Alloy Steel Heat Exchanger Tubes Manufacturer in India
Alloy Steel Heat Exchanger Tubes Manufacturer in India
Sachiya Steel International is a leading Alloy Steel Heat Exchanger Tubes manufacturer in India, offering tubes in a wide range of grades, sizes, and specifications to meet the requirements of heat exchangers, boilers, condensers, pressure vessels, and other high-temperature industrial applications. Our Alloy Steel Heat Exchanger Tubes are manufactured using quality-tested raw materials and are available in both standard and customized dimensions.
We supply tubes in grades such as A213, A179, A192, 16Mo3, P11, P22, P5, P9, P91, and other alloy steel grades as required. Standard sizes are available from stock, subject to availability, while non-standard sizes, wall thicknesses, and lengths can be manufactured as per customer specifications. All products can be supplied with relevant mill test certificates, heat-treatment details, dimensional inspection reports, and other quality documentation as required.
What Are Alloy Steel Heat Exchanger Tubes?
Alloy Steel Heat Exchanger Tubes are seamless alloy steel tubes that carry fluid inside a heat exchanger, boiler or condenser and pass heat through their walls. One fluid flows inside the tubes, and another flows around them. Heat moves across the wall from the hotter fluid to the cooler one.
The steel carries chromium and molybdenum, and sometimes nickel. Chromium resists oxidation and sulphur attack. Molybdenum keeps the steel strong at high temperature. Compared with plain carbon steel, alloy tube lasts longer in hot, sour or hydrogen-rich service.
Alloy Steel Heat Exchanger Tubes
High-quality alloy steel heat exchanger tubes manufactured for demanding applications across oil & gas, petrochemical, chemical, power generation, engineering and process industries. Available in multiple grades, sizes, wall thicknesses and manufacturing specifications.
Types of Alloy Steel Heat Exchanger Tubes
Alloy Steel Heat Exchanger Tubes are available in different grades, manufacturing methods, shapes, and delivery conditions to meet the requirements of heat exchangers operating under varying temperatures and pressures. As an Alloy Steel Heat Exchanger Tubes Manufacturer, we offer the following options:
- Chrome-Moly Tubes: ASTM A213 T5, T9, T11, T12, and T22 grades are commonly selected for refinery, petrochemical, boiler, and power plant heat exchangers.
- Creep-Strength Tubes: ASTM A213 T91 is a 9Cr-1Mo-V-Nb alloy steel grade developed for high-temperature and high-pressure service.
- Carbon-Molybdenum Tubes: ASTM A209 T1 provides an economical solution for heat exchanger applications involving moderate temperatures.
- Low-Temperature Tubes: ASTM A334 Grade 3, Grade 7, and Grade 9 are nickel alloy steel grades used in chillers, coolers, and other cold-service applications.
- EN Pressure Tubes: EN 10216-2 grades such as 16Mo3, 13CrMo4-5, and 10CrMo9-10 are supplied for projects requiring European pressure-tube specifications.
- Straight Tubes: Supplied in specified lengths for fixed-tube-sheet and floating-head heat exchanger bundles.
- U-Bend Tubes: Manufactured from straight tubes and bent according to customer drawings for U-tube heat exchangers.
- Cold-Drawn Tubes: Produced with closer dimensional tolerances and a smooth bore, making them suitable for applications requiring accurate tubesheet fitting.
- Hot-Finished Tubes: Available with heavier wall thicknesses for applications where very tight dimensional tolerances are not essential.
we can provide these tubes in different ODs, wall thicknesses, lengths, finishes, and delivery conditions according to the applicable standard and project requirements.
A213 T5, T9, T11, T22, T91, A209 T1 and 16Mo3 Alloy Steel Heat Exchanger Tubes Manufacturers and Suppliers in India
We manufacture and supply Alloy Steel Heat Exchanger Tubes in ASTM A213 T5, T9, T11, T22, T91, ASTM A209 T1, and 16Mo3 grades. Other grades can also be quoted based on project requirements. Popular tube sizes are maintained in ready stock, subject to availability, while other sizes are manufactured to order.
T11 and T22 are commonly selected for hot hydrocarbon and steam service, while T5 and T9 are suitable where resistance to oxidation and sulphur-containing environments is important. T91 is designed for high-temperature service where higher strength can allow reduced wall thickness. A209 T1 provides a practical option for moderate-temperature applications, while 16Mo3 and other EN chrome-moly grades are suitable for projects following European specifications.
