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Girgaon, Mumbai - 400004
Stainless Steel Seamless Tubes Manufacturer & Stockist in India (Since 1984)
Trusted Global Manufacturer & Stockist of Stainless Steel Seamless Tubes
Kamal Steels is a leading Stainless Steel Seamless Tubes Manufacturer and Stockist in India, established in 1984. A stainless steel seamless tube is manufactured without a welded joint, ensuring Excellent Structural Integrity, excellent pressure handling capability and dependable operation in critical industrial applications.
Our stainless steel seamless tubes are available in grades 304, 304L, 316, 316L, 321, 347 and 904L with a wide range of sizes, wall thicknesses, and specifications. These stainless steel seamless tubes are extensively used in heat exchangers, condensers, instrumentation systems, hydraulic equipment, boilers, chemical processing plants, pharmaceutical facilities, food processing units, and power generation industries.
Our Stainless Steel Seamless Tubes are sourced from approved manufacturers and supplied with excellent oxidation resistance, high tensile strength, dimensional accuracy, superior surface finish and Enhanced Product Life. All products are supplied according to international ASTM, ASME and ANSI standards and undergo strict quality control and testing procedures to ensure consistent performance.
As trusted stainless steel seamless tube stockists in India, we maintain ready inventory of seamless stainless steel tubes for industrial and engineering applications. Our commitment to quality products, immediate stock availability, competitive pricing, timely delivery and customer satisfaction has made Kamal Steels a preferred supplier of stainless steel seamless tubes in India and worldwide since 1984.
Looking for Best Price for SS Seamless Tubes?
Kamal Steels offers competitive pricing for Stainless Steel Seamless Tubes with ready stock availability for domestic and export requirements. Whether you need ASTM A213 TP304, TP304L, TP316, TP316L, TP321, TP347, ASTM A269 Stainless Steel Tubes, or 904L Seamless Tubes, our sales team can provide a fast quotation based on your required size, wall thickness, quantity and destination.
Get Quote / Best Price for Stainless Steel Seamless Tubes
- Instant Quotation Support (Fast Response)
- WhatsApp Inquiry Available
- ASTM A213 & ASTM A269 SS Seamless Tubes in Stock
- SS 304, 304L, 316 & 316L Seamless Tubes Available
- Heat Exchanger & Instrumentation Tubes Ready Stock
- Bulk Order & Project Pricing
- Mill Test Certificate (MTC) Available
- Third Party Inspection (TPI) Support
- Export Documentation Support
- Ready Stock Dispatch Worldwide
Stainless Steel Seamless Tube Specifications
| Product Name | Stainless Steel Seamless Tubes |
|---|---|
| Brand | Kamal Steels |
| Material | Stainless Steel |
| Type | Seamless Tube |
| Form | Round, Square, Rectangular |
| Outer Diameter | 6 mm to 219 mm |
| Wall Thickness | 0.5 mm to 25 mm |
| Length | Single Random, Double Random, Cut Length |
| Tube End | Plain End, Beveled End |
| Surface Finish | Annealed, Pickled, Polished, Bright Annealed |
| Standards | ASTM A213, ASTM A269, ASTM A249, ASME SA213 |
| Tube Schedules | SCH 5S to SCH 80S |
Ready Stock of Stainless Steel Seamless Tubes
Kamal Steels maintains a comprehensive inventory of Stainless Steel Seamless Tubes in various grades, sizes and wall thicknesses for immediate supply to domestic and international customers. Our ready stock availability helps minimize procurement delays and supports urgent project requirements across multiple industries.
Available Grades in Ready Stock:
- SS 304 Seamless Tube
- SS 304L Seamless Tube
- SS 316 Seamless Tube
- SS 316L Seamless Tube
- SS 321 Seamless Tube
- SS 347 Seamless Tube
- SS 904L Seamless Tube
Our stock includes seamless tubes in a wide range of outside diameters, wall thicknesses and lengths suitable for heat exchangers, condensers, instrumentation systems, hydraulic lines, chemical processing, oil & gas, pharmaceutical, food processing, power generation and marine applications.
All Stainless Steel Seamless Tubes are manufactured in accordance with international standards such as ASTM A213, ASTM A269 and ASTM A511 and are supplied with Material Test Certificates (MTC) to ensure complete traceability and quality assurance.
