Carbon Steel Seamless Tubes Manufacturer in India
Carbon Steel Seamless Tubes Manufacturer in India
Sachiya Steel International is a trusted Carbon Steel Seamless Tubes Manufacturer in India, supplying seamless tubes for heat exchangers, boilers, condensers, mechanical equipment, and other demanding industrial applications. Our range covers ASTM A179, ASTM A192, ASTM A210, ASTM A334, and EN 10305 tubes in different sizes, wall thicknesses, and grades to match specific operating conditions and project requirements.
With 20+ years of experience, we manufacture, source, and export carbon steel tubes to customers in 85+ countries. We support regular as well as bulk and project orders, with options for testing, inspection, surface finishing, and required documentation. Our focus remains on consistent material quality, accurate dimensions, applicable standards, and dependable delivery for customers across industrial and engineering sectors.
What Are Carbon Steel Seamless Tubes?
Carbon steel seamless tubes are tubular products made from a solid round steel billet without using a welded seam. The billet is heated and pierced to create a hollow shape, then rolled or drawn until it reaches the required diameter and wall thickness. Since there is no welded joint, seamless tubes provide uniform strength and are suitable for applications involving pressure, heat, and mechanical loads.
These tubes are widely used in boilers, heat exchangers, condensers, hydraulic systems, mechanical equipment, and process piping. The material grade and tube dimensions depend on the operating temperature, pressure, and application. Common specifications include ASTM A179, ASTM A192, ASTM A210, ASTM A334, and EN 10305, each designed for different service requirements.
Carbon Steel Seamless Tubes
High-quality Carbon Steel Seamless Tubes manufactured for demanding applications across oil & gas, petrochemical, power generation, construction and engineering industries. Available in multiple grades, sizes, wall thicknesses and manufacturing specifications.
Types of Carbon Steel Seamless Tubes
Carbon steel seamless tubes come in different types based on their standard, application, and manufacturing requirements. Choosing the right type depends on factors such as operating temperature, pressure, strength, and the equipment where the tube will be used.
- ASTM A179 Seamless Tubes: Designed for heat exchangers and condensers, particularly where good heat transfer and clean internal surfaces are important.
- ASTM A192 Seamless Tubes: Used for high-pressure boiler applications and equipment operating under demanding temperature conditions.
- ASTM A210 Seamless Tubes: Commonly used for boiler and superheater tubes where higher mechanical strength is required.
- ASTM A334 Seamless Tubes: Suitable for low-temperature service, including heat exchangers and pressure vessels.
- EN 10305 Seamless Tubes: Used for precision applications where accurate dimensions and a controlled surface finish are important.
- Precision Seamless Tubes: Manufactured with tighter dimensional tolerances for mechanical, automotive, and engineering applications.
An experienced Carbon Steel Seamless Tubes Manufacturer can help select the appropriate grade, size, wall thickness, and standard based on the application’s operating conditions.
Carbon Steel Heat Exchanger Tubes, Carbon Steel Boiler Tubes, Cold Drawn Seamless Tubes, Hydraulic Tubes, Mechanical Tubes, U-Bend Tubes, Carbon Steel Seamless Tubes Manufacturers and Suppliers in India
Our carbon steel seamless tube range covers heat exchanger tubes, boiler tubes, cold drawn seamless tubes, hydraulic tubes, mechanical tubes, and U-bend tubes for industrial and engineering applications. As an experienced Carbon Steel Seamless Tubes Manufacturer in India, we supply tubes to specifications such as ASTM A179, A192, A210, A334, and EN 10305-1. Straight and U-bend tubes suit heat exchangers and condensers, while cold drawn tubes work well for hydraulic cylinders, machinery, automotive components, and other precision applications.
We supply different sizes, wall thicknesses, tolerances, and delivery conditions based on the application. Cutting, bending, cleaning, oiling, phosphate coating, and end capping can also be arranged before dispatch. Each order can include heat numbers, material test certificates, inspection reports, and other required documents to maintain proper material traceability.
