Sucker Rods. General API and Premium Products

Sucker Rods General API and Premium Products Products and Services Tenaris manufactures special sucker rods to serve every need and provides complet...
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Sucker Rods General API and Premium Products

Products and Services Tenaris manufactures special sucker rods to serve every need and provides complete solutions, both for installation and technical support, necessary for running and operation.

Tenaris produces the whole API sucker rod line, which is complemented by its Premium products, in order to meet special service conditions such as high loads, corrosive environments, and for rod - tubing wear situations, among others. Manufacturing complies with API Specs 11B and Q1 for the facilities located in Villa Mercedes, Argentina and at the industrial complex of Moreira César, Brazil. Tenaris’s quality system has received both ISO 9000 and API 11 B certifications.

We also manufacture a special product line to work in Progressive Cavity Pumping (PCP).

In addition, Tenaris provides the technical support of metallographic laboratories specialized in failure analysis.

Tenaris offers, in addition to its products, associated services and specialized technical assistance through a qualified professional team that is available to give assistance during field operations.

Through the constant commitment to add value by means of logistic services, customers are provided with just-in-time integral material programs. Tenaris offers its clients services such as: new and used material stock management; well delivery and inspection; and used material recovery, through multiple Service Centers located all around the world.

Some of the technical services Tenaris offers to its clients include: string designs for beam pumping and progressive cavities (PCP) systems; failure analysis; intervention and field diagnosis integral analysis; optimization of field intervention level and special product development.

API and Premium Rods Both the API and Premium rod lines are manufactured under a strict quality assurance system in compliance with ISO 9000 standards and certified by API Q1.

Both API and Premium rods are manufactured from high quality steel bars. During the manufacturing process, all rods are straightened and inspected by non-destructive eddy current control equipment. This inspection controls 100% of raw materials in order to detect transversal and longitudinal discontinuities. Before forging, ends are heated in induction furnaces.

Then rods are full-length inspected and thermally treated in specially designed furnaces in order to obtain uniform mechanical and metallurgical properties all along the rod. Once rods have been thermally treated, they undergo a shot pinning process, where their external fibers are compressed and fatigue resistance is improved. Prior to machining, rod ends are inspected in a specially designed bench. Machining and threading processes are performed in state-of-the-art CNC (Computerized Numeric Control) equipment which results in high quality surface finishing of joint seals.

Threads are obtained by a cold rolled process, which ensures a higher fatigue resistance. Finally, prior to packing, rods are protected with an oil-soluble paint, avoiding rusting during transportation and storage. High strength Premium rods undergo different thermal treatments, according to the desired degree in order to achieve the metallographic structure and mechanical properties specified in each case.

API Sucker Rods Different grades and materials are offered, based on the load type and corrosive environment of the wells where they will be used.

Grade K Sucker Rod Designed for low and medium loads in corrosive wells, which are recommended to inhibit. Manufactured with AISI 4621 Mod steel.

Grade C Sucker Rod Designed to be used with low and medium loads in non-corrosive or effectively inhibited wells. Manufactured in 1530 Mod steel.

D Carbon Sucker Rod Grade Designed for moderate loads in non-corrosive or effectively inhibited wells. Manufactured in 1530 Mod micro-alloy steel.

KD Special Grade Sucker Rod (Critical Service) Designed for moderate to heavy loads in corrosive wells, however an effective inhibition program is recommended to minimize damaging effects. Manufactured in AISI 4320 Mod steel. D Alloy Grade Sucker Rod Designed for moderate to heavy loads in non-corrosive or effectively inhibited wells. Manufactured in AISI 4142 Mod steel.


Steel C Mn S P Si Ni Cr Mo V Nb Al Cu








1530 M 0.31-0.36 1.40-1.60 0.025 Mx. 0.025 Mx. 0.25-0.40 0.15 Mx. 0. 2 Mx. 0.05 Mx. 0.10-0.15

4621 M 0.18-0.25 0.70-1.00 0.025 Mx. 0.025 Mx. 0.15-0.30 1.65-2.00 0.3 Mx. 0.20-0.30

1530 M 0.31-0.36 1.40-1.60 0.025 Mx. 0.025 Mx. 0.25-0.40 0.15 Mx. 0. 2 Mx. 0.05 Mx. 0.10-0.15

4142 M 0.40-0.45 0.75-1.00 0.025 Mx. 0.025 Mx. 0.15-0.35 0.25 Mx. 0.80-1.10 0.15-0.25

4320 M 0.18-0.25 0.80-1.00 0.025 Mx. 0.025 Mx. 0.15-0.35 1.15-1.50 0.70-0.90 0.20-0.30 0.03-0.07

1530 M 0.31-0.36 1.40-1.60 0.025 Mx. 0.025 Mx. 0.25-0.40 0.15 Mx. 0. 2 Mx. 0.05 Mx. 0.10-0.15

4330 M 0.30-0.37 0.70-0.95 0.025 Mx. 0.025 Mx. 0.15-0.35 1.65-2.00 0.80-1.10 0.20-0.30 0.035-0.1000

0.01-0.04 0.25 Mx.

