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Boiler & Heat Exchanger Tubes – ASTM A179 / A213 / SA192 | Seamless, U-Bent & Welded

Product Overview

Boiler & Heat Exchanger Tubes

Boiler & Heat Exchanger Tubes are core components for thermal power plants, petrochemical units, refineries, and process industries. They are designed in such a way that they can safely handle high temperatures, pressure, and corrosive media, while also maintaining efficient heat transfer and stable performance.

manufactured from high grade stainless steel, carbon steel, alloy steel, and specialty alloys, which meet strict dimensional tolerances and international quality standards (ASTM, ASME, DIN, EN). This ensures their performance, safety, and reliability for industrial applications.

As a trusted supplier, exporter, and stockist, Moksh Tubes & Fittings LLP provides boiler and heat exchanger tubes. We source our materials from reputed mills that use advanced cold drawing, seamless forming, and welding technologies. This combination ensures precision, durability, and consistent performance for boilers, superheaters, condensers, heat exchangers, and other critical systems.

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Boiler & Heat Exchanger Tube Specifications

Category Details
Material Stainless Steel, Duplex & Super Duplex Steel, Nickel Alloys, Inconel, Monel, Titanium, Copper Alloys, Alloy Steel, Carbon Steel
Grades ASTM/ASME certified – available in all mentioned alloys
Outer Diameter (OD) 6 mm to 219 mm (¼” to 8” NB)
Wall Thickness 0.5 mm to 12.7 mm (standard & custom schedules)
Lengths Up to 12 meters or cut-to-length as per project needs
Finishes Bright Annealed, Pickled & Passivated, Electro Polished, Matte
Type Seamless, Welded (ERW, EFW), U-Bent Tubes
Standards ASTM A179, A192, A213, A249, A269, A333, ASME SA213, EN 10216, DIN standards
Applications Boilers, Heat Exchangers, Superheaters, Condensers, Economizers

Weight Chart (ASME B36.10 / B36.19)

Weight Chart (ASME B36.10 / B36.19 – Size & Weight Data)

Nominal Bore Chart Outside Diameter (O.D)
(mm)		 Schedule 5C Schedule 10C Schedule 40C Schedule 80C Schedule 160C Schedule XXC
mm inches Wt Weight Wt Weight Wt Weight Wt Weight Wt Weight Wt Weight
3 1/8 10.3 0.2 0.01 0.3 0.02 0.4 0.03 0.6 0.04 0.8 0.06 1.0 0.07
6 1/4 13.7 0.2 0.02 0.3 0.03 0.4 0.04 0.6 0.06 0.8 0.08 1.0 0.10
10 3/8 17.1 0.2 0.03 0.3 0.04 0.4 0.06 0.6 0.08 0.8 0.11 1.0 0.14
15 1/2 21.3 0.2 0.04 0.3 0.06 0.4 0.08 0.6 0.12 0.8 0.16 1.0 0.20
20 3/4 26.7 0.2 0.06 0.3 0.09 0.4 0.12 0.6 0.17 0.8 0.22 1.0 0.28
25 1 33.4 0.2 0.08 0.3 0.12 0.4 0.17 0.6 0.25 0.8 0.33 1.0 0.41
32 1 1/4 42.2 0.2 0.13 0.3 0.19 0.4 0.26 0.6 0.38 0.8 0.50 1.0 0.62
40 1 1/2 48.3 0.2 0.16 0.3 0.24 0.4 0.32 0.6 0.48 0.8 0.63 1.0 0.78
50 2 60.3 0.2 0.24 0.3 0.36 0.4 0.47 0.6 0.70 0.8 0.93 1.0 1.17
65 2 1/2 73.0 0.2 0.33 0.3 0.49 0.4 0.65 0.6 0.97 0.8 1.29 1.0 1.63
80 3 88.9 0.2 0.47 0.3 0.70 0.4 0.93 0.6 1.40 0.8 1.87 1.0 2.36
100 4 114.3 0.2 0.77 0.3 1.14 0.4 1.52 0.6 2.27 0.8 3.04 1.0 3.82
125 5 141.3 0.2 1.17 0.3 1.72 0.4 2.30 0.6 3.42 0.8 4.58 1.0 5.76
150 6 168.3 0.2 1.63 0.3 2.41 0.4 3.23 0.6 4.79 0.8 6.38 1.0 8.02

Size Charts

Schedule 5C – Size Chart (ASME B36.10)