Types of Pipes & Tubes
Explore our range of industrial pipes and tubes, manufactured for different applications, materials, specifications and engineering requirements.
Pipes and Tubes
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Seamless Pipes
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ERW Pipes
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LSAW Pipes
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SSAW Pipes
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Seamless Tubes
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Welded Pipes
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Welded Tubes
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Box Pipes
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Box Tubes
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Brass Pipes
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Heat Exchanger Tubes
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Boiler Tubes
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Aluminium Pipes
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Carbon Steel Seamless Pipes
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Carbon Steel Pipe
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Stainless Steel Pipe
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Alloy Steel Pipe
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Duplex Steel Pipe
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Super Duplex Steel Pipe
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Nickel Alloy Pipe
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Copper Nickel Alloy Pipe
→Get Certified Carbon Steel Seamless Tubes at Competitive Factory Prices
Carbon Steel Seamless Tubes Specification
| Parameter | Details |
|---|---|
| Size Range | 1/4" to 6" OD (6.35 mm to 152.4 mm) |
| Wall Thickness | 0.71 mm (22 BWG) to 10 mm |
| Process | Hot finished, cold drawn |
| Grades | ASTM A179, A192, A210 Gr. A-1 / C, A334 Gr. 1 / 3 / 6, A519 1010 / 1020 / 1026 / 1045, EN 10216-1 / -2, EN 10305-1 |
| Delivery Condition | As drawn (hard), stress relieved, annealed, normalized, normalized and tempered |
| Length | 6 m, 9 m, 12 m, random, exact cut lengths |
| Fabrication | U-bending, end forming, cutting to length |
| Surface Finish | Black, oiled, phosphated, bright annealed |
| End Finish | Plain end, square cut, deburred, capped |
| Testing | Hydrostatic, eddy current, flattening, flaring, hardness, tensile, PMI |
| Certificate | EN 10204 3.1 (3.2 on request) |
Carbon Steel Seamless Tube Standards and Specifications
| Use | Standard |
|---|---|
| Heat Exchanger and Condenser Tubes | ASTM A179 / ASME SA179 |
| High-Pressure Boiler Tubes | ASTM A192 / ASME SA192 |
| Boiler and Superheater Tubes | ASTM A210 / ASME SA210 |
| Low Temperature Tubes | ASTM A334 |
| Feedwater Heater Tubes | ASTM A556 |
| Mechanical Tubing | ASTM A519 |
| General Requirements | ASTM A450 |
| European Pressure Tubes | EN 10216-1, EN 10216-2 |
| European Precision Tubes | EN 10305-1 (cold drawn), EN 10305-4 (hydraulic and pneumatic) |
| German Precision Tubes | DIN 2391 |
| Indian Standard | IS 1914 |
| Boiler and Pressure Vessel Code | ASME Section I, II, VIII |
| Certificate | EN 10204 3.1 and 3.2 |
Carbon Steel Seamless Tubes Material and Grades
| Duty | Grades | UNS / Material No. | Standard |
|---|---|---|---|
| Heat Exchanger and Condenser | A179 | K01200 | ASTM A179 |
| High-Pressure Boiler | A192 | K01201 | ASTM A192 |
| Boiler and Superheater | A210 Gr. A-1 / Gr. C | K02707 / K03501 | ASTM A210 |
| Low Temperature | A334 Gr. 1 / Gr. 6 / Gr. 3 | K03008 / K03006 / K31918 | ASTM A334 |
| Mechanical Tubing | 1010 / 1020 / 1026 / 1045 | G10100 / G10200 / G10260 / G10450 | ASTM A519 |
| European Pressure Tubes | P235GH / P265GH | 1.0345 / 1.0425 | EN 10216-2 |
| European Precision Tubes | E235 / E355 | 1.0308 / 1.0580 | EN 10305-1 |
| German Precision Tubes | St 35 / St 45 / St 52 | 1.0308 / 1.0408 / 1.0580 | DIN 2391 |
Common Materials
Carbon steel seamless tubes are available in different grades for heat exchangers, boilers, low-temperature service, mechanical applications, and precision engineering. The carbon and manganese content varies between grades, which affects the tube's strength and suitability for different operating conditions.
