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Air Preheater Tubes

Home 9 PIPES 9 AIR PREHEATER 9 AIR PREHEATER TUBES
AIR PREHEATER TUBES

Product Specification

Chemical Composition

Mechanical Composition

Equivalent Grades

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Detailed Information:

RatnaExports is owned manufacturer, distributor, and exporter of Air Pre Heater Tubes. We utilise the latest equipment to fabricate these tubes. Our clients are a wide range of sizes, types, and thicknesses. We can also provide customised specifications per their requirements and needs.

As a result of the air preheater recovering heat from the boiler flue gas, the boiler becomes more efficient by minimising the amount of usable heat lost in the flue gas. Shell and tube heat exchangers (Air Preheater Tubes) preheat air before it enters the boiler or furnaces/kilns for fuel combustion. 

As well as complying with tensile strength, yield strength, hardness, and elongation requirements, the Air Preheater extracts waste heat from the flue gases leaving the boiler.

It is necessary to note that the Air Preheater Tubes-ERW tubes are either hot-rolled or cold-drawn tubes, both with seamless or welded ends. Depending on the boiler design, their size, and grade will vary. The kind of fuel, temperature, pressure, and amount of steam required determines this.

The power plant and process industries use air preheater ERW tubes. These include the Chemical, Sugar, Power Plant, Steel, Cooling Tower, Super Heater, Paper, and Air heater.

As part of our commitment to quality, we also have prioritized product testing in the industry. It ensures that our products meet or exceed industry standards. In addition to PMI tests, raw material tests, intergranular corrosion tests, pitting resistance tests, flaring/flattening tests, third-party inspections, and other inspections, we conduct several tests on our Air Preheater Tubes.

Air Preheater Tubes Specification

Thickness : 0-10mm
Length: 5-15 m
Material: CORTEN STEEL
Features: High-Quality
Finishing: Polished

 

Air Preheater Tubes Properties

 

Specification Type Grade Chemical Composition% Mechanical Properties Remarks Impact /Hardness
Yield Strength Tensile Strength % Elongation
Min. Max. Min. Max.
C Mn. P S SI
Min. Max. Min. Max. Min. Max. Min. Max. PSI MPa PSI MPa PSI MPa PSI MPa
IS: 2416 Pt-IV ERW 310 0.08 0.25 0.35 1.4 0.05 0.05 0.35 – 152 – – – 304 – 402 (100-RM / 9.81) /C, C=2.20, RM=Measured T.S
360 0.08 0.25 0.35 1.4 0.05 0.05 0.35 – 177 – – – 353 – 451
440 0.08 0.25 0.35 1.4 0.05 0.05 0.35 – 201 – – – 402 – 500
IS:11714 Pt-III ERW – 0.06 0.18 0.27 0.63 0.048 0.058 – – – – – – – – – – – 72 HRB(Max.)
IS : 1914 Pt-IV ERW 320 0.08 0.25 0.35 1.4 0.05 0.05 – 0.35 – 176 – – – 320 – 480 (100-RM / 9.81) /C, C=2.20, RM=Measured T.S –
360 0.08 0.25 0.35 1.4 0.05 0.05 – 0.35 – 198 – – – 360 – 500 –
440 0.08 0.25 0.35 1.4 0.05 0.05 – 0.35 – 242 – – – 440 – 580 –
BS:3059 Pt-I ERW 320 – 0.16 0.3 0.7 0.04 0.04 – 0.35 – 195 – – – 320 – 480 25 –
BS:3059 Pt-II ERW 360 – 0.17 0.4 0.8 0.035 0.035 0.1 0.35 – 235 – – – 360 – 500 24 –
440 0.12 0.18 0.9 1.2 0.035 0.035 0.1 0.35 – 245 – – – 480 – 580 21 –
BS:6323 Pt-V ERW ERW-1 – 0.13 – 0.6 0.05 0.05 – – – 200 – – – 300 – – D/a< 20 D/a >20 –
ERW-2 – 0.16 – 0.7 0.05 0.05 – – – 250 – – – 340 – – 10 20 –
ERW-3 – 0.2 – 0.9 0.05 0.05 – 0.35 – 300 – – – 400 – – 8 15 –
7 12 –
ASTM-A-178 ERW A 0.06 0.18 0.27 0.63 0.035 0.035 – – 26,000 180 – – 47,000 325 – – 35 –
C – 0.35 – 0.8 0.035 0.035 – – 37,000 255 – – 60,000 415 – – 30 –
ASTM-A-214 ERW – – 0.18 0.27 0.63 0.035 0.035 – – – – – – – – – – 72 HRB(Max.)
ASTM A333 & A334 ERW 1 – 0.3 0.4 1.06 0.025 0.025 – – 30,000 205 – – 55,000 380 – – 35 18 J,
85 HRB (Max.)
6 – 0.3 0.29 1.06 0.025 0.025 0.1 – 35,000 240 – – 60,000 415 – – 30 18 J,
90 HRB (Max.)