NB (mm) NPS (inches) OD (mm) Wall Thickness (mm) Weight (kg/m)
3 1/8" 10.3 1.24 0.276
6 1/4" 13.7 1.24 0.390
10 3/8" 17.1 1.24 0.490
15 1/2" 21.3 1.65 0.800
20 3/4" 26.7 1.65 1.030
25 1" 33.4 1.65 1.300
32 1 1/4" 42.2 1.65 1.650
40 1 1/2" 48.3 1.65 1.910
50 2" 60.3 1.65 2.400
65 2 1/2" 73.0 2.11 3.690
80 3" 88.9 2.11 4.510
100 4" 114.3 2.11 5.840
125 5" 141.3 2.77 9.470
150 6" 168.3 2.77 11.320
200 8" 219.1 2.77 14.790
250 10" 273.1 3.40 22.630
300 12" 323.9 3.96 31.250
350 14" 355.6 3.96 34.360
400 16" 406.4 4.19 41.560
450 18" 457.2 4.19 46.800
500 20" 508.0 4.78 59.250
600 24" 609.6 5.54 82.470

Schedule 10C – Size Chart (ASME B36.10)

NPS (inches) NB (mm) OD (mm) Wall Thickness (mm) Internal Diameter (mm) Weight (kg/m)
1/8 3 10.30 1.24 7.82 0.28
1/4 6 13.70 1.24 11.22 0.39
3/8 10 17.10 1.24 14.62 0.49
1/2 15 21.30 1.65 18.00 0.81
3/4 20 26.70 1.65 23.40 1.04
1 25 33.40 1.65 30.10 1.32
1 1/4 32 42.20 1.65 38.90 1.68
1 1/2 40 48.30 1.65 45.00 1.93
2 50 60.30 1.65 57.00 2.43
2 1/2 65 73.00 1.65 69.70 2.96
3 80 88.90 1.65 85.60 3.62
4 100 114.30 1.65 111.00 4.67
5 125 141.30 1.65 138.00 5.79
6 150 168.30 1.65 165.00 6.91
8 200 219.10 2.11 214.88 11.51
10 250 273.10 2.77 267.56 18.81
12 300 323.90 3.05 317.80 24.59
14 350 355.60 3.40 348.80 30.10
16 400 406.40 3.40 399.60 34.44
18 450 457.20 3.80 449.60 43.28
20 500 508.00 3.80 500.40 48.15
24 600 609.60 4.00 601.60 60.92

Schedule 40C – Size Chart (ASME B36.10)

NPS (inches) NB (mm) OD (mm) Wall Thickness (mm) Weight (kg/m)
1/8 3 10.3 1.73 0.37
1/4 6 13.7 2.24 0.64
3/8 10 17.1 2.31 0.86
1/2 15 21.3 2.77 1.27
3/4 20 26.7 2.87 1.70
1 25 33.4 3.38 2.46
1 1/4 32 42.2 3.56 3.61
1 1/2 40 48.3 3.68 4.18
2 50 60.3 3.91 5.44
2 1/2 65 73.0 5.16 8.63
3 80 88.9 5.49 11.29
4 100 114.3 6.02 17.15
5 125 141.3 6.55 23.85
6 150 168.3 7.11 30.7
8 200 219.1 8.18 49.56
10 250 273.1 9.27 73.5
12 300 323.9 10.31 95.54
14 350 355.6 11.13 112.63
16 400 406.4 12.7 144.27
18 450 457.2 14.27 179.28
20 500 508.0 15.09 213.93
24 600 609.6 15.88 274.06

Schedule 80C – Size Chart (ASME B36.19)

NPS (inches) NB (mm) OD (mm) Wall Thickness (mm) Weight (kg/m)
1/8 3 10.3 1.73 0.37
1/4 6 13.7 3.02 0.83
3/8 10 17.1 3.2 1.13
1/2 15 21.3 3.73 1.63
3/4 20 26.7 3.91 2.3
1/2 15 21.3 3.73 1.63
3/4 20 26.7 3.91 2.3
1 25 33.4 4.55 3.38
1 1/4 32 42.2 4.85 4.84
1 1/2 40 48.3 5.08 5.61
2 50 60.3 5.54 7.48
2 1/2 65 73.0 7.01 11.76
3 80 88.9 7.62 15.74
4 100 114.3 8.56 25.1
5 125 141.3 9.53 36.46
6 150 168.3 10.97 49.56
8 200 219.1 12.7 77.1
10 250 273.1 15.09 114.0
12 300 323.9 17.48 153.0
14 350 355.6 19.05 180.0
16 400 406.4 21.44 227.5
18 450 457.2 23.83 282.5
20 500 508.0 26.18 342.0
24 600 609.6 30.96 480.0

