Home > Seamless Tube
Seamless Tubes are engineered for applications where precision, high pressure, extreme temperature, or critical fluid purity are essential. Unlike welded tubes, seamless tubes are manufactured from a solid billet that is heated, pierced, and rolled into a tube with no weld seam.
The absence of a weld ensures:
This is why seamless tubes are the preferred choice for boilers, heat exchangers, hydraulic systems, condensers, instrumentation lines, precision engineering, and automotive applications.
Industries rely on seamless tubes when failure is not an option, whether it’s superheated steam, aggressive chemicals, critical heat transfer, or high-precision mechanical assemblies.
Seamless Tubes are produced using two primary methods:
The billet is heated and pierced using the Mannesmann process, then elongated and rolled.
Advantages:
Standards: ASTM A210, A213, EN 10216
After initial rolling, tubes are cold-drawn through dies to achieve exact tolerances.
Benefits:
Standards: ASTM A519, DIN 2391, EN 10305
With over a decade of experience and multi-material capability — from Stainless Steel to Carbon, Alloy, Duplex, and Nickel Alloys with Product Pipes, Tubes, Bars we serve the world’s most demanding industries with trust, traceability, and timely delivery.
| Feature | Seamless Tubes | Seamless Pipes |
|---|---|---|
| Primary Use | Heat transfer, precision, mechanical | Fluid transport |
| ID/OD Tolerance | Very High | High |
| Wall Thickness | Thinner, precise | Medium–Heavy |
| Surface Finish | Polished, BA, EP, honed | Mill finish |
| Common Applications | Boilers, condensers, exchangers, hydraulics | Oil & gas, refinery, chemical |
| Testing | Eddy current, hydro, NDT, expansion | Hydro, UT, NDT |
👉 Verdict: Tubes = precision & heat transfer. Pipes = flow transport.
We supply seamless tubes in:
Finishes: Annealed, Pickled, BA, Electropolished, Honed
Standards Covered:
This ensures compatibility with boilers, condensers, exchangers, instrumentation, automotive, hydraulic & power plant requirements.
Stainless Steel Seamless Tubes are used where corrosion resistance, heat transfer efficiency, and hygienic flow are essential. These tubes deliver uniform heat transfer performance and exceptional dimensional accuracy.
Grades Offered:
SS 304 / 304L / 316 / 316L / 321 / 347 / 310
Why engineers choose SS seamless tubes:
Applications:
Heat exchangers • Condensers • Instrumentation • Dairy & pharma • Chemical heaters
Carbon Steel Seamless Tubes are ideal for boiler tubes, mechanical tubing, automotive components, and hydraulic systems.
Common Grades:
SA210 Gr A1 / C, A106 Gr B, ST52, ST35, ST45, P235, P265
Advantages:
Applications:
Boiler tubes • Air heaters • Mechanical tubes • Hydraulic cylinders
Alloy Steel Seamless Tubes are engineered for extreme heat, steam, and pressure environments. Chromium, molybdenum, and vanadium enhance their high-temperature strength.
Grades Offered:
T11 • T12 • T22 • T91 • T5 • T9
Why choose Alloy Steel tubes:
Applications:
Superheater tubes • Power boilers • Furnace tubes • Refinery heater coils
Nickel alloys handle the harshest conditions: high heat, seawater, chlorides, and strong acids.
Common Grades:
Inconel 600 / 625
Incoloy 800H / 825
Hastelloy C22 / C276
Monel 400
Applications:
Desalination • Chemical reactors • Heat exchangers • Offshore platforms
Duplex combines strength and corrosion resistance, making it ideal for critical saltwater and chemical service.
Grades:
S31803 / 2205 • S32750 • S32760
Applications:
Heat exchangers • Evaporators • Marine cooling systems • Oil & gas
Copper-base alloy tubes offer excellent thermal conductivity, making them the preferred choice for heat exchanger and condenser applications.
Grades:
Cu-Ni 90/10 • Cu-Ni 70/30 • Brass Tubes • Admiralty Brass • Aluminium Brass
Applications:
Condenser tubes • Desalination • Marine heat exchangers • Radiators
Lightweight tubes with high strength-to-weight ratio and excellent corrosion resistance.
Applications:
Aerospace • Pneumatics • Heat exchangers • Automobile components
Titanium tubes are used in extreme corrosion environments, especially in marine, power, desalination, and nuclear applications.