Air Preheater Tubes Types

Air Heater Tubes

Air Preheater Tubes

Primary Air Heater Tubes

Finned Tube Air Heater

Corten Steel Air Heater Tubes

Air Preheater Tubes

Erw Air Preheater Tubes

Boiler Air Heater Tube Material

 

Air Preheater Tubes Grades

  • (Pt-I & II) of BS 3059
  • (Pt-V) BS: 6323
  • ANSI, A-178/A-214/A-333/A-334
  • (Pt-IV) IS: 1914
  • (Pt-IV) IS: 2416
  • (Pt-III) of IS: 11714

Air Preheater Tubes Features

  • Resistant to corrosion
  • Highly durable material
  • Free of leaks
  • Resistant to heat

Air Preheater Tubes Stock Range

 

Od/THK 0.9 1 1.22 1.42 1.5 1.63 1.85 2.03 2.34 2.64 2.95 3.25 3.66 4.06 4.65 5.5 6
15.88 0.332 0.367 0.441 0.506 0.532 0.573
19.05 0.403 0.445 0.536 0.617 0.649 0.700 0.785 0.852 0.964
22.2 0.473 0.523 0.631 0.728 0.766 0.827 0.928 1.010 1.145
23.42 0.500 0.553 0.668 0.770 0.811 0.876 0.984 1.095 1.216 1.482 1.633
25.4 0.544 0.602 0.728 0.842 0.884 0.956 1.074 1.250 1.244 1.585 1.749
28.58 0.614 0.680 0.823 0.951 1.002 1.083 1.220 1.329 1.422 1.689 1.865
31.75 0.685 0.758 0.919 1.062 1.119 1.211 1.364 1.488 1.697 1.895 2.095 2.284
33.7 0.728 0.806 0.977 1.130 1.191 1.289 1.453 1.585 1.810 2.022 2.237 2.441 2.711
34.93 0.756 0.837 1.015 1.174 1.237 1.339 1.510 1.648 1.882 2.104 2.328 2.541 2.824
38.1 0.826 0.915 1.110 1.285 1.354 1.466 1.654 1.806 2.064 2.309 2.557 2.793 3.109 3.408
40 0.962 1.167 1.351 1.424 1.542 1.741 1.901 2.173 2.432 2.695 2.946 3.280 3.599
41.28 0.993 1.205 1.396 1.472 1.594 1.799 1.965 2.247 2.516 2.789 3.048 3.396 3.727
44.45 1.072 1.301 1.507 1.589 1.721 1.944 2.124 2.430 2.722 3.019 3.302 3.682 4.044 4.564
49 1.438 1.666 1.757 1.904 2.151 2.351 2.693 3.018 3.350 3.667 4.092 4.500
50.8 1.228 1.492 1.729 1.824 1.977 2.233 2.442 2.797 3.136 3.481 3.811 3.255 4.680 5.292 6.144
57.15 2.059 2.232 2.523 2.759 3.163 3.549 3.943 4.320 4.828 5.316 6.020 7.006
60.3 2.358 2.667 2.917 3.345 3.754 4.172 4.573 5.112 5.631
63.5 2.294 2.487 2.813 3.077 3.529 3.962 4.405 4.829 5.401 5.951 6.749 7.867 8.508
65 2.547 2.881 3.152 3.616 4.060 4.514 4.949 5.537 6.102
69.85 2.528 2.742 3.102 3.395 3.896 3.376 4.867 5.338 5.974 6.587 7.477 8.728 9.448
76.2 2.763 2.998 3.392 3.713 4.262 4.789 5.329 5.847 6.548 7.223 8.205 9.590 10.387
81.2 2.948 3.199 3.620 3.963 4.551 5.115 5.693 6.248 6.999 7.724 8.778 10.268 11.127
82.5 2.996 3.251 3.680 4.029 4.626 5.199 5.787 6.352 7.116 7.854 8.928 10.444 11.320
88.9 3.223 3.508 3.972 4.349 4.995 5.616 6.253 6.865 7.694 8.495 9.661 11.312 12.267
101.3 4.019 4.551 4.985 5.728 6.443 7.177 7.883 8.840 9.766 11.118 13.035 14.146
114.3 4.529 5.130 5.621 6.461 7.270 8.101 8.901 9.986 11.038 12.574 14.757 16.025

Air Preheater Tubes Sizes

  • The outside diameter ranges from 33.40 mm (1″) to 355.60 mm (14″).
  • Wall thickness: 2.03mm to 9.52mm.

We provide Finned Tube Air Heaters in India manufactured to the highest standards. Check out our availability and get a free Corten Steel Air Heater Tubes quote.

