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Boiler Tubes

Home 9 PIPES 9 HEAT EXCHANGER 9 BOILER TUBES
BOILER TUBES

Boiler Tubes Suppliers and Manufacturers in India, Boiler Tubes Manufacturer & Distributor, Boiler Tubes Manufacturer

Detailed Information:

Boiler Tubes

Ratna Exports is a leading manufacturer and supplier of carbon steel cold-drawn seamless straight and U- Bend Boiler Tubes and alloy steel cold-drawn seamless straight and U- Bend boiler tubes. We also export our products from India.

Boiler Tubes are designed to carry hot gases or water vapour through a sealed container of water. This process uses thermal conduction to transfer heat from the vapour to the water, heating the water and producing steam. In India, boiler tube manufacturers recommend using these tubes for steam locomotives. There are two main types of boiler tubes: fire boiler tubes and water boiler tubes. SA214 tubing is typically made of carbon or alloy steel, often using the SA213-T12 specification. These tubes are commonly used in steam boilers and power plants. Suppliers of Boiler Tubes suggest using them in fossil fuel facilities and industrial processing plants.

How Are Boiler Tubes Made?

Both medium-pressure and high-pressure boiler tubes start with the same manufacturing processes, which include fine drawing, surface brightening, hot rolling, cold drawing, and heat expansion. However, additional steps are taken to enhance the strength and resistance of high-pressure pipes.

Heat treatment, which involves heating and cooling the high-pressure boiler pipes, increases their toughness, hardness, and wear resistance. The heat treatment process includes quenching, tempering, and annealing.

Quenching involves heating the pipe evenly to the appropriate temperature and then rapidly cooling it by immersing it in water or oil. This process increases the hardness of the high-pressure boiler tube, often followed by air cooling or cooling in a freezing zone.

Tempering is performed to reduce the brittleness of the pipe, which can result from the quenching process. It also helps prevent the pipe from cracking or breaking.

Annealing relieves internal stress within the pipe. During annealing, the seamless tube is heated to a critical temperature and allowed to cool slowly in ash or lime. This process helps improve the pipe’s overall durability.

Boiler Tubes Specification:

 

Seamless Pipe (OD) 21.3 – 660mm ( Inch 1/2” – 26”)
SAW 16″ – 100″ NB
LSAW / DSAW 16’OD TO 54″ OD (8 MM TO 50 MM THK)
ERW and HFW 1/2” NB – 24” NB
End finish BSE -Bevel small end, BOE-Beveled One End, BLE -Bevel large end, BBE -Bevel both ends, PBE -Plain Both Ends, POE -Plain One End, BE -Beveled end, TBE -Threaded Both Ends, TOE -Treaded One End
Wall Thickness (WT) 4.5mm to 60mm
Standard Length 6000mm, SRL, 12000mm, Double Random Length (DRL), 40FT, Single Random Length (SRL), 2000mm, 20FT, Custom Length, 3000mm, DRL
Schedules SCH-5, SCH-40, SCH-XS, SCH-5S, SCH-80, SCH-80S, SCH-XXS, SCH160, SCH-STD, SCH-40S, SCH-10S, SCH-10
Marking by suppliers
  • Specification
  • Material Grade
  • Nominal Pipe Sizes (NPS)
  • Wall Thickness or Schedule No.
  • Manufacturing Process (Seamless/ EFW/ ERW/ Welded)
  • Heat Number
  • Stockholder/ Dealer/ Supplier or Manufacturer’s Name or Custom Logo – as required
Different methods used by manufacturers’ Extrusion, CDW, Cold Drawn Seamless (CDS), Electro Fusion Seam Welded (EFSW), Fabricated, 100% X-Ray/ Gamma Ray Welded, Welded, Submerged Arc Welded (SAW), Longitudinally Submerged Arc Welded (LSAW), Seamless, Hot Finish Seamless (HFS), Horizontal Submerged Arc Welded (HSAW), Electric Resistance Welded (ERW)
Surface Treatment
  • Galvanized
  • PVC, Black, and color coating
  • Transparent oil, anti-rust oil
  • Bare pipe, Painted,
  • 3PE, FBE, Epoxy Coating
  • or as per the client’s requirement

 

