Stainless Steel Seamless Pipes & Tubes Manufacturer & Supplier
Amardeep Steel is a leading manufacturer, supplier, and exporter of premium quality Stainless Steel Seamless Pipes & Tubes. Engineered for exceptional performance in critical and demanding environments, our Seamless Pipes & Tubes offer unparalleled integrity, superior corrosion resistance, and excellent mechanical properties. Trusted by industries worldwide, Amardeep Steel delivers Stainless Steel Seamless Pipes and Stainless steel seamless tubes that meet the most stringent international standards and project specifications.
What Are Seamless Stainless Steel Pipes?
Seamless stainless steel pipes are high-quality cylindrical tubes manufactured without any welded joints, ensuring superior strength, durability, and corrosion resistance. These seamless stainless steel pipes are made by piercing solid stainless steel bars and then extending them to the desired dimensions. Unlike welded pipes, seamless steel pipes have a uniform structure, making them ideal for high-pressure, high-temperature, and critical applications in industries such as oil & gas, pharmaceuticals, food processing, and power plants. Their smooth interior surface enhances fluid flow efficiency, reducing the risk of contamination and blockages.
Why Choose Stainless Steel Seamless Tube?
Stainless steel seamless tubes offer several advantages over welded alternatives, making them the preferred choice for demanding applications. Their seamless construction eliminates weak points, providing better mechanical strength and resistance to pressure fluctuations. They also exhibit excellent corrosion resistance, ensuring long-term durability in harsh environments. Additionally, stainless steel seamless tubes have a smooth inner surface, improving fluid flow and reducing maintenance costs. These properties make them ideal for applications in chemical processing, aerospace, automotive, and heat exchanger systems, where precision and reliability are crucial.
Stainless Steel Seamless Pipes & Tubes Specifications
Amardeep Steel provides Stainless Steel Seamless Pipes & Tubes conforming to a wide array of international specifications to meet diverse and critical project requirements:
| Parameter | Details |
|---|---|
| Size Range | 6 NB to 1200 NB |
| Outer Diameter (OD) | 1/8” NPS to 12” NPS |
| Wall Thickness (WT) | 0.6 mm to 12.7 mm |
| Schedules | SCH 5, 10, 20, 30, 40, 60, 80, 100, 120, 140, 160, XXS |
| Length Options | Single Random, Double Random, or Cut-to-Length |
| Standards | ASTM A312 / ASTM SA312 |
| Tube Shapes | Round, Square, Rectangle, Hydraulic, Honed |
| End Finishes | Plain End, Beveled End |
| Product Type | Standards | Dimensions | Grades Available |
|---|---|---|---|
| Seamless Austenitic Stainless Steel Pipes | ASTM A312/A312M, ASME SA312/SA312M | OD: 1/4”–20”WT: SCH5S–SCH80S | TP304, TP304L, TP304H, TP310, TP310S, TP316, TP316L, TP316Ti, TP317, TP317L, TP321, TP321H, TP347, TP347H |
| Stainless Steel Tubing for General Service | ASTM A269, ASME SA269 | OD: 6.0–50.8 mmWT: 0.8–10.0 mm | TP304, TP304L, TP304H, TP310, TP310S, TP316, TP316L, TP316Ti, TP317, TP317L, TP321, TP321H, TP347, TP347H |
| Alloy Steel Boiler, Super Heater & Heat Exchanger Tubes | ASTM A213/A213M, ASME SA213/SA213M | OD: 6.0–50.8 mmWT: 0.8–10.0 mm | TP304, TP304L, TP304H, TP310, TP310S, TP316, TP316L, TP316Ti, TP317, TP317L, TP321, TP321H, TP347, TP347H |
| Duplex SS Tubing for General Service | ASTM A789 / A789M | OD: 19.0–60.5 mmWT: 1.2–5.0 mm | S31803, S32205, S32750 |
| Duplex Stainless Steel Pipes | ASTM A790 / A790M | OD: 3/4”–10”WT: SCH5S–SCH80S | S31803, S32205, S32750 |
| Stainless Steel Mechanical Tubing | ASTM A511 | OD: 6.0–50.8 mmWT: 1.8–10.0 mm | MT304, MT304L, MT304H, MT310, MT310S, MT316, MT316L, MT317, MT317L, MT321, MT321H, MT347 |
| SS Tubes for Pressure Purposes | EN 10216, DIN 17456, 17458 | OD: 6.0–530.0 mmWT: 0.8–34.0 mm | 1.4301, 1.4307, 1.4541, 1.4401, 1.4404, 1.4571, 1.4878, 1.4432, 1.4462 |
Chemical Composition & Mechanical Properties
The following provides typical property ranges for commonly used austenitic Stainless Steel Seamless Pipes & Tubes. Specific values are always confirmed by Mill Test Certificates (MTCs).
