacity of the sucker rod string depends mostly on the connection capacity.

Up to now, a high percentage of conventional pumping failures were traceable to this part of the rods. BlueRod® design, with a tapered trapezium thread profile and flank-to-flank contact, offers remarkable resistance for high loads, opening up a new frontier for oil pumping operations.

Tenaris R&D team developed the HolloRod™ Series, a technological breakthrough especially designed to resist high-torsion loads. 

The HolloRod™ reduce connection failure, tubing wear, and backspin effect, and enables injection of chemical corrosion

inhibitors or viscosity-reduction fluids down the inside of the rod. In the last years, the use of HolloRod™ was expanded to other applications like RP, deliquification, gas lift applications, heavy oil production, paraffin control and special operations.

X-Torque rods offer increased torque capacity by incorporating a modified pin end with a larger threaded section than conventional rods.

X-Torque rods are full-length normalized, air-quenched and tempered – producing a high-quality, refined and homogenized steel grain structure as a result. They are available in API and high-strength steel grades

ULTRA HIGH STRENGTH (UHS)

• Manufactured in AISI 4330 Mod. alloy steel, with nickel-chrome and molybdenum.
• Heat treatment: normalized and tempered.
• Recommended for non-corrosive wells with very high loads.

ULTRA HIGH STRENGTH SPECIAL (MMS)

• Manufactured in AISI 4138 Mod. steel to provide high mechanical strength. Produced from a chromium-molybdenum alloy steel with no nickel.
• Heat treatment: normalized and tempered.
• Recommended for deep well applications with high loads. Non-corrrosive wells.

GRADE C

Designed for wells with low and medium loads, non-corrosive or effectively inhibited. Manufactured in AISI 1530 Mod. steel (*).

GRADE K

Designed for low and medium loads in corrosive wells where inhibition is recommended. Manufactured in AISI 4621 Mod. steel.

GRADE D CARBON

Designed for non-corrosive or effectively

inhibited wells with moderate loads.

Manufactured in AISI 1530 Mod. steel(*).

GRADE D ALLOY

Designed for moderate to high loads in

non-corrosive or effectively inhibited wells. Manufactured in AISI 4142 steel.

GRADE KD

Designed for corrosive wells where inhibition is recommended, with moderate loads. Manufactured in AISI 4320 Mod. steel.

GRADE D SPECIAL

Designed for moderate to high loads in

non-corrosive or effectively inhibited wells. Manufactured in AISI 4330 Mod. steel.

(*) Only under special request.