Spheroidization Peeling optional Cold Pilgering optional Calibration Straightening NDT Beveling Marking Cutting optional Shipping to customer tailored logistics Hot and cold rolled tubes With over 60 years experience, Vallourec is a European leader i
The air-standard Brayton Cycle is the ideal cycle for a simple gas turbine and has been proposed as a direct cycle ... Reversible-adiabatic expansion in the turbine 3) Constant pressure heat rejection to the low temperature sink ... The efficiency is
Factors Affecting Selection of Tubes of Heat Exchanger ... PH In water containing air and less than 5 PH, ... Sea water 1000-3000
• Brazed Plate Heat exchanger • Piston pump • Electrical Oil preheaters • Pasteurizer. QUALITY WITHOUT COMPROM ISE HEAT TRANSFER TECHNICAL KEY DATA ... heat transfer rates which in turn lead to a high pressure drop. Acute corrugation angles are chose
They seal off the heat exchanger from the environment, without affecting heat transfer and pressure drop. The heat conductive pigmentation in the coating is oriented in such a way that it creates a very high chemical resistance at a low layer thickne
The concept of a spiral heat exchanger is as simple as it is sophisticated. Two or four long metal strips, onto which spacer studs are welded, are wound around
Heat Exchanger Analysis . By . David Vaughn. And. Tyler Ware . September 19, 2000. UTC Engr 435. DR.’s Henry, Cunningham, Jones. Introduction For this analysis a tube and shell heat exchanger was used in a variety of different ways to determine the c
constraint directly translates to increasing the overall heat transfer coefficient, U. The overall heat transfer ... Water 10,500 2,000 Vapor, Air 85 15 Condensation ... Sometimes increasing heat exchanger performance may not re sult from increases i
to assist you with your Alfa Laval Plate Heat Exchanger in various situations. We suggest that ... manuals for industrial, sanitary, spiral, alfa rex, brazed &
Heat Exchanger Efficiency ... Heat transfer coefficient as Default outer wall thermal condition. This condition allows you to define the ... 8 Select the Water Outlet Lid inner face (in contact with the fluid). The selected face appears in the Faces
Heat Exchanger Tubes
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Vallourec Heat Exchanger Tubes Quality and safety
A spirit of excellence Vallourec Heat Exchanger Tubes is the world leader in premium welded tubular solutions, serving energy, process and desalination markets. Our greatest pride and responsibility is to meet and exceed customer expectations. « Beyond the tube » translates our desire to offer every client the best solution beyond specifications with tailored products and services.
We provide the highest level of quality and safety. This level is guaranteed by our stringent control procedures and unchallenged technical experience. Every tube leaving our facilities is controlled, safe and traceable. Our best testimony of product quality is our long list of references worlwide.
Innovation Combining our force with the Vallourec Group, our R&D teams develop ambitious innovation and research programs to enhance the performance of our tubes in the toughest environments.
Premium at heart Our offer is based on an exclusive relationship and dialogue with our clients : every order is tailored to meet all its requirements. Our premium offers include a variety of specifications and services all along the value chain.
Close to market You can rely on our local sales force and our worldwide factory network in 5 countries on 3 continents.
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power plants delivered
Our tubes in power plant applications
nuclear MSRs delivered
Tubes for every heat exchanger
Nuclear Power Plant More than
We supply welded tubes for heat exchangers in powergen (nuclear and thermal), desalination and process applications. Our high-performance welded tubes are used in Condensers, high-pressure and low-pressure FeedWater Heaters as well as MSRs (moisture separator steam reheaters).
desalination plants delivered
Tough, reliable and durable Vallourec Heat Exchanger Tubes has extended its expertise to high-performance products for the harshest environments. We can provide tubes that sustain seawater, brackish water or corrosive products with outstanding durability and reliability.
World leader in powergen desalination & process Condenser LP & HP FeedWater Heaters
Thermal Power Plant
LP & HP FeedWater Heaters
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Straight & smooth
Premium titanium & stainless steel welded tubes
Products Welded tubes, tailored to your needs
The weld : a proven reliability
Vallourec Heat Exchanger Tubes provides a wide range of grades and sizes: titanium, austenitic stainless steel, ferritic stainless steel (TP439 used for MSR and FWH HP) and super stainless steel. Our tubes can be straight, bent, smooth, finned or corrugated. Each order is unique and every tube delivered has been defined, designed, produced, inspected and packaged.
Tube welding technology guarantees the best dimensional characteristics for your tubes. The thickness is constant and high performance thin walls are possible. The diameter and weld bead thickness are always under control as well as every metallurgical characteristic.
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Titanium The superior solution
Titanium is becoming the most efficient and cost-effective material for an increasing number of applications. It offers unmatched corrosion resistance combined with high mechanical properties. Moreover, our titanium welded tubes can be manufactured in very thin-wall gauges saving both on cost and weight.