We also offer third-party inspection, custom cutting, polishing, special packaging and export documentation support to meet specific project and customer requirements.
Contact Kamal Steels for current stock availability, bulk quantity requirements, custom sizes and the latest prices on Stainless Steel Seamless Tubes available for immediate dispatch across India and worldwide export markets.
Stainless Steel Seamless Tube Price in India
Kamal Steels offers competitive Stainless Steel Seamless Tube Price in India for a wide range of industrial, heat exchanger, instrumentation, hydraulic and process applications. We supply SS 304 Seamless Tubes, SS 304L Seamless Tubes, SS 316 Seamless Tubes and SS 316L Seamless Tubes in various outside diameters, wall thicknesses and lengths.
The price of stainless steel seamless tubes depends on the tube size, wall thickness, material grade, quantity and testing requirements. We maintain ready stock of seamless stainless steel tubes for immediate supply across India and export markets.
Factors Affecting Stainless Steel Seamless Tube Price
- Stainless Steel Grade (304, 304L, 316, 316L, 321, 310, etc.)
- Tube Outside Diameter (OD)
- Wall Thickness or Gauge
- Tube Length Requirements
- Order Quantity
- Testing and Inspection Requirements
- Surface Finish Requirements
- Current Stainless Steel Market Prices
- Packing and Delivery Location
We supply SS Seamless Tubes manufactured in accordance with ASTM A213, ASTM A269 and ASTM A511 specifications. All tubes are supplied with mill test certificates and complete quality documentation.
Contact our sales team for the latest stainless steel seamless tube price list, stock availability and delivery schedule. We offer competitive prices for both domestic and international customers.
Stainless Steel Seamless Tube Sizes & Dimensions
Stainless Steel Seamless Tube Weight Chart
| Tube Size | OD (mm) | 10G | 12G | 14G | 16G | 18G | 20G | 22G |
|---|---|---|---|---|---|---|---|---|
| 3.25 mm | 2.64 mm | 2.03 mm | 1.65 mm | 1.21 mm | 0.91 mm | 0.71 mm | ||
| 1/4" | 6.35 | 0.25 | 0.20 | 0.16 | 0.14 | 0.10 | 0.08 | 0.06 |
| 5/16" | 7.94 | 0.38 | 0.31 | 0.25 | 0.21 | 0.16 | 0.12 | 0.10 |
| 3/8" | 9.53 | 0.50 | 0.41 | 0.33 | 0.28 | 0.21 | 0.16 | 0.13 |
| 1/2" | 12.70 | 0.76 | 0.62 | 0.50 | 0.42 | 0.31 | 0.24 | 0.19 |
| 5/8" | 15.88 | 1.01 | 0.83 | 0.67 | 0.56 | 0.42 | 0.32 | 0.26 |
| 3/4" | 19.05 | 1.26 | 1.03 | 0.84 | 0.70 | 0.53 | 0.40 | 0.32 |
| 7/8" | 22.23 | 1.51 | 1.24 | 1.01 | 0.84 | 0.63 | 0.48 | 0.39 |
| 1" | 25.40 | 1.76 | 1.45 | 1.18 | 0.98 | 0.74 | 0.56 | 0.45 |
| 1 1/4" | 31.75 | 2.27 | 1.87 | 1.52 | 1.27 | 0.95 | 0.72 | 0.58 |
| 1 1/2" | 38.10 | 2.78 | 2.28 | 1.86 | 1.55 | 1.16 | 0.88 | 0.71 |
| 2" | 50.80 | 3.79 | 3.12 | 2.54 | 2.11 | 1.59 | 1.21 | 0.97 |
| 2 1/2" | 63.50 | 4.80 | 3.95 | 3.22 | 2.68 | 2.01 | 1.53 | 1.23 |
| 3" | 76.20 | 5.82 | 4.78 | 3.89 | 3.24 | 2.43 | 1.85 | 1.49 |
| 3 1/2" | 88.90 | 6.83 | 5.62 | 4.57 | 3.81 | 2.86 | 2.18 | 1.75 |
| 4" | 101.60 | 7.85 | 6.45 | 5.25 | 4.37 | 3.28 | 2.50 | 2.01 |
Gauge Thickness:
- 10G = 3.25 mm
- 12G = 2.64 mm
- 14G = 2.03 mm
- 16G = 1.65 mm
- 18G = 1.21 mm
- 20G = 0.91 mm
- 22G = 0.71 mm
Formula: Weight (Kg/Mtr) = (OD − WT) × WT × 0.02466
Chemical Composition of Stainless Steel Seamless Tubes
Stainless Steel Tubing are manufactured using various stainless steel grades with controlled chemical composition to ensure excellent corrosion protection, strength and Long-Term Durability. The alloying elements such as chromium, nickel and molybdenum improve durability and performance in industrial applications.