Schedule 160C – Size Chart (ASME B36.10)

NPS (inches) NB (mm) OD (mm) Wall Thickness (mm) Weight (kg/m)
1/8 3 10.3 2.41 0.49
1/4 6 13.7 3.02 0.83
3/8 10 17.1 3.2 1.13
1/2 15 21.3 4.09 1.75
3/4 20 26.7 4.55 2.63
1 25 33.4 6.35 4.51
1 1/4 32 42.2 6.35 6.12
1 1/2 40 48.3 7.14 7.92
2 50 60.3 8.71 11.06
2 1/2 65 73.0 9.53 14.9
3 80 88.9 11.13 21.31
4 100 114.3 13.49 34.35
5 125 141.3 15.88 53.3
6 150 168.3 18.26 75.53
8 200 219.1 23.01 123.9
10 250 273.1 28.58 190.5
12 300 323.9 33.32 268.0
14 350 355.6 35.71 327.0
16 400 406.4 40.49 429.5
18 450 457.2 45.24 544.0
20 500 508.0 50.01 677.5
24 600 609.6 59.54 997.0

Schedule XXC – Size Chart (ASME B36.10)

NPS (inches) NB (mm) OD (mm) Wall Thickness (mm) Weight (kg/m)
1/8 3 10.3 2.41 0.49
1/4 6 13.7 3.02 0.83
3/8 10 17.1 3.2 1.13
1/2 15 21.3 4.78 1.98
3/4 20 26.7 6.02 3.32
1 25 33.4 7.47 5.25
1 1/4 32 42.2 9.09 8.26
1 1/2 40 48.3 10.15 10.68
2 50 60.3 11.07 14.82
2 1/2 65 73.0 13.49 21.56
3 80 88.9 15.24 29.83
4 100 114.3 18.26 47.17
5 125 141.3 21.95 70.65
6 150 168.3 25.4 99.57
8 200 219.1 28.58 144.45
10 250 273.1 31.75 202.0
12 300 323.9 36.53 281.25
14 350 355.6 38.89 338.0
16 400 406.4 44.45 442.5
18 450 457.2 50.01 562.0
20 500 508.0 55.56 697.0
24 600 609.6 63.5 984.0

Available Grades & Materials

Boiler & Heat Exchanger Tubes are offered in a wide range of materials and grades:

Material Grades
Stainless Steel 304, 304L, 316, 316L, 310, 321, 347 for high-temperature resistance.
Duplex & Super Duplex: 2205, S31803, S32750 for high strength and corrosion
Nickel Alloys Inconel 600, 625, 718, Monel 400, K500 for extreme environments.
Alloy Steel T11, T12, T22, T91 for high pressure boilers.
Carbon Steel ASTM A179, A192 for low and medium pressure boilers.
Copper Alloys Cu-Ni 70/30, 90/10 for marine heat exchangers and condensers.
Titanium Grades 1, 2 for desalination plants and chemical industries.
Nickel alloy tubes for heat exchangers
NICKEL ALLOYS
Stainless steel boiler and condenser tubes
STAINLESS STEEL
Duplex and super duplex tubes for seawater service
DUPLEX & SUPER
Titanium heat exchanger and condenser tubes
TITANIUM ALLOYS
Haynes superalloy tubes for high-temperature service
Haynes Superalloys
Inconel alloy tubes for corrosion-resistant applications
Inconel

Applications of Boiler & Heat Exchanger Tubes

Boiler & Heat Exchanger Tubes are crucial for industries where efficient heat transfer and mechanical strength are required:

Power Generation
  • Superheater & reheater tubes
  • Boiler tubes for thermal, gas & nuclear plants
Oil & Gas / Petrochemical
  • Process heat exchangers
  • Condensers & coolers
Chemical & Fertilizer Plants
  • Reactors, evaporators, cooling towers
Marine & Offshore
  • Cu-Ni & Titanium seawater condensers
  • Marine boiler systems
Food & Dairy
  • Hygienic stainless-steel heat exchanger tubes
HVAC & Refrigeration
  • Evaporators, condensers, chilled water systems

Industries We Serve

Power Plants
Petrochemical
Marine
Chemical
Desalination
HVAC

Buying Guide:

