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Sucker RodsGeneral API and Premium Products

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Tenaris produces the whole

API sucker rod line, which is

complemented by its Premium

products, in order to meet spe-

cial service conditions such as

high loads, corrosive environ-ments, 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 spe-

cial product line to work in

Progressive Cavity Pumping

(PCP).

Tenaris offers, in addition toits products, associated services

and specialized technical

assistance through a qualified

professional team that is

available to give assistance

during field operations.

Some of the technical services

Tenaris offers to its clients

include: string designs for

beam pumping and progressi-

ve cavities (PCP) systems;

failure analysis; intervention

and field diagnosis integral

analysis; optimization of field

intervention level and special

product development.

In addition, Tenaris provides

the technical support of 

metallographic laboratories

specialized in failure analysis.

Through the constant com-mitment 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 ma-

nagement; well delivery and

inspection; and used material

recovery, through multiple

Service Centers located all

around the world.

Products and ServicesTenaris manufactures special sucker rods to serve every need and provides

complete solutions, both for installation and technical support, necessary

for running and operation.

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API and Premium RodsBoth 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 straigh-tened 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 allalong the rod.

Once rods have been ther-

mally treated, they undergo a

shot pinning process, where

their external fibers are com-

pressed and fatigue resistance

is improved. Prior to machi-

ning, rod ends are inspected

in a specially designed bench.

Machining and threading

processes are performed in

state-of-the-art CNC (Com-

puterized 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 pro-

perties specified in each case.

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MECHANICAL PROPERTIES AND CHEMICAL COMPOSITION

API GRADE

C GRADE K GRADE D GRADE PREMIUM ROD

C K DCARBON DALLOY KDSPECIAL PLUS UHS-NR SPECIAL

SPECIAL GRADES

HEAT TREAMENT

Grade C Sucker Rod

Designed to be used with low

and medium loads in non-co-

rrosive or effectively inhibited

wells. Manufactured in 1530

Mod steel.

Grade K Sucker Rod

Designed for low and medium

loads in corrosive wells, which

are recommended to inhibit.

Manufactured with AISI 4621

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 minimizedamaging effects. Manufactu-

red in AISI 4320 Mod steel.

D Alloy Grade Sucker Rod

Designed for moderate to heavy

loads in non-corrosive or effec-

tively inhibited wells. Manufac-

tured in AISI 4142 Mod steel.

YS (Ksi) 60 Min. 60 Min. 85 Min. 85 Min. 85 Min. 115 Min. 115 Min. 115 Min.

UTS (Ksi) 90-115 90-115 115-140 115-140 115-140 140-160 140-160 138-155

Normalized Normalized Normalized Normal ized Normal ized Normalized Normal ized Normalized

Tempered Forced Cooling Tempered Tempered Sup. tempered Tempered Tempered

MECHANICAL PROPERTIES

API Sucker Rods

Steel 1530 M 4621 M 1530 M 4142 M 4320 M 1530 M 4330 M 4138 M

C 0.31-0.36 0.18-0.25 0.31-0.36 0.40-0.45 0.18-0.25 0.31-0.36 0.30-0.37 0.38-0.43

Mn 1.40-1.60 0.70-1.00 1.40-1.60 0.75-1.00 0.80-1.00 1.40-1.60 0.70-0.95 1.10-1.40

S 0.025 Mx. 0.025 Mx. 0.025 Mx. 0.025 Mx. 0.025 Mx. 0.025 Mx. 0.025 Mx. 0.025 Mx.

P 0.025 Mx. 0.025 Mx. 0.025 Mx. 0.025 Mx. 0.025 Mx. 0.025 Mx. 0.025 Mx. 0.025 Mx.

Si 0.25-0.40 0.15-0.30 0.25-0.40 0.15-0.35 0.15-0.35 0.25-0.40 0.15-0.35 0.20-0.40

Ni 0.15 Mx. 1.65-2.00 0.15 Mx. 0.25 Mx. 1.15-1.50 0.15 Mx. 1.65-2.00 0.30 Mx.

Cr 0. 2 Mx. 0.3 Mx. 0. 2 Mx. 0.80-1.10 0.70-0.90 0. 2 Mx. 0.80-1.10 0.50-0.90Mo 0.05 Mx. 0.20-0.30 0.05 Mx. 0.15-0.25 0.20-0.30 0.05 Mx. 0.20-0.30 0.25-0.35

V 0.10-0.15 0.10-0.15 0.03-0.07 0.10-0.15 0.035-0.1000 0.04-0.07

Nb 0.025-0.045

Al 0.01-0.04 0.01-0.04 0.01-0.04 0.01-0.04 0.01-0.05 0.01-0.04 0.01-0.06 0.01-0.07

Cu 0.25 Mx. 0.25 Mx. 0.25 Mx. 0.25 Mx. 0.25 Mx. 0.25 Mx. 0.25 Mx. 0.25 Mx.

Different grades and

materials are offered,

based on the load type

and corrosive environ-

ment of the wells where

they will be used.

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.

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Normalized and Tempered (UHS-NR) Ultra HighStrength 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.

Designed to work with high loads in deep wells, effectively

inhibited against corrosion.

MODIFIED GOODMAN DIAGRAM

   M   A   X   I   M   U   M

   A   L   L   O   W   A   B   L   E

   S   T   R   E   S   S ,   K   S   I

MINIMUM STRESS, KSI

Higher mechanical strength: fit for high loads

and deep wells.