Typical Chemical Composition (wt %) for Common Austenitic Stainless Steels
| Element | 304L (UNS S30403) (%) | 316L (UNS S31603) (%) |
|---|---|---|
| Carbon (C) | 0.03 max | 0.03 max |
| Chromium (Cr) | 18.0 - 20.0 | 16.0 - 18.0 |
| Nickel (Ni) | 8.0 - 12.0 | 10.0 - 14.0 |
| Moly (Mo) | -- | 2.00 - 3.00 |
| Mang (Mn) | 2.00 max | 2.00 max |
| Silicon (Si) | 0.75 max | 0.75 max |
Typical Mechanical Properties for Austenitic Stainless Steels
| Property | 304L (Typical Min) | 316L (Typical Min) |
|---|---|---|
| Tensile Strength | 70 ksi (485 MPa) | 70 ksi (485 MPa) |
| Yield Strength | 25 ksi (170 MPa) | 25 ksi (170 MPa) |
| Elongation (in 2") | 40% | 40% |
| Hardness | Rockwell B 90 / Brinell 187 | Rockwell B 90 / Brinell 187 |
Outside Diameter, Wall Thickness, and Tolerance for SS Seamless Pipes & Tubes
Amardeep Steel ensures precise dimensional control for all its SS seamless pipes and SS seamless tubes:
| OD & WT Ranges: | As detailed in the specifications section, covering a broad spectrum of applications from instrumentation to large process piping. |
|---|---|
| Tolerances | Strictly adhering to relevant ASTM standards (e.g., A999/A999M for general requirements applicable to A312 pipe, A1016/A1016M for A213/A269 tubes). |
| Lengths | Standard lengths include 6 meters (approx. 20 ft) and random lengths. Custom cut-to-length services are available to meet specific project needs. |
Types & Forms of Stainless Steel Seamless Pipes & Tubes
Our Stainless Steel Seamless Pipes & Tubes are available in various forms to suit diverse application requirements:
| Category | Type / Description |
|---|---|
| Manufacturing Method | Exclusively Seamless (Hot Finished or Cold Drawn) |
| Hot Finished Seamless (HFS): For larger diameters and heavier wall thicknesses. | |
| Cold Drawn Seamless (CDS): Tighter dimensional tolerances, improved surface finish, better mechanical properties. Common in heat exchangers & instrumentation. | |
| Shapes | Round (Primary): Essential for pressure containment. Custom shapes available on request. |
| Finishes | Annealed & Pickled (AP): Matte, corrosion-resistant finish. Standard for most stainless steel pipes. |
| Bright Annealed (BA): Bright, reflective finish. Ideal for hygienic and instrumentation tubing. |
Applications of Seamless Steel Pipe
Seamless steel pipes are widely used across various industries due to their strength, reliability, and corrosion resistance. They play a crucial role in oil & gas pipelines, chemical and petrochemical industries, heat exchangers, hydraulic systems, and power generation plants. Additionally, they are commonly used in automotive, aerospace, and construction projects where high-pressure and high-temperature conditions demand superior material performance.
Grades & Specifications of SS Seamless Pipes
Stainless steel seamless pipes come in different grades and specifications, each suited for specific applications. Common grades include SS 304, SS 316, SS 321, and SS 347, each offering distinct advantages in terms of corrosion resistance, temperature tolerance, and mechanical properties. These pipes are manufactured following international standards such as ASTM A312, A213, and A269, ensuring compliance with quality and safety requirements.