ASTM A179: Low-carbon grade commonly used for heat exchangers and condensers.
ASTM A192: Designed for high-pressure boiler applications.
ASTM A210: Grades A-1 and C offer higher strength for boiler and superheater tubes.
ASTM A334: Grades 1, 3, and 6 are used for low-temperature service, while Grade 3 contains about 3.5% nickel for colder conditions.
ASTM A519: Mechanical tubing grades include 1010, 1020, 1026, and 1045.
EN Standards: Common grades include P235TR2, P265TR2, P235GH, and P265GH under EN 10216, plus E235 and E355 under EN 10305-1.
Our experience as a Carbon Steel Seamless Tubes Supplier helps us provide the appropriate grade, standard, and delivery condition for each application. Specifying these details together ensures the tube meets the required mechanical properties and service conditions.
What Is the Difference Between Cold Drawn and Hot Finished Carbon Steel Seamless Tubes?
The difference is how the final size is made. Hot finished tubes take their size in the rolling mill while the steel is hot, so the surface carries scale and the size varies more. Cold drawn tubes get an extra pull through a die at room temperature, so they hold tighter size limits, show a smoother surface, and gain strength and hardness from the cold work. The mill then anneals or stress relieves them, depending on the strength you need.
Choose cold drawn when fit, finish, or thin walls matter, as in heat exchangers, hydraulic lines, and bearings. Choose hot finished when you need heavier walls, larger sizes, or a lower price.
| Point | Cold Drawn Seamless Tubes | Hot Finished Seamless Tubes |
|---|---|---|
| Final Sizing | Drawn through a die at room temperature | Rolled while hot |
| OD and Wall Tolerance | Tight | Wider |
| Surface | Smooth, clean, often bright | Black, scaled, or pickled |
| Strength | Higher after drawing, adjustable by heat treatment | Standard for the grade |
| Wall Range | Thin to medium | Medium to heavy |
| Typical Size Range | 1/4" to 6" OD | 1" to 6" OD and above |
| Straightness | Very good | Good |
| Price | Higher | Lower |
| Typical Standards | ASTM A179, A519, EN 10305-1, DIN 2391 | ASTM A192, A210, EN 10216 |
| Best For | Exchangers, hydraulics, bearings, automotive | Boilers, structural tubing, heavy mechanical work |
Carbon Steel Seamless Tubes Chemical Composition
Chemistry controls strength, weldability, and bendability. Values are weight percent, maximum unless a range shows.
ASTM A179, A192, A210 and A334 Seamless Tubes
| Grade | C | Mn | Si | P | S | Other |
|---|---|---|---|---|---|---|
| A179 | 0.06–0.18 | 0.27–0.63 | – | 0.035 | 0.035 | – |
| A192 | 0.06–0.18 | 0.27–0.63 | 0.25 | 0.035 | 0.035 | – |
| A210 Gr. A-1 | 0.27 | 0.93 | 0.10 min | 0.035 | 0.035 | – |
| A210 Gr. C | 0.35 | 0.29–1.06 | 0.10 min | 0.035 | 0.035 | – |
| A334 Gr. 1 | 0.30 | 0.40–1.06 | – | 0.025 | 0.025 | – |
| A334 Gr. 6 | 0.30 | 0.29–1.06 | 0.10 min | 0.025 | 0.025 | – |
| A334 Gr. 3 | 0.19 | 0.31–0.64 | 0.18–0.37 | 0.025 | 0.025 | Ni 3.18–3.82 |
ASTM A519 Mechanical Tubing
| Grade | C | Mn | P | S |
|---|---|---|---|---|
| 1010 | 0.08–0.13 | 0.30–0.60 | 0.040 | 0.050 |
| 1020 | 0.18–0.23 | 0.30–0.60 | 0.040 | 0.050 |
| 1026 | 0.22–0.28 | 0.60–0.90 | 0.040 | 0.050 |
| 1045 | 0.43–0.50 | 0.60–0.90 | 0.040 | 0.050 |
European Seamless Tubes (EN 10216 and EN 10305-1)
| Grade | C | Si | Mn | P | S |
|---|---|---|---|---|---|
| P235GH | 0.16 | 0.35 | 1.20 | 0.025 | 0.020 |
| P265GH | 0.20 | 0.40 | 0.80–1.40 | 0.025 | 0.020 |
| E215 | 0.10 | 0.05 | 0.70 | 0.025 | 0.025 |
| E235 | 0.17 | 0.35 | 1.20 | 0.025 | 0.025 |
| E355 | 0.22 | 0.55 | 1.60 | 0.025 | 0.025 |
Carbon Steel Seamless Tubes Mechanical Properties
Mechanical properties show how much load the tube carries before it stretches (yield) or breaks (tensile). Values are minimum unless marked max.