World leader in titanium tubes, Vallourec Heat Exchanger Tubes has the experience and expertise to bring the highest level of technical assistance, to help integrate titanium tubes within customer’s design. In addition we have secured access to superior titanium strip, with a capacity to meet the needs of the market.
Proven reliability Zero corrosion
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Manufacturing process Expert manufacturing process Tube mill strip is uncoiled and fed through a multiple stand forming mill which shapes the strip into a tube. The tube is welded without filler metal in an inert atmosphere using a non-consumable tungsten electrode (T.I.G. welding) or laser technology. Dimensional properties are achieved when the as-welded tube passes through a final, multi-stage sizing mill. Mechanical and thermal stresses are relieved by in-line induction heating under inert atmosphere. Afterwards, the tube is straightened, 100% Eddy Current (EC) tested, line marked, then automatically cut. Finished tube ends are deburred. The product
is subsequently dimensionally inspected, tested through NDT controls (pneumatic testing, EC inspection and Ultrasonic Testing) and packaged to customer specification.
Excellence in every plant Our manufacturing process is designed to guarantee the highest level of quality and safety for tubes, in accordance with customer specifications, and beyond. We believe in constantly improving
our factories and production methods. Our equipment is stateof-the-art and we implement stringent maintenance procedures to ensure the highest quality of every tube coming off of our lines. Every Vallourec Heat Exchanger Tubes factory shares the same values and practices, ensuring the same excellence everywhere, both in the production process and plant management.
Over 30 state-of-the-art welding lines in the world
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Process control Mastering the process control
Non Destructive Testing (NDT)
Leaders in ultrasonic testing
With over 30 years of experience and continuous progress Vallourec Heat Exchanger Tubes masters the entire welding process and provides the highest level of quality and safety in the market.
NDT is at the heart of our quality process and is the result of an unmatched experience of welded tubing solutions. Vallourec Heat Exchanger Tubes has always been a pioneer in NDT and provides high-end controls including ultrasonic, Eddy Current, pneumatic and hydraulic testings.
Vallourec Heat Exchanger Tubes was the first company in the world to develop ultrasonic testing on welded tubes, as early as in 1977, exceeding the ASTM B 338 standard that only required Eddy Current inspection. Thanks to our research team, we have improved the ultrasonic testing on welded tubes and can offer it as standard for all demanding customer.
EDDY CURENT TESTING
PNEUMATIC TESTING AIR/AIR
PNEUMATIC TESTING AIRUNDER WATER
Certified quality and safety
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Heat exchange enhancement
Vallourec Heat Exchanger Tubes constantly develops its technology to procure thinner wall and enhanced surface tube. Finning and corrugation improve heat transfer and lower cost and size of the heat exchanger.
Seeking optimal performance for a better cost of ownership
We provide for example Valfin®, ferritic finned tubes specially designed for MSR. The ferritic material, TP439 is best suited for the high temperature of the MSR. The finning can increase surface exchange area by at least 3 times.
Innovation The power of Vallourec research Vallourec Heat Exchanger Tubes endeavors to develop research and create innovative solutions for its customers with the combined power of the Vallourec group and its own research facilities. Our R&D teams deploy extensive research programs in two directions: To enhance the performance and longevity of our tubes in the toughest environments. To optimize the production process, including non destructive testing methods and premium packaging solutions. We seek to design and produce uniquely tailored products for the most demanding applications in the world. Our most qualified engineers and experts are here for you : feel free to share your technical challenge with us!
Increase your performance Lower your costs Save energy
We also provide Fine-Fin®, a finned tubular solution which yields numerous benefits for shell and tube heat exchangers including reduced size and cost for new equipment, increased performance of existing equipment, and availability in corrosion resistant materials such as titanium and duplex stainless steel.
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Optimized logistics Packaging solutions On site technical assistance Premium service Creative solutions
Exclusive Valpack® offer
Client proximity is our pride. Vallourec Heat Exchanger Tubes assists its customers in a creative way to support their most critical projects. We can help design a project and recommend the most adapted technical specifications and best available services. For example, we can offer exclusive services through long-term agreements and collaborative planning: secure price and availability of raw material, optimize logistics or deliver production flexibility. In other instances, for your most demanding projects (long tubes, stringent transport and storage conditions or specific tube installation), we can develop and produce customized packaging solutions. Our ultimate goal is to deliver you the best service to lower your total cost of ownership.
On-site operations are tricky and involve a great number of teams and operators. We can make your life easier: ask about our on-site services. We can ease and secure deliveries and supervise handling, tubing and retubing operations. Vallourec Heat Exchanger Tubes can bring you unmatched on-site assistance for optimal quality. Our services are tailored to your every specific need.