| Grade | Cr % | Ni % | Mo % | C % | Mn % | Si % |
|---|---|---|---|---|---|---|
| 304 / 304L | 18.0 – 20.0 | 8.0 – 13.0 | — | 0.08 max / 0.03 max | 2.0 max | 1.0 max |
| 316 / 316L | 16.0 – 18.0 | 10.0 – 14.0 | 2.0 – 3.0 | 0.08 max / 0.03 max | 2.0 max | 1.0 max |
| 321 | 17.0 – 19.0 | 9.0 – 12.0 | — | 0.08 max | 2.0 max | 1.0 max |
| 347 | 17.0 – 19.0 | 9.0 – 13.0 | — | 0.08 max | 2.0 max | 1.0 max |
| 904L | 19.0 – 23.0 | 23.0 – 28.0 | 4.0 – 5.0 | 0.02 max | 2.0 max | 1.0 max |
Stainless Steel Seamless Tube Standards
| ASTM Standards | ASME Standards | ANSI Standards |
|---|---|---|
| ASTM A213 Tube | ASME SA213 | ANSI B36.19 |
| ASTM A269 Tube | ASME SA269 | - |
| ASTM A249 Tube | ASME SA249 | - |
| ASTM A554 | - | - |
Mechanical Properties of Stainless Steel Seamless Tubes
Tensile Strength
Tensile strength indicates the maximum stress Seamless Stainless Tubes can withstand before failure. High tensile strength makes these tubes suitable for pressure systems, heat exchangers and critical industrial applications.
Yield Strength
Yield strength represents the stress level at which permanent deformation begins. Industrial Stainless Steel Tubes provide reliable yield strength for applications involving high pressure and mechanical load conditions.
Elongation
Elongation measures ductility and the ability of seamless tubes to bend or expand without cracking. Higher elongation improves fabrication, forming and installation performance.
| Grade | Tensile Strength (MPa, min) | Yield Strength (MPa, min) | Elongation (% min) |
|---|---|---|---|
| SS 304 | 515 | 205 | 40% |
| SS 304L | 485 | 170 | 40% |
| SS 316 | 515 | 205 | 40% |
| SS 316L | 485 | 170 | 40% |
| SS 321 | 515 | 205 | 40% |
| SS 904L | 490 | 220 | 35% |
Available Grades of Stainless Steel Seamless Tubes
Kamal Steels manufactures the following grades of stainless steel seamless tubes:
- Stainless Steel 304 Seamless Tubes
- Stainless Steel 304H Seamless Tubes
- Stainless Steel 304L Seamless Tubes
- Stainless Steel 310 Seamless Tubes
- Stainless Steel 310S Seamless Tubes
- Stainless Steel 310H Seamless Tubes
- Stainless Steel 316 Seamless Tubes
- Stainless Steel 316L Seamless Tubes
- Stainless Steel 316H Seamless Tubes
Stainless Steel Seamless Tube vs Welded Tube
Stainless steel tubes are available in seamless and welded construction. The selection depends on pressure requirements, application conditions, budget and project specifications.
| Factor | Seamless Tube | Welded Tube |
|---|---|---|
| Manufacturing Method | Produced from solid billets without welding | Manufactured by welding stainless steel strip |
| Pressure Resistance | Excellent | Good |
| Strength | Higher | Moderate to High |
| Corrosion Resistance | Excellent | Excellent |
| Surface Finish | Good | Excellent |
| Availability | Limited in large sizes | Available in wider size range |
| Cost | Higher | More Economical |
| Typical Applications | High-pressure, heat exchanger, critical services | General industrial, structural and process piping |
ASTM A213 vs ASTM A269 Stainless Steel Tubes
ASTM A213 and ASTM A269 are widely used specifications for stainless steel tubes. While both cover seamless stainless steel tubing, their intended applications and testing requirements differ.