Boiler Tubes Chemical Properties

Grade Chemical Composition%
C Si Mn P, S Max Cr Mo Ni Max V Al Max
T2 0.10~0.20 0.10~0.30 0.30~0.61 0.025 0.50~0.81 0.44~0.65
T11 0.05~0.15 0.50~1.00 0.30~0.60 0.025 1.00~1.50 0.44~0.65
T12 0.05~0.15 Max 0.5 0.30~0.61 0.025 0.80~1.25 0.44~0.65
T22 0.05~0.15 Max 0.5 0.30~0.60 0.025 1.90~2.60 0.87~1.13
T91 0.07~0.14 0.20~0.50 0.30~0.60 0.02 8.0~9.5 0.85~1.05 0.4 0.18~0.25 0.015
T92 0.07~0.13 Max 0.5 0.30~0.60 0.02 8.5~9.5 0.30~0.60 0.4 0.15~0.25 0.015
Grade Chemical Composition% Mechanical Properties
W B Nb N T. S Y. P Elongation Hardness
T2 ≥ 415MPa ≥ 205MPa ≥ 30% 163HBW(85HRB)
T11 ≥ 415MPa ≥ 205MPa ≥ 30% 163HBW(85HRB)
T12 ≥ 415MPa ≥ 220MPa ≥ 30% 163HBW(85HRB)
T22 ≥ 415MPa ≥ 205MPa ≥ 30% 163HBW(85HRB)
T91 0.06~0.10 0.03~0.07 ≥ 585MPa ≥ 415MPa ≥ 20% 250HBW(25HRB)
T92 1.50~2.00 0.001~0.006 0.04~0.09 0.03~0.07 ≥ 620MPa ≥ 440MPa ≥ 20% 250HBW(25HRB)

How to Choose Good Quality Boiler Tubes?

To pick out the right and high-quality boiler tubes, you should take into consideration the following:

  1. Look at the cross-section of the tube. There are no bumps or irregularities in the cross-section of a seamless tube of good quality because it will have a smooth cross-section.
  2. Check the density of the pipe to understand the percentage of impurities in the tube. Avoid lines with low density!
  3. Make sure you check the trademark. It is common for renowned manufacturers to put their brands on their seamless tubes.
  4. Check the surface of the boiler tube. 

 A good quality boiler tube will have a smooth surface on the inside. If the surface is rough and uneven, you can be sure that the boiler tube’s quality is lower.

 

Rust Removal of the Boiler Tubes

Several methods are available for removing rust from boiler tubes, the simplest being using a solvent and emulsion to clean the pipe. However, this method can only remove dust, oil, etc., and not altogether remove all organic residues from the tubes.

A manual or power tool can also be used to remove rust. Oxide coatings, welding slag, and rust can be removed with cleaning tools.

It is prevalent Chemical and electrolytic methods, as well as acid cleaning methods, are the most frequently used methods.

In addition to removing dirt, oxide, and rust from the boiler tube to a greater extent than any other cleaning method, this method can improve the roughness of the tube.

Boiler Tubes Wall Thickness

 

Boiler Tubes Schedule
SCH 10 SCH 20 SCH 30 SCH STD SCH 40 SCH 60 SCH XS SCH 80 SCH 100 SCH 120 SCH 140 SCH 160 SCH XXS
Boiler Tubes Wall Thickness (in)
1/8 0.405 0.068 0.068 0.095 0.095
1/4 0.540 0.088 0.088 0.119 0.119
3/8 0.675 0.091 0.091 0.126 0.126
1/2 0.840 0.109 0.109 0.147 0.147 0.187 0.294
3/4 1.050 0.113 0.113 0.154 0.154 0.219 0.308
1 1.315 0.133 0.133 0.179 0.179 0.250 0.358
1 1/4 1.660 0.140 0.140 0.191 0.191 0.250 0.382
1 1/2 1.900 0.145 0.145 0.200 0.200 0.281 0.400
2 2.375 0.154 0.154 0.218 0.218 0.344 0.436
2 1/2 2.875 0.203 0.203 0.276 0.276 0.375 0.552
3 3.500 0.216 0.216 0.300 0.300 0.438 0.600
3 1/2 4.000 0.226 0.226 0.318 0.318
4 4.500 0.237 0.237 0.337 0.337 0.438 0.531 0.674
5 5.563 0.258 0.258 0.375 0.375 0.500 0.625 0.750
6 6.625 0.280 0.280 0.432 0.432 0.562 0.719 0.864
8 8.625 0.250 0.277 0.322 0.322 0.406 0.500 0.500 0.594 0.719 0.812 0.906 0.875
10 10.750 0.250 0.307 0.365 0.365 0.500 0.500 0.594 0.719 0.844 1.000 1.125 1.000
12 12.750 0.250 0.330 0.375 0.406 0.562 0.500 0.688 0.844 1.000 1.125 1.312 1.000
14 14.000 0.250 0.312 0.375 0.375 0.438 0.594 0.500 0.750 0.938 1.094 1.250 1.406
16 16.000 0.250 0.312 0.375 0.375 0.500 0.656 0.500 0.844 1.031 1.219 1.438 1.594
18 18.000 0.250 0.312 0.438 0.375 0.562 0.750 0.500 0.938 1.156 1.375 1.562 1.781
20 20.000 0.250 0.375 0.500 0.375 0.594 0.812 0.500 1.031 1.281 1.500 1.750 1.969
22 22.000 0.250 0.375 0.500 0.375 0.875 0.500 1.125 1.375 1.625 1.875 2.125
24 24.000 0.250 0.375 0.562 0.375 0.688 0.969 0.500 1.219 1.531 1.812 2.062 2.344
30 30.000 0.312 0.500 0.625 0.375 0.500
32 32.000 0.312 0.500 0.625 0.375 0.688
34 34.000 0.312 0.500 0.625 0.375 0.688
36 36.000 0.312 0.500 0.625 0.375 0.750
42 42.000 0.500 0.625 0.375 0.750