When comparing Alloy Steel Heat Exchanger Tubes Manufacturers and Suppliers, grade selection is only part of the requirement. Material documentation is equally important. The certificate should clearly identify the material grade, heat-treatment condition
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→Get Certified Alloy Steel Heat Exchanger Tubes at Competitive Factory Prices
Alloy Steel Heat Exchanger Tubes Specification
The table below sets out the working specification.
| Item | Detail |
|---|---|
| Product | Alloy Steel Heat Exchanger Tubes |
| Type | Seamless |
| Main grades | A213 T5, T9, T11, T12, T22, T91; A209 T1; A334 Gr 3, 7, 9; EN 10216-2 16Mo3, 13CrMo4-5, 10CrMo9-10 |
| Product standards | ASTM A213 / ASME SA213, ASTM A209, ASTM A334, EN 10216-2 |
| General requirements | ASTM A1016 (for A213), ASTM A450 (for A209) |
| Size basis | OD and wall thickness, wall ordered by minimum or average |
| Size reference | OD 15.88 to 50.8 mm in the weight chart, other sizes on request |
| Wall reference | BWG 16, 14, 12 and 10 in the chart, other walls on request |
| Length | Fixed, random or cut length |
| Shapes | Straight tubes, or U-bend against a drawing |
| Finish | Cold drawn or hot finished, pickled, oiled or varnished |
| Heat treatment | Annealed, normalised or tempered, as the grade requires |
| Tests | Chemical analysis, tensile, hardness, flattening, flaring, hydrostatic or eddy current test |
| Certificate | EN 10204 3.1 with every order, 3.2 on request |
| Inspection | Third-party inspection on request |
Alloy Steel Heat Exchanger Tubes Standards and Specifications
Heat exchanger tubes are bought to a material standard, with a design code and a general standard running alongside. The table shows how they link.
| Standard | Role | Applies to |
|---|---|---|
| ASTM A213 / ASME SA213 | Seamless ferritic and austenitic alloy tubes for boilers, superheaters and heat exchangers | T5, T9, T11, T12, T22, T91 |
| ASTM A209 | Seamless carbon-molybdenum boiler and superheater tubes | T1 |
| ASTM A334 | Seamless and welded tubes for low-temperature service | Gr 3, 7, 9 |
| ASTM A1016 | General requirements for ferritic alloy, austenitic and duplex tubes | Tolerances, tests, marking for A213 |
| ASTM A450 | General requirements for carbon and low-alloy tubes | Tolerances, tests for A209 |
| EN 10216-2 | Seamless tubes for pressure use with elevated-temperature properties | 16Mo3 and EN chrome-moly tubes |
| TEMA | Standards for shell and tube heat exchangers | Tube sizes and fits in the bundle |
| ASME Section VIII, Div. 1 | Pressure vessel design rules | Wall and allowable stress by your designer |
| EN 10204 | Types of inspection documents | 3.1 and 3.2 certificates |
Alloy Steel Heat Exchanger Tubes Material and Grades
Pick the grade by the hottest metal temperature and the fluid. The table lists common choices.
| Grade | UNS | EN number (closest) | Best for |
|---|---|---|---|
| A213 T5 | K41545 | 1.7362 (X12CrMo5) | Sulphur-bearing refinery streams |
| A213 T9 | K81590 | 1.7386 (X11CrMo9-1) | Oxidising hot gas and flue duty |
| A213 T11 | K11597 | 1.7335 (13CrMo4-5) | Hot hydrocarbon and steam service |
| A213 T12 | K11562 | 1.7335 (13CrMo4-5) | Moderate-temperature steam |
| A213 T22 | K21590 | 1.7380 (10CrMo9-10) | Hydrogen service and power plant heaters |
| A213 T91 | K90901 | 1.4903 (X10CrMoVNb9-1) | Very high-temperature, high-pressure duty |
| A209 T1 | K11522 | 1.5415 (16Mo3) | Moderate heat at lower cost |
| A334 Gr 3 | K31918 | 1.5637 (12Ni14) | Chillers and cold-service coolers |
What Is the Difference Between Alloy Steel Heat Exchanger Tubes and Carbon Steel Heat Exchanger Tubes?