| Property | ASTM A213 Tube | ASTM A269 Tube |
|---|---|---|
| Application | Boilers, Superheaters and Heat Exchangers | General Service and Instrumentation |
| Tube Type | Seamless Ferritic & Austenitic Tubes | Seamless and Welded Austenitic Tubes |
| Pressure Service | High Pressure | Moderate Pressure |
| Temperature Service | High Temperature Applications | General Temperature Applications |
| Testing Requirements | More Stringent | Standard Quality Testing |
| Common Industries | Power Plants, Refineries, Petrochemicals | Food Processing, Pharmaceutical, Chemical Plants |
| Cost | Generally Higher | Generally Lower |
How to Select Stainless Steel Seamless Tubes?
Selecting the right stainless steel seamless tube is important to ensure stable performance, eliable Service Performance and cost-effective operation. The following factors should be considered before choosing a seamless tube for your application.
Temperature Requirements
The operating temperature plays a major role in material selection. Applications involving high temperatures require stainless steel grades that can maintain strength and corrosion resistance under thermal stress.
- SS 304 / 304L – Suitable for general-purpose applications and moderate temperatures.
- SS 316 / 316L – Offers improved corrosion resistance and performs well in elevated temperatures.
- SS 321 – Ideal for continuous high-temperature service due to titanium stabilization.
- SS 347 – Recommended for high-temperature environments where resistance to intergranular corrosion is required.
Corrosion Environment
Evaluate the type of media flowing through the tube and the surrounding environment before selecting the material grade.
- SS 304 – Suitable for water, food processing and mild chemical environments.
- SS 316 – Excellent resistance to chlorides, seawater and chemical processing applications.
- SS 904L – Designed for highly corrosive environments involving acids and aggressive chemicals.
- Marine and offshore applications generally require higher-alloy grades for enhanced corrosion resistance.
Pressure Rating
Seamless tubes are preferred for high-pressure applications because they do not contain welded joints.
When selecting a tube, consider:
- Operating Pressure
- Pressure Fluctuations
- Safety Factors
- Applicable ASTM or ASME Standards
Higher wall thickness generally provides greater pressure-handling capability and improved structural integrity.
Tube Dimensions
Choose the appropriate dimensions based on flow requirements and installation conditions.
Key dimensions include:
- Outside Diameter (OD)
- Wall Thickness (WT)
- Tube Length
- Tube Schedule
Proper sizing helps maintain flow efficiency, pressure performance and overall system reliability.
Material Grade Selection
Different stainless steel grades offer unique advantages depending on the application.
| Grade | Typical Application |
|---|---|
| SS 304 | General Industrial Applications |
| SS 304L | Welded Systems Requiring Improved Corrosion Resistance |
| SS 316 | Chemical Processing and Marine Applications |
| SS 316L | Pharmaceutical and Food Processing Industries |
| SS 321 | High-Temperature Service |
| SS 347 | High-Temperature Pressure Systems |
| SS 904L | Highly Corrosive Environments |
Selecting the correct stainless steel seamless tube grade ensures optimal performance, durability, safety and long-term cost savings across industrial and engineering applications.
Stainless Steel Seamless Tube Manufacturing Process
Stainless steel seamless tubes are manufactured from solid stainless steel billets using hot piercing and rolling processes. As no welding is involved, seamless tubes offer high strength, excellent pressure resistance and superior reliability.
| Step 1 | Billet Selection – Premium stainless steel billets are selected as per grade and specification. |
|---|---|
| Step 2 | Heating & Piercing – Billets are heated and pierced to create a hollow tube shell. |
| Step 3 | Rolling & Sizing – The hollow shell is elongated and sized to achieve required dimensions. |
| Step 4 | Annealing & Pickling – Tubes are heat treated and cleaned to enhance corrosion resistance. |
| Step 5 | Straightening & Cutting – Tubes are straightened and cut to standard or custom lengths. |
| Step 6 | Testing & Inspection – Each tube undergoes dimensional, mechanical and non-destructive testing. |
| Step 7 | Packing & Dispatch – Finished tubes are marked, packed and prepared for shipment. |
Why Choose Stainless Steel Seamless Tubes?