Application & Specification (Seamless) :
| Oil & Gas Sector | |
|---|---|
| API | 5L Seamless Steel Pipe |
| API | 5CT Seamless Steel Pipe |
| IS | 1978, 1979 |
| Automotive Industry | |
| ASTM | A-519 Seamless Steel Pipe |
| SAE | 1010, 1012, 1020, 1040, 1518, 4130 |
| DIN | 2391, 1629 |
| BS | 980, 6323 (Pt-V) |
| IS | 3601, 3074 |
| Hydrocarbon Process Industry | |
| ASTM | A-53, A-106, A-333, A-334, A-335, A-519 Seamless Steel Pipe |
| BS | 3602,3603 |
| IS | 6286 |
| Bearing Industry | |
| SAE | 52100 Seamless Steel Pipe |
| Hydraulic Cylinder | |
| SAE | 1026, 1518 Seamless Steel Pipe |
| IS | 6631 |
| DIN | 1629 |
| Boiler, Heat Exchanger, Superheater & Condenser | |
| ASTM | A-179, A-192, A-209, A-210, A-213, A-333, A-334,A-556 |
| BS | 3059 (Pt-I Pt-II) |
| IS | 1914, 2416, 11714 |
| DIN | 17175 |
| Railways | |
| IS | 1239 (Pt-I),1161 Seamless Steel Pipe |
| BS | 980 Seamless Steel Pipe |
| Mechanical, Structural General Engineering | |
| ASTM | A-252, A-268, A-269, A-500, A-501, A-519, A-589 Seamless Steel Pipe |
| DIN | 1629, 2391 |
| BS | 806, 1775, 3601, 6323 |
| IS | 1161, 3601 |
Why Choose Us as Your Stainless Steel Pipes Manufacturer?
Choosing the right stainless steel pipe manufacturer ensures product quality, durability, and reliability. Amardeep Steel Centre is one of leading manufacturers, exporters and suppliers of superior quality Seamless Steel Pipe in different specifications, size, grades & thickness as per the clients requirements. The SS Seamless Pipes offered by us are appreciated for various features such as durability, fine finishing, corrosion resistance and dimensional accuracy. These pipes are manufactured using high-quality raw materials and state-of-the-art quality control measures. These pipes are used in various application industries like oil and gas, automotive, shipbuilding, power plants, sugar mills and distilleries, cement and construction industries etc.
Related Products
Amardeep Steel offers a comprehensive portfolio of stainless steel and other products to complement your seamless pipe and tube needs:
- ASTM A213/A213M Seamless Tubes
- Cold Drawn Seamless Tubes
- Stainless Steel 304 Seamless Pipes & Tubes
- API 5L Seamless Pipes
- Seamless Boiler Steel Pipes
- Precision Tubes
- Hot Rolled Seamless Steel Tubes
- Hot Finished Seamless Mechanical Tubes
Get Your Stainless Steel Seamless Pipes & Tubes Price
For the latest price, detailed technical specifications, or to discuss your specific project requirements for Stainless Steel Seamless Pipes & Tubes, please contact the expert team at Amardeep Steel Centre today. We are leading Stainless steel pipe suppliers and Stainless steel tube manufacturers, ready to provide you with high-performance Seamless Pipes & Tubes, competitive quotations, and exceptional service for your most critical applications.
FAQs About Stainless Steel Seamless Pipes
1. What is the difference between seamless and welded steel pipes?
Seamless steel pipes are made from a single solid billet, ensuring no welded joints, while welded steel pipes are formed by rolling a steel plate and welding the seam. Seamless pipes offer better strength, uniformity, and pressure resistance, whereas welded pipes are more cost-effective and suitable for low to moderate pressure applications.
2. Which is better, seamless or ERW pipe?
Seamless pipes are preferred for high-pressure and high-temperature applications due to their superior strength and durability. ERW (Electric Resistance Welded) pipes, on the other hand, are more economical and sufficient for lower-pressure applications like water and structural piping. The choice depends on the intended use and industry requirements.
3. What is the difference between seamless steel and carbon steel?
Seamless steel refers to pipes made without welds, ensuring high strength and uniformity. Carbon steel, on the other hand, refers to steel with a high carbon content, which can be either seamless or welded. While seamless steel pipes can be made from carbon steel, not all carbon steel pipes are seamless.
4. How to identify a seamless pipe?
Seamless pipes can be identified by their smooth, uniform surface without any visible weld seams. They also tend to have consistent wall thickness and are usually marked with specifications like "SMLS" (seamless) in their labeling. Additionally, non-destructive testing methods like ultrasonic or radiographic testing can help verify if a pipe is seamless.
5. Is seamless pipe stronger than welded?
Yes, seamless pipes are generally stronger than welded pipes because they lack weak points from welding seams. They can withstand higher pressure, extreme temperatures, and corrosive environments, making them ideal for critical applications such as oil & gas, power plants, and heavy industries.