| Grade | Tensile Strength ksi (MPa) | Yield Strength ksi (MPa) | Elongation % | Hardness (max) |
|---|---|---|---|---|
| A179 | 47 (325) | 26 (180) | 35 | 72 HRB |
| A192 | 47 (325) | 26 (180) | 35 | 77 HRB |
| A210 Gr. A-1 | 60 (415) | 37 (255) | 30 | 79 HRB |
| A210 Gr. C | 70 (485) | 40 (275) | 30 | 89 HRB |
| A334 Gr. 1 | 55 (380) | 30 (205) | 35 | – |
| A334 Gr. 6 | 60 (415) | 35 (240) | 30 | – |
| A334 Gr. 3 | 65 (450) | 35 (240) | 30 | – |
| EN P235GH | 52–73 (360–500) | 34 (235) | 25 | – |
| EN P265GH | 59–83 (410–570) | 38 (265) | 23 | – |
| EN 10305-1 E235+N | 49–70 (340–480) | 34 (235) | 25 | – |
| EN 10305-1 E355+N | 71–91 (490–630) | 51.5 (355) | 22 | – |
ASTM A519 and the cold drawn conditions of EN 10305-1 get their strength from the condition you order, such as cold drawn hard, stress relieved, or annealed, so the mill test certificate lists the exact values.
Carbon Steel Seamless Tube Size and Weight Chart
Tubes are ordered by outside diameter and wall thickness. The first chart covers the metric sizes used for hydraulic and precision work, and the second covers larger tubes. Each figure shows weight in kg per metre for carbon steel.
Metric Precision Tubes
| OD mm | 1.0 mm Wall | 1.5 mm Wall | 2.0 mm Wall | 2.5 mm Wall | 3.0 mm Wall | 4.0 mm Wall | 5.0 mm Wall |
|---|---|---|---|---|---|---|---|
| 10 | 0.22 | 0.31 | 0.39 | 0.46 | 0.52 | – | – |
| 12 | 0.27 | 0.39 | 0.49 | 0.59 | 0.67 | – | – |
| 16 | 0.37 | 0.54 | 0.69 | 0.83 | 0.96 | 1.18 | – |
| 20 | 0.47 | 0.68 | 0.89 | 1.08 | 1.26 | 1.58 | 1.85 |
| 25 | 0.59 | 0.87 | 1.13 | 1.39 | 1.63 | 2.07 | 2.47 |
| 32 | 0.76 | 1.13 | 1.48 | 1.82 | 2.15 | 2.76 | 3.33 |
| 38 | 0.91 | 1.35 | 1.78 | 2.19 | 2.59 | 3.35 | 4.07 |
| 50 | 1.21 | 1.79 | 2.37 | 2.93 | 3.48 | 4.54 | 5.55 |
Larger Seamless Tubes
| OD mm | 3.2 mm Wall | 4.5 mm Wall | 6.3 mm Wall | 8.0 mm Wall | 10.0 mm Wall |
|---|---|---|---|---|---|
| 60.3 | 4.51 | 6.19 | 8.39 | 10.32 | 12.40 |
| 76.1 | 5.75 | 7.95 | 10.84 | 13.43 | 16.30 |
| 88.9 | 6.76 | 9.37 | 12.83 | 15.96 | 19.46 |
| 114.3 | 8.77 | 12.18 | 16.78 | 20.97 | 25.72 |
| 139.7 | 10.77 | 15.00 | 20.72 | 25.98 | 31.98 |
| 152.4 | 11.77 | 16.41 | 22.70 | 28.49 | 35.12 |
To work out the weight of any size, use Weight (kg/m) = (OD − Wall) × Wall × 0.02466, with both values in mm.