Boiler Tubes Grades

  • Cr5Mo (STFA25 STPA25 STBA25 T5 P5)
  • 15CrMo (STFA22 STPA22 STBA22 T12 P12)
  • 1.25Cr0.5Mo (STFA23 STPA23 STBA23 T11 P11)
  • Cr9Mo (STFA26 STPA26 STBA26 T9 P9)
  • 12Cr1MoV
  • 12Cr2Mo (10CrMo910 T22 P22)
  • 10Cr9Mo1VNb T91 (P91)
  • 12Cr2MoWVTiB (R102)

Boiler Tubes Strength

  • The quality of the welds is excellent
  • We have procured the steel for this project from SAIL, one of the world’s leading steel manufacturers.
  • Tubes that have low tolerances on the OD and thickness of ERW tubes
  • The company RatnaExports.com is a self-certified manufacturer of boiler tubes and pipes.
  • Team of in-house R&D and inspection professionals

Boiler Tubes Pressure Rating

AVE. WALL INCHES

MIN YIELD STRENGTH (PSI)

MIN TENSILE STRENGTH (PSI)

THEORETICAL BURST PRESSURE * (PSI)

WORKING PRESSURE (PSI) 25% OF BURST

THEORETICAL YIELD POINT ** (PSI)

COLLAPSE PRESSURE *** (PSI)