The short answer: carbon steel tubes (such as ASTM A179) are cheaper and work well in mild, clean service, while alloy steel tubes resist heat, sulphur, hydrogen and oxidation, and last longer in harsh duty. Choose carbon when the fluid is gentle and the temperature is moderate. Choose alloy when the metal runs hot or the fluid is aggressive.
| Point | Alloy steel tubes | Carbon steel tubes (A179) |
|---|---|---|
| Alloy content | Chromium, molybdenum, nickel | Little or none |
| Heat resistance | Strong at high temperature | Drops off as heat rises |
| Resistance to oxidation and sulphur | Good | Poor |
| Hydrogen service | Suitable in grades like T22 | Prone to attack |
| Cost | Higher | Lower |
| Service life in harsh duty | Longer | Shorter |
| Typical use | Refinery, power, petrochemical exchangers | Water, steam and clean process cooling |
Alloy Steel Heat Exchanger Tubes Chemical Composition
Chemistry sets heat resistance, creep strength and weldability. The first table shows the chrome-moly grades under ASTM A213, one element per row. Values are percentage by weight, maximum unless shown as a range.
| Element | T5 | T9 | T11 | T22 | T91 |
|---|---|---|---|---|---|
| Carbon (C) | 0.15 | 0.15 | 0.05–0.15 | 0.05–0.15 | 0.07–0.14 |
| Manganese (Mn) | 0.30–0.60 | 0.30–0.60 | 0.30–0.60 | 0.30–0.60 | 0.30–0.60 |
| Silicon (Si) | 0.50 | 0.25–1.00 | 0.50–1.00 | 0.50 | 0.20–0.50 |
| Chromium (Cr) | 4.00–6.00 | 8.00–10.00 | 1.00–1.50 | 1.90–2.60 | 8.00–9.50 |
| Molybdenum (Mo) | 0.45–0.65 | 0.90–1.10 | 0.44–0.65 | 0.87–1.13 | 0.85–1.05 |
| Vanadium (V) | — | — | — | — | 0.18–0.25 |
| Niobium (Nb) | — | — | — | — | 0.06–0.10 |
| Phosphorus (P) | 0.025 | 0.025 | 0.025 | 0.025 | 0.020 |
| Sulphur (S) | 0.025 | 0.025 | 0.025 | 0.025 | 0.010 |
Carbon-Moly and EN Grades
| Grade | C | Mn | Si | Cr | Mo | P max | S max |
|---|---|---|---|---|---|---|---|
| A209 T1 | 0.10–0.20 | 0.30–0.80 | 0.10–0.50 | — | 0.44–0.65 | 0.025 | 0.025 |
| 16Mo3 | 0.12–0.20 | 0.40–0.90 | 0.35 max | 0.30 max | 0.25–0.35 | 0.025 | — |
Alloy Steel Heat Exchanger Tubes Mechanical Properties
Mechanical properties show how strong the tube is. They also guide how hard it can be before it is rolled into a tubesheet. The table gives minimum values.
| Grade | Tensile min (MPa) | Yield min (MPa) | Elongation min (%) | Hardness max | Typical service |
|---|---|---|---|---|---|
| A213 T5, T9, T11, T12, T22 | 415 | 205 | 30 | 163 HBW / 85 HRB | Refinery and power exchangers |
| A213 T91 | 585 | 415 | 20 | 250 HBW | High-temperature, high-pressure duty |
| A209 T1 | 380 | 205 | 30 | 80 HRB | Moderate-heat boiler and exchanger tubes |
| 16Mo3 (EN 10216-2, wall up to 16 mm) | 450–600 | 280 | 22 | — | EN-code pressure tubes |
Alloy Steel Heat Exchanger Tubes Size and Weight Chart
Heat exchanger tubes are sized by OD and wall, and walls are often given as BWG gauge numbers. We calculate weight with the standard formula for carbon and low-alloy steel:
OD and wall are in mm. Example: a 25.4 mm OD tube with a 2.11 mm wall (14 BWG) weighs (25.4 − 2.11) × 2.11 × 0.02466 = 1.21 kg/m. Multiply by the total length of the bundle to estimate the tube order.