Available Sizes, Dimensions and Tolerances
We supply carbon steel seamless tubes from 1/4" to 6" OD, in walls from 22 BWG (0.71 mm) to 10 mm. Tubes do not use schedule numbers. You give the outside diameter and the wall thickness, and the standard sets how far each can vary. BWG is the gauge number for wall thickness in inch-based tubes, and a lower BWG means a thicker wall. For boiler tubes, ask whether the tolerance applies to the minimum wall or the average wall, because boiler makers design to the minimum.
Standard lengths are 6 m, 9 m, and 12 m, plus random lengths and exact cut lengths for heat exchangers. As a carbon steel seamless tubes supplier in India, we hold the common sizes in stock, subject to availability.
| Product | Available Sizes | Wall Thickness | Standard Lengths |
|---|---|---|---|
| Heat Exchanger and Condenser Tubes | 1/2" to 2" OD | 16 BWG to 10 BWG | 6 m / 12 m / exact cut |
| Boiler and Superheater Tubes | 3/4" to 6" OD | 2.0 mm to 10 mm | 6 m / 9 m / 12 m / exact cut |
| Hydraulic and Precision Tubes | 6 mm to 50 mm OD | 1.0 mm to 5 mm | 6 m / exact cut |
| Mechanical Tubes | 1/2" to 6" OD | 1.5 mm to 10 mm | 6 m / 12 m / exact cut |
| U-Bend Tubes | 1/2" to 2" OD | 16 BWG to 10 BWG | Made to drawing |
Carbon Steel Seamless Tubes We Manufacture and Supply
Our range as a carbon steel seamless tubes manufacturer covers heat exchanger tubes, condenser tubes, boiler tubes, economiser tubes, superheater tubes, hydraulic tubes, precision tubes, mechanical tubes, bearing tubes, and low temperature tubes. We supply them straight or bent, in hot finished or cold drawn condition, and in black, oiled, phosphated, or bright annealed finish. Each shipment carries the markings, heat numbers, and test reports your standard requires.
Applications of Carbon Steel Seamless Tubes
- Heat Exchangers and Condensers: Move heat between fluids in refineries, chemical plants, and power stations.
- Boilers and Economisers: Carry water and steam in industrial and power boilers.
- Hydraulic Cylinders and Lines: Hold high pressure oil in presses, cranes, and earth-moving machines.
- Automotive Parts: Form axles, steering columns, fuel lines, and suspension parts.
- Bearings and Rollers: Make races, sleeves, and conveyor rollers.
- Feedwater Heaters: Heat feed water in power plants.
- Low Temperature Plants: Serve LNG, ammonia, and cold storage lines with A334 tubes.
- Shipbuilding and Offshore: Carry fuel, oil, and cooling fluids.
- General Engineering: Become shafts, bushes, spacers, and structural parts.
Why Choose Us as Your Carbon Steel Seamless Tubes Supplier in India?
With 20+ years of experience, we understand the requirements of heat exchanger, boiler, hydraulic, mechanical, and precision tube applications. Our range covers ASTM A179, A192, A210, A334, A519, and EN 10305 specifications, with different grades, sizes, wall thicknesses, and delivery conditions available. We can also handle cold drawing, U-bending, cutting, cleaning, end finishing, and surface treatment based on the order requirements.