Benefits:
| Standard Code | Description / Material Scope | Common Grades Supplied |
|---|---|---|
| ASTM A213 / SA213 | Boiler & heat exchanger tubes (SS & Alloy) | T11, T22, TP304, TP316L |
| ASTM A210 / SA210 | Carbon steel boiler tubes | Gr A1, C |
| ASTM A269 | SS instrumentation & general service tubes | 304/316 |
| ASTM A632 | SS small diameter tubing | 304/316 |
| ASTM A519 | Mechanical & CDS tubes | 1020, 4130, 4140 |
| ASTM A789 / A790 | Duplex & Super Duplex tubes | S31803, S32750 |
| ASTM B163 / B167 / B444 | Nickel alloy tubes | Inconel, Hastelloy, Monel |
| ASTM B338 | Titanium seamless tubes | Grade 2, Grade 5 |
| DIN 2391 / EN 10305 | CDS precision & hydraulic tubes | ST35/ST52 |
| EN 10216-5 | Stainless steel pressure tubes | 304/316 |
Boiler Tubes (A213 / A210 / A335)
Heat Exchanger Tubes
Condenser Tubes
Hydraulic & Precision Tubes (CDS / DOM)
Instrumentation Tubes (A269 / A632)
Mechanical Tubes (A519)
Seamless Tubes are critical in industries where precision, purity, heat transfer, and pressure performance are essential:Mechanical Engineering
Talk to our experts for technical support, pricing, and bulk orders.
Seamless Tube pricing varies significantly based on material, outer diameter, wall thickness, finish (BA/EP/Annealed), and application (boiler / exchanger / hydraulic / mechanical).
Below is an indicative pricing matrix:
| Material / Type | OD Range | Approx. Price (₹/kg) | Approx. Price (USD/kg) |
|---|---|---|---|
| Carbon Steel Seamless Tubes (A210 / A519) | 10–219 mm | ₹90 – ₹160 | $1.20 – $2.00 |
| Stainless Steel Seamless Tubes (A213 / A269) | 6–101 mm | ₹350 – ₹750 | $4.2 – $9.0 |
| Alloy Steel Seamless Tubes (A213 / A335) | 8–120 mm | ₹200 – ₹480 | $2.5 – $6.0 |
| Duplex & Super Duplex Tubes (A789 / A790) | 6–60 mm | ₹450 – ₹1100 | $5.5 – $13.5 |
| Nickel Alloy Tubes (B163 / B167 / B444) | 8–60 mm | ₹1800 – ₹4200 | $23 – $52 |
| Copper / Brass / Cu-Ni Tubes | 6–80 mm | ₹600 – ₹1200 | $7.5 – $15.0 |
| Titanium Tubes (B338) | 6–50 mm | ₹1800 – ₹3000 | $22 – $38 |
| Aluminium Tubes | 6–100 mm | ₹350 – ₹600 | $4.3 – $7.5 |
Bulk, project-based, or TPI-approved orders receive custom pricing (CIF/FOB).
(Mirroring the exact structure used in Welded Pipe & Hollow Section pages)
| Tube Type / Application | Relevant Standards | Used For |
|---|---|---|
| Boiler Tubes | A213 / A210 / A335 | Steam lines, superheaters, air heaters |
| Heat Exchanger Tubes | A213 / A269 / B163 | Heat transfer, U-bend exchangers |
| Condenser Tubes | Cu-Ni / Admiralty Brass / SS | Condensation and cooling systems |
| Hydraulic Tubes | DIN 2391 / EN 10305 | High-pressure fluid systems |
| Precision / Mechanical Tubes | A519 / EN 10305 | Automotive & machined components |
| Instrumentation Tubes | A269 / A632 | Control systems, pharma, chemical dosing |
| Bright Annealed Tubes | A269 BA Finish | Clean-room & hygienic tubing |
| Electropolished Tubes | EP Finish | Pharmaceutical & semiconductor lines |
| Air Heater Tubes | A210 / A213 | Sugar mills, boilers, thermal plants |
We export Seamless Tubes across regions with high precision and regulatory compliance demands.
Each shipment includes EN 10204 3.1 / 3.2 MTC, full traceability, and seaworthy packaging.
Every Seamless Tube undergoes rigorous QA/QC, matching the structure used in previous pages.
Testing includes:
TPI by SGS, TÜV, BV, LR, DNV is available on request.
Supporting EPC contractors, OEMs, boiler manufacturers, heat exchanger fabricators, and instrumentation system integrators.
52-A, Mulji Thackersi Bldg, Islampura Street, Shop No. 10, Near Alankar Cinema, Mumbai – 400 004
info@inoxsteelindia.com
+91 9820920268
They are used in boilers, heat exchangers, condensers, hydraulic systems, precision applications, and instrumentation.
A213, A210, A269, A632, A519, A789, A790, B163, B167, B444, B338, DIN 2391, EN 10305, EN 10216.
4 mm to 219 mm in various wall thicknesses.
Yes — Bright Annealed (BA) and Electropolished (EP) finishes are available for pharma and semiconductor applications.
Yes — U-bent, finned, and integral fin tubes are available.
Yes — SGS, BV, LR, DNV, TÜV inspections available.
Yes — to GCC, Africa, Europe, Americas, and APAC.