Air Preheater Tubes Trade Name

 

Trade Name

Grade

UNS #

Heater Tubes(Seamless)

Heater Tubes( Heater / Condenser ) (without Filler Metal)

Heater Tubes( General Service ) (Seamless/Welded)

304

TP304

S30400

A213 / SA213

A249 / SA249

A269

304L

TP304L

S30403

A213 / SA213

A249 / SA249

A269

304H

TP304H

S30409

A213 / SA213

A249 / SA249

—–

316

TP316

S31600

A213 / SA213

A249 / SA249

A269

316L

TP316L

S31603

A213 / SA213

A249 / SA249

A269

316H

TP316H

S31609

A213 / SA213

A249 / SA249

—–

321

TP321

S32100

A213 / SA213

A249 / SA249

A269

321H

TP321H

S32109

A213 / SA213

A249 / SA249

—–

347

TP347

S34700

A213 / SA213

A249 / SA249

A269

347H

TP347H

S34709

A213 / SA213

A249 / SA249

—–

317L

TP317L

S31703

A213 / SA213

A249 / SA249

—–

Air Preheater Tubes Advantages

(1) Increasing the furnace gases’ temperature improves combustion rates and efficiency.

(2) The air preheater lowers the stack temperature by extracting heat from the flue gases, which maximizes boiler efficiency. Studies have shown that a drop of 20-22 C in the flue gases temperature could result in a 1% increase in boiler efficiency.

(3) Preheating the fuel can burn poor fuel grades without removing excess air from the combustion chamber.

(4) Increasing steam generation capacity per unit of boiler surface increases steam generation capacity.

(5) The plant has saved fuel. The plant’s thermal efficiency has been increased

(6). Using hot air in the combustion of pulverized coal can facilitate the drying of coal, transporting crushed coal to burners, and accelerating the explosion.

 

Working of Air Preheater Tubes

As in the case of air preheaters with shell and tube architecture, the exhaust heat from the flue gases is transferred to the air. This is when they are brought into direct contact with one another or when they come into indirect contact with the air.

An air preheater consists of a shell with tubes arranged in a square or triangular configuration. It is welded to a tube plate. Depending upon the type of operation and ease of cleaning, flue gases and air can be discharged either from the shell side of the system or from the tube side.

To increase the efficiency of air preheaters made by Thermodyne Boilers, finned tube air preheaters are made with an increased heating surface area without a larger size.

We build custom air preheaters based on our customers’ specifications at Thermodyne Engineering Systems.

Depending on the situation, our Air Preheaters are built in either a single-pass design or a double-pass design for both flue gases and air to receive the most heat from the flue gases.

Significant Advantages of Air Preheater Tubes

  • The thickness of the base metal allows for an increased corrosion allowance, extending the life of the equipment.
  • Designed in modular construction, easy to install, with minimal site work. Experience retrofitting Air Preheater Tubes from other suppliers after thoroughly analysing load data and site conditions.
  • Ensure leak-tightness by machining all tube mating surfaces and using high-quality ceramic gaskets
  • Modules are fully assembled in the shop and tested for leak tightness before dispatch, starting the industry trend of modularization of air preheaters.
  • Designs are adequate to ensure no corrosion occurs on the equipment’s cold ends during sulphur-bearing fuel firing.
  • For cleaning soot from tubes, a ladder-type water wash arrangement is afford

Air Preheater Tubes Application Industry

  • Chemical industry
  • The sugar industry
  • The power industry
  • Power generation
  • The electronic industry
  • The steel industry
  • Cooling tower
  • A superheater
  • The paper industry
  • Air heaters
  • Heat exchanger

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London, New-York, Paris, Moscow, Tokyo, Dubai, Singapore, Barcelona, Los-Angeles, Madrid Rome, Chicago, Toronto, San-Francisco, Abu-Dhabi, St-Petersburg, Amsterdam, Berlin Prague, Washington,Istanbul, Las-Vegas, Doha, Seoul, Sydney, Beijing,  Miami, Munich, Milan, San-Diego, Bangkok, Vienna, Dublin, Vancouver, Boston,  Zurich,  Melbourne, Budapest, Houston, Seattle, Montreal, Hong-Kong, Frankfurt, Sao-Paulo, Tel-Aviv, Copenhagen, Calgary, Orlando, Atlanta, Dallas, Hamburg, Osaka, Lisbon, Austin, Phoenix Naples, Oslo, Denver, Stockholm, Riyadh, Delhi, Buenos Aires, San-Jose, Brussels, Portland Philadelphia, Ottawa, Helsinki, Valencia, Brisbane, Warsaw, Minneapolis, Shanghai, Lyon, Adelaide, Edmonton, Marseille, Muscat, Athens, Stuttgart, Rio-De-Janeii, Baltimore, Auckland, Cologne, New-Orlean, Kuwait-City,  Kiev, Hanover, Perth, Minsk, Bucharest, Nashville, Dusseldorf, Manchester, Sacramento, Glasgow, Mexico-City, Salt-Lake-Ci, Raleigh, Cracow

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