We support both regular and project-based requirements, with quality checks and documentation throughout the supply process. Material test certificates, heat numbers, inspection reports, and other required documents can be provided for traceability. With export experience across 85+ countries, we handle international packing and shipping requirements along with domestic orders. This experience makes us a reliable Carbon Steel Seamless Tubes Supplier in India for industrial and engineering applications.
Countries We Export Carbon Steel Seamless Tubes To
We export carbon steel seamless tubes to customers across 85+ countries, supporting heat exchanger, boiler, hydraulic, mechanical, automotive, and engineering applications. Our export orders include suitable packing, material protection, shipping documents, and inspection support based on the destination and project requirements.
North America: United States, Canada, Mexico
Middle East: UAE, Saudi Arabia, Qatar, Kuwait, Oman, Bahrain
Europe: UK, Germany, France, Italy, Netherlands, Spain
Asia Pacific: Australia, Singapore, Malaysia, Indonesia, Thailand, Vietnam
Africa: South Africa, Egypt, Nigeria, Kenya, Algeria
South America: Brazil, Argentina, Chile, Peru, Colombia
With established production and supply capabilities, we serve international requirements for different grades, sizes, standards, and finishes. Our experience as a Carbon Steel Seamless Tubes Manufacturer helps us manage bulk orders, project specifications, testing, documentation, and export requirements from one supply process.
Carbon Steel Seamless Tubes FAQs
Common questions about carbon steel seamless tube grades, sizes, standards, testing, and supply.
Which carbon steel seamless tube grade should I choose for a heat exchanger?
ASTM A179 is the standard choice for heat exchangers and condensers, because it is a soft, low carbon grade that expands and bends well. For boilers and superheaters, choose ASTM A192 or A210 instead.
What is the difference between ASTM A192 and A210 tubes?
ASTM A192 is a low carbon grade for high-pressure boilers. ASTM A210 has more carbon and manganese, so it is stronger and suits tubes under higher loads.
When should I pick cold drawn tubes instead of hot finished tubes?
Pick cold drawn tubes when you need tight size limits, a smooth surface, or thin walls. Pick hot finished tubes for heavier walls and lower cost.
What is the difference between a seamless tube and a seamless pipe?
You order a tube by exact outside diameter and wall thickness, and it holds tighter tolerances. You order a pipe by nominal size and schedule, and it mainly carries fluid.
Can you bend carbon steel seamless tubes into U-shapes?
Yes. We bend tubes to your radius for heat exchangers and cut them to your length.
What temperature range can carbon steel seamless tubes handle?
Carbon steel works well up to about 425°C for long service and down to about -29°C for ordinary grades. For colder service, use ASTM A334, and for hotter service, use alloy steel tubes.
Do carbon steel seamless tubes rust?
Yes, carbon steel rusts in air and water. We supply tubes oiled, phosphated, or bright annealed, and we cap the ends for storage and transit.
Do you supply tubes for hydraulic cylinders and lines?
Yes. We supply cold drawn tubes to EN 10305-1, EN 10305-4, and DIN 2391 for hydraulic and precision use.
What sizes do your carbon steel seamless tubes come in?
We supply tubes from 1/4" to 6" OD, in walls from 22 BWG to 10 mm. Other sizes are available on request.
What decides the price of carbon steel seamless tubes?
Steel price, grade, size, wall thickness, condition, tolerance class, quantity, and delivery port all shape the price. Send us your enquiry for a current quote.
Which certificate comes with the tubes?
Every order ships with an EN 10204 3.1 certificate. We issue 3.2 with third-party inspection on request.
Are you a carbon steel seamless tubes manufacturer or a supplier?
Both. We manufacture the tubes and also work as a carbon steel seamless tubes supplier in India, with ready stock of popular sizes.