How to Select the Right Boiler & Heat Exchanger Tube

Material Selection Guide
Material Ideal For
Stainless Steel Steam, hygienic systems
Duplex / Super Duplex Seawater, chlorides
Nickel Alloys Acids, extreme corrosion
Carbon Steel High-pressure boiler tubes

Engineering Diagrams

basic tube layout of boiler heat exchanger
u bent tube layout of boiler heat exchange

Uses of Boiler & Heat Exchanger Tubes

Boiler & Heat Exchanger Tubes are used extensively across multiple industries, including:

Efficient Heat Transfer

Ensures efficient heat transfer in industrial systems

Extreme Condition Performance

Handles extreme temperature and pressure conditions

Corrosion Resistance

Provides corrosion resistance in aggressive environments

Energy Efficiency Support

Supports energy efficiency in power plants and process industries

Multi-Media Compatibility

Suitable for steam, gas, liquid, and chemical transport in heat systems

Operational Reliability

Delivers long term reliability and consistent performance in demanding applications

Advantages

High Temperature Strength

Maintains integrity in boilers and superheaters.

Precision Manufacturing

Tight dimensional tolerances for critical applications.

Corrosion & Oxidation Resistance

Suitable for marine and chemical exposure.

Versatile Material Selection

Stainless, alloy, carbon, copper nickel & titanium options.

Global Standards Compliance

Manufactured to ASTM, ASME, DIN, EN requirements.

Testing & Quality Control for Boiler & Heat Exchanger Tubes

Hydrostatic Test

Hydrostatic test for pressure integrity verification.

Eddy Current Test

Eddy current testing for detecting surface-level defects.

PMI Test

PMI testing to verify material grade and composition.

Hardness Test

Hardness testing for strength and durability confirmation.

Flattening & Flaring Test

Flattening and flaring to assess ductility and deformation.

Ultrasonic Test (UT)

Ultrasonic testing for internal and volumetric defects.

Why Choose Moksh Tubes?

Extensive Stock & Range: Wide inventory of boiler and heat exchanger tubes in multiple grades.
Advanced Manufacturing: Precision cold drawing, heat treatment, U-bending, and finishing for high-performance tubes.
Global Supply Network: Serving power plants, refineries, and industries worldwide.
Quality Assurance: ISO 9001:2015 certified with full compliance to ASTM/ASME.
Timely Dispatch: Efficient production and logistics for on time delivery.
Customized Solutions: Tailored tubing solutions to meet specific project and industry requirements

Frequently Asked Questions (FAQ)

What are Boiler & Heat Exchanger Tubes?

Boiler & Heat Exchanger Tubes are precision-engineered components used in power plants, refineries, chemical industries, and various heat-transfer systems. They are built to withstand high temperature, high pressure, and corrosive environments while maintaining stable heat transfer efficiency.

What materials are used to manufacture these tubes?

These tubes are manufactured in Stainless Steel, Duplex/Super Duplex, Nickel Alloys (Inconel, Monel), Alloy Steel, Carbon Steel, Copper Alloys, and Titanium. The selection depends on the operating temperature, pressure, and fluid medium.

What sizes and dimensions are available?

Boiler & Heat Exchanger Tubes are available from 6 mm to 219 mm OD, 0.5 mm to 12.7 mm wall thickness, and lengths up to 12 meters. Available in Seamless, Welded, ERW, EFW, and U-Bent forms.

What standards do these tubes meet?

These tubes are manufactured according to ASTM A179, A192, A213, A249, A269, A333, ASME SA213, EN 10216, DIN, and related global specifications with strict inspection and QC.

What are the main applications of Boiler & Heat Exchanger Tubes?

Used in boilers, superheaters, reheaters, economizers, heat exchangers, condensers, petrochemical heaters, chemical processing, marine applications (Cu-Ni & titanium), food & dairy systems, and HVAC/refrigeration.

What is the MOQ and typical lead time?

Ex‑stock sizes dispatch 2–5 days; make‑to‑order 2–6 weeks, grade/OD/WT par depend karta hai.

What test certificates and NDT do you provide?

EN 10204 3.1 MTC with heat/lot traceability; Hydro, Eddy Current, UT, PMI, Hardness testing available as per PO.

Contact Us

For further information, quotes, or customized boiler and heat exchanger tube products, Moksh Tubes & Fittings LLP is your dependable partner for Boiler & Heat Exchanger Tubing Solutions.

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