Stainless Steel Seamless Tubes are widely preferred in industrial, engineering and process applications because they are manufactured without welded joints, providing High Load Bearing Capacity, reliability and pressure-handling capability. Their outstanding chemical resistance, precision dimensions and long service life make them an ideal choice for critical operating environments.
| Advantage | Benefit |
|---|---|
| Seamless Construction | No welded joints, resulting in improved structural integrity and leak-free performance. |
| Pressure Bearing Performance | Suitable for high-pressure and high-temperature applications in demanding industries. |
| Superior Protection Against Corrosion | Provides protection against rust, chemicals, moisture and corrosive environments. |
| Superior Mechanical Strength | Offers higher strength and durability compared to conventional tubing solutions. |
| Dimensional Accuracy | Manufactured with precise tolerances for reliable installation and performance. |
| Smooth Surface Finish | Improves fluid flow efficiency and reduces contamination risks. |
| High Temperature Performance | Maintains strength and stability under elevated temperatures. |
| Extended Operational Life | Ensures reliable operation with minimal maintenance requirements. |
| Wide Grade Availability | Available in SS 304, 304L, 316, 316L, 321, 347 and 904L grades. |
| Versatile Applications | Used in heat exchangers, instrumentation systems, pharmaceuticals, food processing, chemical plants and power generation industries. |
Due to their exceptional corrosion resistance, high strength, precision manufacturing and ability to withstand demanding operating conditions, Stainless Steel Seamless Tubes are the preferred choice for critical industrial applications requiring safety, reliability and long-term performance.
Why Choose Kamal Steels?
- Manufacturer & Stockist Since 1984
- Large Ready Stock Available
- ASTM & ASME Standard Tubes
- Third Party Inspection
- Mill Test Certificates Provided
- PAN India & Export Supply
- Competitive Prices
- Fast Delivery Support
Benefits of Stainless Steel Seamless Tubes
- Enhanced Resistance to Aggressive Media: Stainless steel seamless tubes provide excellent resistance against rust, moisture, chemicals and corrosive environments for long-term industrial use.
- High Temperature Performance: These tubes maintain strength and dimensional stability under elevated temperature and pressure conditions.
- Weld-Free Construction: Manufactured without welded joints, seamless tubes offer better structural integrity and leak-proof performance.
- Smooth Surface Finish: Smooth internal and external surfaces improve flow efficiency and reduce scaling or contamination risks.
- Pressure Handling Capability: Stainless steel seamless tubes are suitable for high-pressure systems and critical industrial applications.
Applications of Stainless Steel Seamless Tubes
Seamless Stainless Tubes are widely used in industries requiring high Rust Resistance, accurate sizing and reliable pressure handling performance.
Oil & Gas Industry
Used for fluid transportation, instrumentation systems and high-pressure applications in offshore and onshore operations.
Chemical Processing Plants
Suitable for handling corrosive chemicals, acids and industrial process fluids safely.
Heat Exchanger Systems
Widely used in heat exchangers and condensers because of their temperature resistance and smooth internal finish.
Power Generation Plants
Applied in steam pipelines, boilers and thermal power systems operating under high pressure and temperature.
Pharmaceutical Industry
Preferred for hygienic and contamination-free fluid transfer applications in pharmaceutical manufacturing.
Food & Beverage Industry
Used in sanitary processing systems requiring corrosion-resistant and clean tubing surfaces.
Water Treatment Plants
Suitable for desalination, filtration and water purification systems because of corrosion-resistant properties.
Aerospace Industry
Used in aerospace tubing systems where strength, reliability and lightweight performance are important.
Marine Industry
Marine applications require durable and corrosion-resistant tubing systems capable of handling seawater exposure.
General Engineering
Widely used in industrial fabrication, instrumentation and mechanical engineering applications.
Industries We Serve
Kamal Steels supplies stainless steel seamless tubes to various industries worldwide for precision tubing and corrosion-resistant applications.