0.01-0.04 0.25 Mx.

0.01-0.04 0.25 Mx.

0.01-0.04 0.25 Mx.

0.01-0.05 0.25 Mx.

0.01-0.04 0.25 Mx.

0.01-0.06 0.25 Mx.

4138 M 0.38-0.43 1.10-1.40 0.025 Mx. 0.025 Mx. 0.20-0.40 0.30 Mx. 0.50-0.90 0.25-0.35 0.04-0.07 0.025-0.045 0.01-0.07 0.25 Mx.

60 Min. 90-115

60 Min. 90-115

85 Min. 115-140

85 Min. 115-140

85 Min. 115-140

115 Min. 140-160

115 Min. 140-160

115 Min. 138-155

Normalized Tempered


Normalized Forced Cooling

Normalized Tempered

Normalized Tempered

Normalized Sup. tempered

Normalized Tempered

Normalized Tempered








The values that appear in this brochure are for reference only, and Tenaris reserves the right to modify them according to internal specifications and without prior notice.

Premium Sucker Rods Higher mechanical strength: fit for high loads and deep wells.

Normalized and Tempered (UHS-NR) Ultra High Strength Sucker Rods The new UHS-NR sucker rod is one of the three alternatives available for the high strength line. It is manufactured in AISI 4330 Mod. alloyed steel, with normalized and tempered heat treatment above API standards, in order to reliably increase depths and flows using mechanical pumping.

Plus Sucker Rods The Plus sucker rod is another alternative for high loads. It’s a different product that presents the benefit of binary structure as a result of a case hardening heat treatment.

Designed to work with high loads in deep wells, effectively inhibited against corrosion.

After the high frecuency coil, quenching is performed via fast cooling with pressurized water. This process generates a binary structure, where the external case is hardened and the core remains not hardened.



As the external case has a lower density (martensite) than the core, it results in a permanent state of peripheral compression, which is the main factor for its high fatigue resistance. It is recommended for services in deep wells and heavy loads. In mild sweet (CO2) and sour (H2S) corrosive enviroment an effective inhibition program must be followed.


High Resistance, Critical Service Premium Rod It is the third alternative in high strength rods. The product is made of specially developed steel to provide the high mechanical strength required but reducing the susceptibility to sulphide stress cracking (SSC) embrittlement. SSC susceptibility is a phenomenon increasingly present in wells under secondary recovery by water injection due to the “souring reservoir” effect. It is an alloyed steel that includes chrome-molybdenum, among others, but is nickel free. The heat treatment normalized and tempered. It is recommended for service in deep wells with high loads and to improve performance inhibition is recommended.

Accessories A wide range of high quality products to complement the rod string. T and Spray Metal Couplings Couplings are manufactured from Tenaris seamless steel pipes. T and Spray Metal (SM) couplings combine top quality steel with a cold rolled thread that increases fatigue resistance. SM couplings provide higher abrasion and corrosion strength. Spray Metal is a superficial hardening process where a nickel, chrome, boron and silicon based powder is applied on the base metal and is later melt, creating a hard, dense and uniform surface with a very low friction factor and high corrosion strength.

Coupling machining is carried out in modern CNC (Computerized Numeric Control) lathes. For both types, combination couplings are produced for different diameters (subcouplings) and polished rod couplings.

Pony Rods Complying with the same quality requirements applied to rods, for each steel grade there are pony rods available in 2, 4, 6, 8 and 10 feet. Other lengths are also manufactured according to customer’s specifications.

High Resistance Premium Couplings This product was developed to address customer needs to solve the growing problem posed by fatigue failures in couplings, mainly in wells using high strength rods or SH (slim hole) couplings. Couplings manufactured from alloyed steel, quenched and tempered, were designed to work under very high loads during well service. We recommend their use along with High Strength Rods or Grade D as well.

Top quality couplings face finishing, rugosity, flatness and perpendicularity.

Products for Corrosive Services In addition to alloy steel, Tenaris provides metallic, epoxi and metallic+epoxi coated rods, specially designed for highly critical services in severely corrosive environments and high loads.

Special Products Some specific solutions have been developed, targeted to increase rod string duration and performance.