| OD (mm) | OD (in) | 16 BWG, 1.65 mm (kg/m) | 14 BWG, 2.11 mm (kg/m) | 12 BWG, 2.77 mm (kg/m) | 10 BWG, 3.40 mm (kg/m) |
|---|---|---|---|---|---|
| 15.88 | 5/8" | 0.58 | 0.72 | 0.90 | 1.05 |
| 19.05 | 3/4" | 0.71 | 0.88 | 1.11 | 1.31 |
| 25.4 | 1" | 0.97 | 1.21 | 1.55 | 1.84 |
| 31.75 | 1-1/4" | 1.22 | 1.54 | 1.98 | 2.38 |
| 38.1 | 1-1/2" | 1.48 | 1.87 | 2.41 | 2.91 |
| 44.5 | 1-3/4" | 1.74 | 2.21 | 2.85 | 3.45 |
| 50.8 | 2" | 2.00 | 2.53 | 3.28 | 3.97 |
Available Sizes, Dimensions and Tolerances
Alloy Steel Heat Exchanger Tubes are commonly ordered in the OD sizes shown above, with the wall given in BWG or mm. Other sizes can be quoted on request. The BWG gauges map to these wall thicknesses:
| BWG | Wall (mm) |
|---|---|
| 18 | 1.24 |
| 16 | 1.65 |
| 14 | 2.11 |
| 12 | 2.77 |
| 10 | 3.40 |
Tolerances follow ASTM A1016 or A450, depending on the grade. For cold-finished tubes, the OD varies by ±0.10 mm under 25.4 mm, ±0.15 mm from 25.4 to 38.1 mm, ±0.20 mm above 38.1 up to 50.8 mm, and ±0.25 mm from 50.8 to 63.5 mm. Wall may run up to 20% over nominal on tubes ordered by minimum wall, up to 38.1 mm OD, and up to 22% over above that. Tight OD matters here because the tube must expand evenly into the tubesheet hole.
Alloy Steel Heat Exchanger Tubes Common Materials
These are the materials most often asked for in Alloy Steel Heat Exchanger Tubes.
ASTM A213 T11: 1¼Cr-½Mo steel (UNS K11597) for hot hydrocarbon and steam service.
ASTM A213 T22: 2¼Cr-1Mo steel (UNS K21590) for hydrogen service and power plant heaters.
ASTM A213 T5 and T9: 5Cr and 9Cr steels for sulphur and oxidation resistance.
ASTM A213 T91: Modified 9Cr-1Mo steel (UNS K90901) for very high-temperature duty.
ASTM A209 T1: Carbon-molybdenum steel (UNS K11522) for moderate heat.
ASTM A334 Grade 3: 3.5% nickel steel (UNS K31918) for cold-service exchangers.
16Mo3, 13CrMo4-5 and 10CrMo9-10: EN pressure-tube grades.
Alloy Steel Heat Exchanger Tubes We Manufacture and Supply
We make Alloy Steel Heat Exchanger Tubes for the exchanger types below. The right grade depends on the fluid and the temperature.
| Exchanger type | Common grades | Tube form |
|---|---|---|
| Shell and tube, fixed head | T11, T22, T5 | Straight tubes |
| Shell and tube, U-tube | T11, T22, A209 T1 | U-bend, against your drawing |
| Fired heaters and furnaces | T5, T9, T22 | Straight tubes |
| High-temperature steam exchangers | T91 | Straight tubes |
| Chillers and cold-service coolers | A334 Gr 3, 7, 9 | Straight tubes |
Applications of Alloy Steel Heat Exchanger Tubes
- Oil refineries: Crude preheat trains, hydrotreater exchangers and fired heaters.
- Petrochemical plants: Reactor effluent coolers and process heaters.
- Power plants: Feedwater heaters, superheaters and condensers.
- Fertiliser plants: Ammonia and synthesis gas exchangers.
- Chemical plants: Reboilers and process coolers in hot, aggressive service.
- Oil and gas processing: Gas coolers and glycol exchangers.
- Marine and offshore: Oil coolers and engine heat recovery units.
- Pharmaceutical plants: Steam-heated utility exchangers outside the product-contact zone.
Why Choose Us as Your Alloy Steel Heat Exchanger Tubes Manufacturer in India?
With 20+ years of experience since 2005, We have the expertise to supply Alloy Steel Heat Exchanger Tubes in a wide range of grades, sizes, wall thicknesses, lengths, and finishes. We supply commonly required grades such as ASTM A213 T5, T9, T11, T22, T91, ASTM A209 T1, 16Mo3, and other grades as per applicable specifications and customer requirements. Our tubes are suitable for heat exchangers, boilers, condensers, pressure equipment, power plants, petrochemical plants, refineries, and other industrial applications.