Petrochemical Industry
Our seamless tubes are widely used in petrochemical processing systems operating under harsh conditions.
Chemical Industry
Chemical plants use Seamless Stainless Tubes for safe handling of corrosive fluids and chemicals.
Energy & Power Industry
Used in boilers, condensers and thermal systems requiring reliable high-temperature tubing solutions.
Pharmaceutical Industry
Pharmaceutical plants require hygienic and precision tubing systems for clean process operations.
Offshore & Marine Industry
Marine environments require corrosion-resistant seamless tubes for seawater and offshore systems.
Engineering Industry
Engineering sectors use SS Seamless Tubes for fabrication, instrumentation and mechanical systems.
Automobile Industry
Used in automotive exhaust, fuel and hydraulic systems requiring durable tubing solutions.
Packaging, Testing & Inspection
Packaging
- Wooden Boxes: Stainless steel seamless tubes are packed securely in wooden boxes for safe transportation and export handling.
- Bundle Packing: Tubes are bundled properly for easy loading, unloading and storage during shipment.
- Plastic End Caps: Protective caps are used to prevent dust, moisture and external damage during transit.
- Export Standard Packaging: All products are packed according to international export standards for safe global delivery.
- Surface Protection: Protective wrapping is used to maintain surface finish and prevent scratches during handling.
Testing & Inspection
- Hydrostatic Testing: Ensures tubes can withstand high internal pressure without leakage or failure.
- Ultrasonic Testing: Detects internal defects and confirms structural integrity of seamless tubes.
- PMI Testing: Positive Material Identification verifies material composition and grade accuracy.
- Eddy Current Testing: Ensures surface quality and detects defects in tubing systems.
- Flattening & Flaring Tests: Evaluates tube flexibility, expansion capability and fabrication performance.
- Visual & Dimensional Inspection: Confirms surface finish, straightness and dimensional accuracy according to standards.
- Third Party Inspection: Independent inspection agencies verify quality compliance before dispatch.
Frequently Asked Questions
A stainless steel seamless tube is manufactured without any welded joint. It is produced from a solid stainless steel billet through piercing and rolling processes, providing Enhanced Mechanical Strength, excellent pressure resistance and consistent performance in critical industrial applications.
Stainless steel seamless tubes are available in various grades including SS 304, SS 304L, SS 316, SS 316L, SS 321, SS 347, SS 310S and SS 904L. The choice of grade depends on the application, operating temperature and corrosion environment.
Stainless steel seamless tubes are commonly manufactured according to ASTM A213, ASTM A269, ASTM A249, ASME SA213 and ASME SA269 standards to ensure dimensional accuracy, mechanical strength and chemical resistance.
Seamless tubes are manufactured without a welded seam, offering higher pressure resistance, better structural integrity and improved reliability. Welded tubes are produced by welding steel strips and are generally used in less demanding applications.
Stainless steel seamless tubes are widely used in heat exchangers, condensers, boilers, hydraulic systems, instrumentation lines, chemical processing plants, pharmaceutical industries, food processing units, power plants and oil & gas facilities.
Stainless steel seamless tubes are available in outside diameters ranging from 6 mm to 219 mm, with wall thicknesses from 0.5 mm to 25 mm. Custom sizes and cut lengths can also be supplied based on project requirements.
SS 316 and SS 316L are commonly recommended for corrosive environments due to their molybdenum content, which improves resistance to chemicals, chlorides and seawater. For highly aggressive conditions, SS 904L may be preferred.
Stainless steel seamless tubes undergo Hydrostatic Testing, Ultrasonic Testing (UT), Eddy Current Testing (ET), PMI Testing, Flattening Tests, Flaring Tests, Chemical Analysis, Mechanical Testing and Dimensional Inspection to ensure product quality and compliance.
Yes, stainless steel seamless tubes are supplied with Mill Test Certificates (MTC) that verify chemical composition, mechanical properties and compliance with relevant ASTM and ASME standards.
The price of stainless steel seamless tubes depends on the grade, size, wall thickness, quantity, testing requirements and delivery location. Contact our sales team with your specifications to receive the latest pricing, stock availability and delivery schedule.