Centralizers are molded onto rods, with the necessary grip for decreasing the displacement probability, thus becoming a real tubing and rod protection. When combined with the use of rod rotators, they also permit an effective paraffin control. It has been proved that its use in wells significantly increases tubing and rod run life and reduces their wear, consequently diminishing pulling interventions and other operating costs.

Sinker Bars This element is necessary to maintain an optimized string design in order to avoid early rod failures. It is very effective to reduce pin and coupling failures generated due to the effect of string compression. Sinker bars are usually located at the end of the string, over the pump, in order to keep it fully under tensile loads during all pumping cycle. Their use minimizes compression generated on rods during the pumping down stroke. They are manufactured in compliance with API standards in 11/4" to 2" diameters in steel per customer request, with 65,000 psi to 90,000 psi tensile strength. A proprietary design alternative, 1 1/8" pin of 7/8" for 2 7/8" tubing wells for high rates volume is available.

Rod Guides Tenaris has a wide range of centralizers and materials, both for beam pumping and PC pumping, which provide an effective wear control.

Polished Rods With an optimal surface finishing to ensure an appropriate sealing in the stuffing box, Tenaris offers several types of low and medium alloy steel polished rods (AISI 1040, AISI 4140, AISI 4621). For corrosive services, stainless steel in AISI 304 and 316 series are available besides steels with hard chrome plated and Spray Metal coatings. All these variations are manufactured in 6 to 36 feet lengths and 1 1/4" and 1 1/2" diameters, according to customer’s specifications.

Polyamide injected centralizer fit for working in up to 80°C. Its improved geometry reduces flow loss and maximizes protection.

For Sucker Rod enquiries, please contact: Héctor Spira [email protected] (54) 3489 433602 tel (54) 3489 433227 fax Diego Olmos [email protected] (54) 2657 432106 (ext. 190) tel (54) 2657 430039 fax ARGENTINA Buenos Aires Rubén Fidalgo [email protected] (54) 11 4018 2582 tel (54) 11 4313 9280 fax BOLIVIA Santa Cruz de la Sierra Richard Mariaca [email protected] (591) 3 312 0603 tel (591) 3 312 0602 fax BRAZIL São Paulo José Rey Mendez [email protected] (55) 12 244 9001 tel (55) 12 244 9004 fax CANADA Calgary Aldo Gentile [email protected] (1) 403 514 2289 tel (1) 403 290 0619 fax CASPIAN SEA Aktau Carlos Covello [email protected] (994) 1292 1411 tel (994) 1297 1023 fax CHINA Beijing Alejandro de la Serna [email protected] (86) 10 6437 6744 tel (86) 10 6437 6746 fax

[email protected] Version 03 / April 2005.

COLOMBIA Bogotá Sergio Chamorro [email protected] (57) 1 636 2920 tel (57) 1 623 4780 fax ECUADOR Quito Marcelo Gonzalez Pondal mgon[email protected] (593) 2 298 6240 tel (593) 2 298 6250 fax EGYPT Cairo Hesham Reda [email protected] (20) 2 2686 991 tel (20) 2 2686 990 fax ITALY Bergamo Antonio Zizzo [email protected] (39) 035 560 3416 tel (39) 035 561 048 fax JAPAN Kanto Kyoichi Nagata [email protected] (81) 44 328 3430 tel (81) 44 328 0343 fax MEXICO Veracruz Pablo Gómez [email protected] (52) 229 989 1122 tel (52) 229 989 1119 fax

NIGERIA Port Harcourt Valerio Maussier [email protected] (234) 8461 0299 tel (234) 8461 1859 fax NORWAY Stavanger Arnt Oxaas [email protected] (47) 51 44 3440 tel (47) 51 44 3441 fax RUSSIA Moscow Alex Kondrashov [email protected] (7) 095 502 1630 tel (7) 095 937 6781 fax SINGAPORE Singapore Soon Tee Sia [email protected] (65) 6395 9000 tel (65) 6222 4090 fax UAE Dubai Luis Acevedo [email protected] (971) 4 2725 394 tel (971) 4 2725 392 fax UK Aberdeen Kazuo Yamazaki [email protected] (44) 1224 587 889 tel (44) 1224 587 422 fax

USA Houston Tony Alvarado [email protected] (1) 713 767 4477 tel (1) 713 767 4444 fax VENEZUELA Caracas Jorge Samitier [email protected] (58) 212 902 3969 tel (58) 212 902 3937 fax

Tenaris Marketing Communications Tenaris has produced this brochure for general information only and in no way assumes responsibility or liability for any loss, damage or injury resulting from the use of information and data herein.