0.250

0.020

30,000

75,000

14,286

3,571

5,714

4,416

0.250

0.028

30,000

75,000

21,649

5,412

8,660

5,967

0.250

0.035

30,000

75,000

29,167

7,292

11,667

7,224

0.250

0.049

30,000

75,000

48,355

12,089

19,342

9,455

0.250

0.065

30,000

75,000

81,250

20,313

32,500

11,544

0.375

0.020

30,000

75,000

8,955

2,239

3,582

3,029

0.375

0.028

30,000

75,000

13,166

3,292

5,266

4,145

0.375

0.035

30,000

75,000

17,213

4,303

6,885

5,077

0.375

0.049

30,000

75,000

26,534

6,634

10,614

6,816

0.375

0.065

30,000

75,000

39,796

9,949

15,918

8,597

0.500

0.020

30,000

75,000

6,522

1,630

2,609

2,304

0.500

0.028

30,000

75,000

9,459

2,365

3,784

3,172

0.500

0.035

30,000

75,000

12,209

3,052

4,884

3,906

0.500

0.049

30,000

75,000

18,284

4,571

7,313

5,304

0.500

0.065

30,000

75,000

26,351

6,588

10,541

6,786

0.500

0.083

30,000

75,000

37,275

9,319

14,910

8,307

0.625

0.020

30,000

75,000

5,128

1,282

2,051

1,859

0.625

0.028

30,000

75,000

7,381

1,845

2,953

2,568

0.625

0.035

30,000

75,000

9,459

2,365

3,784

3,172

0.625

0.049

30,000

75,000

13,947

3,487

5,579

4,335

0.625

0.065

30,000

75,000

19,697

4,924

7,879

5,591

0.625

0.083

30,000

75,000

27,124

6,781

10,850

6,910

0.625

0.095

30,000

75,000

32,759

8,190

13,103

7,734

0.625

0.109

30,000

75,000

40,172

10,043

16,069

8,639

0.750

0.028

30,000

75,000

6,052

1,513

2,421

2,156

0.750

0.035

30,000

75,000

7,721

1,930

3,088

2,669

0.750

0.049

30,000

75,000

11,273

2,818

4,509

3,664

0.750

0.065

30,000

75,000

15,726

3,931

6,290

4,749

0.750

0.083

30,000

75,000

21,318

5,330

8,527

5,905

0.750

0.095

30,000

75,000

25,446

6,362

10,179

6,637

0.750

0.109

30,000

75,000

30,733

7,683

12,293

7,453

0.750

0.120

30,000

75,000

35,294

8,824

14,118

8,064

0.875

0.020

30,000

75,000

3,593

898

1,437

1,340

0.875

0.028

30,000

75,000

5,128

1,282

2,051

1,859

0.875

0.035

30,000

75,000

6,522

1,630

2,609

2,304

0.049

30,000

75,000

9,459

2,365

3,784

3,172

0.875

0.065

30,000

75,000

13,087

3,272

5,235

4,126

0.875

0.083

30,000

75,000

17,560

4,390

7,024

5,152

0.875

0.095

30,000

75,000

20,803

5,201

8,321

5,807

0.875

0.109

30,000

75,000

24,886

6,221

9,954

6,543

0.875

0.120

30,000

75,000

28,346

7,087

11,339

7,100

1.000

0.028

30,000

75,000

4,449

1,112

1,780

1,633

1.000

0.035

30,000

75,000

5,645

1,411

2,258

2,027

1.000

0.049

30,000

75,000

8,149

2,037

3,259

2,796

1.000

0.065

30,000

75,000

11,207

2,802

4,483

3,647

1.000

0.083

30,000

75,000

14,928

3,732

5,971

4,567

1.000

0.095

30,000

75,000

17,593

4,398

7,037

5,159

1.000

0.109

30,000

75,000

20,908

5,227

8,363

5,827

1.000

0.120

30,000

75,000

23,684

5,921

9,474

6,336

1.000

0.134

30,000

75,000

27,459

6,865

10,984

6,963

1.250

0.035

30,000

75,000

4,449

1,112

1,780

1,633

1.250

0.049

30,000

75,000

6,380

1,595

2,552

2,260

 

Boiler Tubes Application Industry

  • Boilers that produce steam
  • Plants that burn fossil fuels
  • Exchangers of heat
  • Electric Power Plants
  • Cogeneration Facilities
  • Air Preheater Unit
  • Waste Heat Plants
  • Power Generation
  • Economiser etc

 

Countries We Export:

Afghanistan, Albania, Algeria, Andorra, Angola, Antigua-Barbuda Argentina, Armenia, Australia, Austria, Azerbaijan, Bahamas, Bahrain, Bangladesh, Barbados, Belarus, Belgium, Belize, Benin, Bhutan, Bolivia, Bosnia-Herzegovina, Botswana, Brazil, Brunei, Bulgaria, Burkina-Faso, Burundi, Côte d’Ivoire, Cabo Verde, Cambodia, Cameroon, Canada, Central African Republic, Chad, Chile, China, Colombia, Comoros, Congo (Congo-Brazzaville), Costa-Rica, Croatia, Cuba, Cyprus, Czechia (Czech Republic), Democratic Republic of the Congo, Denmark, Djibouti, Dominica, Dominican Republic, Ecuador, Egypt, El Salvador, Equatorial Guinea, Eritrea, Estonia, Eswatini (fmr. “Swaziland”), Ethiopia, Fiji, Finland, France, Gabon, Gambia, Georgia, Germany, Ghana, Greece, Grenada, Guatemala, Guinea, Guinea-Bissau, Guyana, Haiti, Holy See, Honduras, Hungary, Iceland, India, Indonesia, Iran, Iraq, Ireland, Israel, Italy, Jamaica, Japan, Jordan, Kazakhstan, Kenya, Kiribati, Kuwait, Kyrgyzstan, Laos, Latvia, Lebanon, Lesotho, Liberia, Libya, Liechtenstein, Lithuania, Luxembourg, Madagascar, Malawi, Malaysia, Maldives, Mali, Malta, Marshall Islands, Mauritania, Mauritius, Mexico, Micronesia, Moldova, Monaco, Mongolia, Montenegro, Morocco, Mozambique, Myanmar (formerly Burma), Namibia, Nauru, Nepal, Netherlands, New Zealand, Nicaragua, North Korea, North Macedonia, Norway, Oman, Pakistan, Palau, Palestine-State, Panama, Papua, New Guinea, Paraguay, Peru, Philippines, Poland, Portugal, Qatar, Romania, Russia, Rwanda, Saint Kitts and Nevis, Saint Lucia, Saint Vincent and the Grenadines, Samoa, San Marino, Sao Tome and Principe, Saudi Arabia, Senegal, Serbia, Seychelles, Sierra Leone, Singapore, Slovakia, Slovenia, Solomon Islands, Somalia, South Africa, South Korea, South Sudan, Spain, Sri Lanka, Sudan, Suriname, Sweden, Switzerland, Syria, Tajikistan, Tanzania, Thailand, Timor-Leste, Togo, Tonga, Trinidad and Tobago, Tunisia, Turkey, Turkmenistan, Tuvalu, Uganda, Ukraine, United Arab Emirates, United Kingdom, United States of America, Uruguay, Uzbekistan, Vanuatu, Venezuela, Vietnam, Yemen, Zambia, Zimbabwe.

Cities We Supply:

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