PremiumSucker Rods

High Resistance, CriticalService Premium Rod

It is the third alternative in high

strength rods. The product is

made of specially developed

steel to provide the high me-

chanical strength required but

reducing the susceptibility to

sulphide stress cracking (SSC)

embrittlement.

SSC susceptibility is a pheno-

menon increasingly present inwells under secondary reco-

very 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.

Plus Sucker RodsThe 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.

After the high frecuency coil,

quenching is performed via fast

cooling with pressurized water.

This process generates a binary

structure, where the externalcase 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 fati-

gue 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.

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A wide range of high quality products to complement

the rod string.

Accessories

T and Spray Metal

Couplings

Couplings are manufacturedfrom 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, boronand 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 (ComputerizedNumeric Control) lathes.

For both types, combination

couplings are produced for

different diameters (subcou-

plings) and polished rod

couplings.

Pony Rods

Complying with the same

quality requirements appliedto 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 incouplings, 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.

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.

Productsfor CorrosiveServices

▲ Top quality couplings face finishing, rugosity, flatness

and perpendicularity.

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Rod Guides

Tenaris has a wide range of centralizers and materials, both

for beam pumping and PC pumping, which provide aneffective wear control.

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.

Polyamide injected centralizer fit for working in up to 80°C.

Its improved geometry reduces flow loss and maximizes protection.

     ▲

Polished Rods

With an optimal surface

finishing to ensure anappropriate 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.

Sinker Bars

This element is necessary to

maintain an optimized stringdesign 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 gene-

rated on rods during the

pumping down stroke.

They are manufactured in

compliance with API stan-

dards in 11/4" to 2" diameters

in steel per customer request,

with 65,000 psi to 90,000 psi

tensile strength. A proprie-

tary design alternative, 1 1/8"

pin of 7/8" for 2 7/8" tubing

wells for high rates volume is

available.

Some specific solutions have been developed, targeted

to increase rod string duration and performance.

Special Products

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ARGENTINABuenos AiresRubén Fidalgorfidalgo@siderca.com(54) 11 4018 2582 tel(54) 11 4313 9280 fax

BOLIVIASanta Cruz de la SierraRichard Mariacarmariaca@tenaris.com(591) 3 312 0603 tel(591) 3 312 0602 fax

BRAZILSão Paulo

 José Rey Mendezjreymendez@confab.com.br(55) 12 244 9001 tel

(55) 12 244 9004 faxCANADACalgaryAldo Gentileagentile@tenaris.com(1) 403 514 2289 tel(1) 403 290 0619 fax

CASPIAN SEAAktauCarlos Covelloccovello@tenaris.com(994) 1292 1411 tel(994) 1297 1023 fax

CHINABeijingAlejandro de la Sernaadelaserna@tenaris.com

(86) 10 6437 6744 tel(86) 10 6437 6746 fax

COLOMBIABogotáSergio Chamorroschamorro@tenaris.com(57) 1 636 2920 tel(57) 1 623 4780 fax

ECUADORQuitoMarcelo Gonzalez Pondalmgonzalezpondal@tenaris.com(593) 2 298 6240 tel(593) 2 298 6250 fax

EGYPTCairoHesham Redahreda@tenaris.com(20) 2 2686 991 tel

(20) 2 2686 990 faxITALYBergamoAntonio Zizzodalazi@dalmine.it(39) 035 560 3416 tel(39) 035 561 048 fax

JAPANKantoKyoichi Nagataknagata@tenaris.com(81) 44 328 3430 tel(81) 44 328 0343 fax

MEXICOVeracruzPablo Gómezpgomezr@tamsa.com.mx

(52) 229 989 1122 tel(52) 229 989 1119 fax

NIGERIAPort HarcourtValerio Maussiervmaussier@tenaris.com(234) 8461 0299 tel(234) 8461 1859 fax

NORWAYStavangerArnt Oxaasaoxaas@tenaris.com(47) 51 44 3440 tel(47) 51 44 3441 fax

RUSSIAMoscowAlex Kondrashovakondrashov@tenaris.com(7) 095 502 1630 tel

(7) 095 937 6781 faxSINGAPORESingaporeSoon Tee Siastsia@tenaris.com(65) 6395 9000 tel(65) 6222 4090 fax

UAEDubaiLuis Acevedolacevedo@tenaris.com(971) 4 2725 394 tel(971) 4 2725 392 fax

UKAberdeenKazuo Yamazakikyamazaki@tenaris.com

(44) 1224 587 889 tel(44) 1224 587 422 fax

USAHoustonTony Alvaradotalvarado@tenaris.com(1) 713 767 4477 tel(1) 713 767 4444 fax

VENEZUELACaracas

 Jorge Samitierjsamitier@tenaris.com(58) 212 902 3969 tel(58) 212 902 3937 fax

oilfield@tenaris.com Tenaris Marketing Communications

Version 03 / April 2005. 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.

www.tenaris.com/oilfield

For Sucker Rod enquiries,please contact:

Héctor Spirahspira@tenaris.com(54) 3489 433602 tel(54) 3489 433227 fax

Diego Olmosdolmos@siderca.com(54) 2657 432106 (ext. 190) tel(54) 2657 430039 fax