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Typical standards and materials
VALLOUREC STAINLESS STEELS
A 240 TP 444 (S44400)
A 268 - A 803 TP 439 (S43035)
A 268 - A 803 (S44735)
1.4592 AL 29-4C®
A 789 - A 790 (S32304)
A 789 - A 790 (S31803)
Typical chemical requirements in % according to ASTM
Condensers Desalination Chemical and Petrochemical Automotive Others
Coefficient of expansion 10ˉ6 /°C(20 °C→) - 10ˉ6/°F (68 °F→)
AL 29-4C® is registered trademarks of ATI Properties, Inc., an affiliate of Allegheny Ludlum. LDX 2101®, 254 SMO®, 153MA® and 253MA® are registered trademarks of Outokumpu. (1) Oil and gas applications, (2) Mechanical applications, (3) Annealed, (4) 690 MPa (100 ksi) if OD ≤ 25 mm (1 in.), (5) 450 MPa (65 ksi) if OD ≤ 25 mm (1 in.)
35 35 35
24 20 18 20 15 18 20
45 26 30 17.3 30 17.3 121 70
8.05 0.29 7.97 0.29 7.8 0.28
8.94 0.31 8.94 0.31 8.94 0.31 8.67 0.30
9.1 5.05 17 9.4 16 8.9 16 8.9 _
_ _ _ _
130 18.8 149 21.6 149 21.6 115 16.67
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Titanium and Stainless Steel Welded Tubes
ValBriteTM Premium Stainless Steel Welded Tube Solution for Brackish and Sea Water
ValBriteTM production lines are specifically designed for welding superferritic, superaustenitic and superduplex stainless steel tubing. The advanced use of TIG or laser welding in combination with the bright annealing process and stringent NDE testing insure the highest quality and reliability of ValBriteTM. ValBriteTM tubes are eddy current and air pressure differential tested. Ultrasonic testing is available as a recommended option. A specific ValBriteTM datasheet is available upon request.
Outside Diameter (OD)
Valfin® Integrally Finned Welded Tubes Grades 439 L VALFIN® 19 ± 1.0 FINS / INCH Height of fin h: 1.5 mm - 0.059 in ± 10% Thickness at 1/2 height: 0.366 mm - 0.014 in ± 10% Plain section
Average Wall Thickness (WT) 0,0
0.020 0.028 0.035
30 27 24
12.7 mm ≤ OD ≤ 73 mm (0.5”) (2.875”)
12.7mm ≤ OD ≤ 46.2 mm (0.5”) (1.82”)
0.4 mm ≤ WT ≤ 2.77 mm (0.015”) (0.11”)
0.4 mm ≤ WT ≤ 3.05 mm (0.015”) (0.12”)
mm inches BWG
Finned section - Mean values
Se Outer surface
(kg / m) (lbs / ft)
(m2 / m) (m2 / m) (sq.ft / ft) (sq.ft / ft)
19.05 16.05 1.16 .750 .632 .046
19.050. 1.65/1.75 750 .065/.069
Sp Projected surface
Internal cross section
Si Mean Internal Se / Si weight surface
(mm2) (sq. in.)
(m2 / m) (sq.ft / ft)
0.0173 13.95 .056 .549
(kg / m) (lbs / ft)
Other dimensions can be considered upon request
Length and Bending Capabilities VALFIN® 27 ± 1.0 FINS / INCH Height of fin h: 1.27 mm - 0.050 in ± 10% Thickness at 1/2 height: 0.292 mm - 0.011 in ± 10% MAXIMUM AVAILABLE LENGTH
BENDING CAPABILITIES R min R max
For straight tubes: 25 m - 82 ft
1.5 OD for 7.5 < OD/WT < 30
For bent tubes : Developed: 42 m - 151 ft Straight leg: 22 m - 72 ft
OD x (0.17 OD/ WT - 3.5) for 30 < OD/WT < 38
Titanium U-bent tubes can be considered upon request. OD: Outside Diameter WT: Average Wall Thickness R: Bending Radius
1 150 mm (U-shapes: 960 mm)
TUBE OUT-OF-ROUNDNESS IN THE BENT PART 8 % maxi for R ≥ 100 mm 10 % maxi for 2 x OD ≤ R < 100 m 12 % maxi for 1.5 x OD < R < 2 x OD
Finned section - Mean values
Se Outer surface
(kg / m) (lbs / ft)
(m2 / m) (m2 / m) (sq.ft / ft) (sq.ft / ft)
19.05 16.51 1.11 .750 .650 .044
22.22 19.68 1.24 .874 .774 .048
19.050. 1.65/1.75 750 .065/.069 22.22 .874
Other dimensions and profiles can be manufactured upon request.