Our production and supply capabilities support bulk requirements, replacement tubes, and project orders, with popular sizes available from ready stock, subject to availability. Tubes can be supplied with EN 10204 3.1 Material Test Certificates (MTC), inspection reports, chemical and mechanical test reports, dimensional inspection reports, hydrostatic test reports, and NDE documentation as required.
As an experienced Alloy Steel Heat Exchanger Tubes Supplier in India, we also provide appropriate packaging, export documentation, and shipment support for customers across international markets.
Countries We Export Alloy Steel Heat Exchanger Tubes To
We supply Alloy Steel Heat Exchanger Tubes to customers across major industrial markets worldwide. Our export network covers 100+ countries across the Middle East, Europe, North America, South America, Africa, and Asia-Pacific.
Middle East: Saudi Arabia, UAE, Qatar, Kuwait, Oman, Bahrain, and Iraq
Europe: Germany, United Kingdom, France, Italy, Netherlands, Spain, and Turkey
North America: USA and Canada
South America: Brazil and Mexico
Africa: South Africa, Nigeria, Egypt, Kenya, Ghana, and Tanzania
Asia-Pacific: Singapore, Malaysia, Indonesia, Thailand, South Korea, Japan, Australia, and Bangladesh
CIS & Central Asia: Kazakhstan and Uzbekistan
We support international orders with export documentation, material certificates, inspection reports, suitable packaging, and shipment coordination, helping ensure Alloy Steel Heat Exchanger Tubes reach customers safely and with the required documentation.
Alloy Steel Heat Exchanger Tubes FAQs
Common questions about alloy steel heat exchanger tube grades, dimensions, testing, U-bends, and supply.
Which grade of Alloy Steel Heat Exchanger Tubes should I choose for hot hydrocarbon service?
T11 and T22 are the usual picks. Use T5 or T9 when sulphur or oxidation is the main concern, and T91 for very high temperature and pressure.
How do I choose between T11 and T22?
Look at the metal temperature and the hydrogen content of the fluid. T22 holds up better in hydrogen and at higher heat, while T11 is cheaper for moderate duty.
Why pick alloy tubes over carbon steel tubes?
Alloy tubes keep their strength at heat and resist sulphur, oxidation and hydrogen better. In mild, clean service, carbon steel such as A179 is often enough.
Should I order tubes by minimum wall or average wall?
Minimum wall guarantees the thinnest point meets your design calculation. Average wall allows a small plus-minus variation around the nominal. Your exchanger designer should choose and state it on the order.
Can the tubes be rolled into a tubesheet?
Yes. A213 sets a hardness limit for most grades, which helps the tube expand cleanly. Make sure the tubesheet is harder than the tube, and follow your fabrication procedure.
Can you supply U-bend tubes?
Send your drawing with the bend radius and leg length, and we will confirm what can be made. Straight tubes in standard sizes are quickest to supply.
What tolerances apply to OD and wall?
ASTM A1016 or A450 sets them, depending on the grade. The tolerance figures above give a guide for cold-finished tubes.
What sizes can I order?
The chart above covers OD 15.88 to 50.8 mm in 16, 14, 12 and 10 BWG walls. Other sizes and walls can be quoted on request.
How do I calculate the weight of a tube order?
Use Weight (kg/m) = (OD − Wall) × Wall × 0.02466, with OD and wall in mm. Multiply by length and by the number of tubes. Real weight varies a little with wall tolerance.
What affects the price of Alloy Steel Heat Exchanger Tubes?
Grade is the biggest factor, since chromium, molybdenum and vanadium move the cost. OD, wall, finish, length, U-bending, testing, inspection, quantity and freight also count.
Which certificates come with the tubes?
Each order carries an EN 10204 3.1 certificate showing chemistry, mechanical results and the test carried out on each tube. A 3.2 certificate and third-party inspection are available on request.
Is every tube tested before it ships?
ASTM A213 requires a hydrostatic test or a non-destructive electric test on each tube, plus flattening and flaring tests. Tell us the test you prefer when you enquire.
Are you a manufacturer or a supplier of Alloy Steel Heat Exchanger Tubes?
We are both. We manufacture near Mumbai and supply ready stock of popular sizes from the same location, subject to availability.
Do you export Alloy Steel Heat Exchanger Tubes, and how are they packed?
Yes. We ship to 85+ countries from our Mumbai export office, and we pack the tubes to suit sea or air freight and your project needs.