API Sucker Rods - Tenaris

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

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.

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.
MECHANICAL PROPERTIES AND CHEMICAL COMPOSITION
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.
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.
API GRADE
SPECIAL GRADES
C GRADE K GRADE D GRADE PREMIUM ROD
C K DCARBON DALLOY KDSPECIAL PLUS UHS-NR SPECIAL
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 0.50-0.90
Mo 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
MECHANICAL PROPERTIES
0.25 Mx. 0.25 Mx. 0.25 Mx. 0.25 Mx. 0.25 Mx. 0.25 Mx. 0.25 Mx. 0.25 Mx.
YS (Ksi) 60 Min. 60 Min. 85 Min. 85 Min. 85 Min. 115 Min. 115 Min. 115 Min.
UTS (Ksi)
HEAT TREAMENT
90-115 90-115 115-140 115-140 115-140 140-160 140-160 138-155
Normalized Normalized Normalized Normalized Normalized Normalized Normalized Normalized
Tempered Forced Cooling Tempered Tempered Sup. tempered Tempered 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.
Designed to work with high loads in deep wells, effectively
inhibited against corrosion.
MODIFIED GOODMAN DIAGRAM
MAXIMUM
ALLOWABLE
STRESS, KSI
MINIMUM STRESS, KSI
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.
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 (CO 2) and sour
(H 2S) 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.
▲ Top quality couplings face finishing, rugosity, flatness
and perpendicularity.
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.
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.
Rod Guides
Tenaris has a wide range of centralizers and materials, both
for beam pumping and PC pumping, which provide an
effective 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.
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.
▲
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
hspira@tenaris.com
(54) 3489 433602 tel
(54) 3489 433227 fax
Diego Olmos
dolmos@siderca.com
(54) 2657 432106 (ext. 190) tel
(54) 2657 430039 fax
ARGENTINA
Buenos Aires
Rubén Fidalgo
rfidalgo@siderca.com
(54) 11 4018 2582 tel
(54) 11 4313 9280 fax
BOLIVIA
Santa Cruz de la Sierra
Richard Mariaca
rmariaca@tenaris.com
(591) 3 312 0603 tel
(591) 3 312 0602 fax
BRAZIL
São Paulo
José Rey Mendez
jreymendez@confab.com.br
(55) 12 244 9001 tel
(55) 12 244 9004 fax
CANADA
Calgary
Aldo Gentile
agentile@tenaris.com
(1) 403 514 2289 tel
(1) 403 290 0619 fax
CASPIAN SEA
Aktau
Carlos Covello
ccovello@tenaris.com
(994) 1292 1411 tel
(994) 1297 1023 fax
CHINA
Beijing
Alejandro de la Serna
adelaserna@tenaris.com
(86) 10 6437 6744 tel
(86) 10 6437 6746 fax
www.tenaris.com/oilfield
COLOMBIA
Bogotá
Sergio Chamorro
schamorro@tenaris.com
(57) 1 636 2920 tel
(57) 1 623 4780 fax
ECUADOR
Quito
Marcelo Gonzalez Pondal
mgonzalezpondal@tenaris.com
(593) 2 298 6240 tel
(593) 2 298 6250 fax
EGYPT
Cairo
Hesham Reda
hreda@tenaris.com
(20) 2 2686 991 tel
(20) 2 2686 990 fax
ITALY
Bergamo
Antonio Zizzo
dalazi@dalmine.it
(39) 035 560 3416 tel
(39) 035 561 048 fax
JAPAN
Kanto
Kyoichi Nagata
knagata@tenaris.com
(81) 44 328 3430 tel
(81) 44 328 0343 fax
MEXICO
Veracruz
Pablo Gómez
pgomezr@tamsa.com.mx
(52) 229 989 1122 tel
(52) 229 989 1119 fax
NIGERIA
Port Harcourt
Valerio Maussier
vmaussier@tenaris.com
(234) 8461 0299 tel
(234) 8461 1859 fax
NORWAY
Stavanger
Arnt Oxaas
aoxaas@tenaris.com
(47) 51 44 3440 tel
(47) 51 44 3441 fax
RUSSIA
Moscow
Alex Kondrashov
akondrashov@tenaris.com
(7) 095 502 1630 tel
(7) 095 937 6781 fax
SINGAPORE
Singapore
Soon Tee Sia
stsia@tenaris.com
(65) 6395 9000 tel
(65) 6222 4090 fax
UAE
Dubai
Luis Acevedo
lacevedo@tenaris.com
(971) 4 2725 394 tel
(971) 4 2725 392 fax
UK
Aberdeen
Kazuo Yamazaki
kyamazaki@tenaris.com
(44) 1224 587 889 tel
(44) 1224 587 422 fax
USA
Houston
Tony Alvarado
talvarado@tenaris.com
(1) 713 767 4477 tel
(1) 713 767 4444 fax
VENEZUELA
Caracas
Jorge Samitier
jsamitier@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.