Stainless Steel Welded Pipes & Tubes Manufacturer & Supplier
Amardeep Steel Centre is also a manufacturer, supplier and exporter of superior quality stainless steel welded pipes and tubes. Our pipes are made by bending the stainless steel plates or coils into a circular form and then joining the edges together using highly skilled methods of welding so that they are strong, durable and not uneven.
Our plant has a dedicated facility for manufacturing of austenitic, super austenitic, Duplex, and super duplex stainless steel welded pipes in coils and plates. We apply the latest technology of welding, like TIG, SAW, and K-TIG, to provide accuracy and high quality of welding depending on the pipe size and wall thickness.
Our welded pipes, which are engineered to resist corrosion, have smooth finishes, and are reliable, can be found in a variety of sizes and grades, such as 304, 304L, 316 and 316L, amongst others. The pipes go through a process of rigorous solution annealing, pickling, and straightening and are put through a procedure of strict quality testing to attain international standards of ASME, ASTM and EN.
We manufacture stainless steel welded pipes that find application in oil and gas industries, petrochemical industries, water treatment industries, food processing industries, and energy industries are known to be durable and high performance.
What Are Stainless Steel Welded Pipes & Tubes?
Stainless Steel Welded Pipes & Tubes are tubular products crafted from high-quality stainless steel flat-rolled strips or plates. This material is meticulously formed into a round, square, rectangular, or other desired profile and then longitudinally joined along the seam using advanced welding techniques. The inherent properties of stainless steel, primarily its exceptional corrosion resistance due to a minimum 10.5% chromium content, combined with modern manufacturing processes, make these Welded Stainless Steel Pipes and Welded Stainless Steel Tubes a versatile and reliable choice.
Key welding processes employed include ERW (Electric Resistance Welding), known for its efficiency and consistency; EFW (Electric Fusion Welding), often used for larger diameter pipes; TIG (Tungsten Inert Gas) welding, favored for high-purity applications and superior weld aesthetics; and Laser welding, which provides precise, narrow welds ideal for thin-walled tubing. These techniques ensure strong, durable weld seams with properties that often approach those of the base material. While seamless tubes are preferred for extremely high-pressure applications, Welded stainless steel tubing offers excellent dimensional accuracy, superior surface finishes, and often a more cost-effective solution for a vast array of uses. Common industry standards governing these products include ASTM A312 (for Welded Stainless Steel Pipes), ASTM A249, ASTM A269 (for general service Welded Stainless Steel Tubes), and ASTM A270 (for sanitary applications).
Stainless Steel Welded Pipes & Tubes Specifications
Amardeep Steel provides Stainless Steel Welded Pipes & Tubes that conform to a wide range of international specifications to meet diverse project requirements:
| Standard Examples |
|
|---|---|
| Common Grades | 304, 304L, 316, 316L, 316Ti, 321, 347, Duplex Grades (e.g., 2205, S31803), Ferritic Grades (e.g., 409, 430, 439) |
| Product Description | High-quality SS Welded Pipes and Tubes designed for corrosion resistance, structural integrity, hygienic use, high-temperature service, or visual appeal depending on the grade and finish. |
| Manufacturing Process | ERW stainless steel pipes and tubes, TIG welded, Laser welded, and EFW for large diameters. |
| Heat Treatment (Post-Weld) | Typically annealed (1040–1150°C) for stress relief and corrosion resistance. Bright annealing is available for aesthetic/surface cleanliness. |
| Outside Diameter (OD) |
|
| Wall Thickness (WT) |
|
Chemical Composition & Mechanical Properties of Stainless Steel Welded Pipes & Tubes
The following provides typical property ranges for commonly used austenitic Stainless Steel Welded Pipes & Tubes. Specific values are 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 |
| Molybdenum (Mo) | -- | 2.00 – 3.00 |
| Manganese (Mn) | 2.00 max | 2.00 max |
| Silicon (Si) | 0.75 max | 0.75 max |
Typical Mechanical Properties Stainless Steels Welded Pipes
Stainless steel Welded Pipes like 304L and 316L offer a balanced combination of strength, ductility, and hardness, making them ideal for applications requiring corrosion resistance and formability.
| 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 Welded SS Pipe & Tubes
Amardeep Steel ensures precise dimensional control for all its Welded Stainless Steel Pipes and Welded Stainless Steel Tubes:
| Parameter | Description |
|---|---|
| OD & WT Ranges | As detailed in the specifications section, catering to a broad spectrum of industrial and commercial needs. |
| Tolerances | Strictly adhering to relevant ASTM standards (e.g., A554 for ornamental/mechanical tubing, A999/A999M for general requirements applicable to A312 pipe). |
| Lengths | Standard lengths include 6 meters (approx. 20 ft), with options for custom cut-to-length services to minimize waste and facilitate easier installation. |
Types & Forms of Stainless Steel Welded Pipes & Tubes
Our Stainless Steel Welded Pipes & Tubes are available in various types and forms to suit specific manufacturing methods and end-use requirements:
By Welding Process:
- Stainless Steel ERW Pipes / Tubes: Cost-effective, widely used for general applications.
- TIG Welded Stainless Steel Tubes: (Gas Tungsten Arc Welding) Produces clean, high-quality welds; ideal for sanitary and precision use.
- Laser Welded Stainless Steel Tubes: Narrow weld seams, minimal heat effect; great for thin-walled, precise applications.
- EFW Stainless Steel Pipes: Suitable for large-diameter pipes made from stainless steel plates.
By Shape:
- Round: The most common form for both SS welded pipes and tubes, used for fluid conveyance and structural purposes.
- Square: Widely used for structural, architectural, and ornamental applications.
- Rectangular: Common in framing, supports, and decorative elements.
- Oval & Custom Profiles: Available for specialized design requirements.
By Finish:
- Mill Finish: As-welded or as-annealed condition, basic industrial finish.
- Pickled (Annealed & Pickled - AP): Clean matte surface, good corrosion resistance.
- Bright Annealed (BA): Smooth, reflective surface for hygienic/decorative use.
- Polished: Grit finishes like #4 Satin, #180, #240, #8 Mirror for decorative or sanitary use.
- Brushed: A distinctive directional textured finish.
By Ends:
- Plain Ends (PE): Standard clean-cut ends.
- Bevelled Ends (BE): Prepared for butt-welding, common for welded SS pipe used in piping systems.
Applications & Industries Served by Stainless Steel Welded Pipes & Tubes
The versatility, corrosion resistance, and aesthetic appeal of Welded stainless steel tubing and pipes make them suitable for a vast array of applications across numerous industries:
- Architectural & Ornamental: Handrails, balustrades, decorative facades, furniture frames, public art installations (often using polished square or round tubes).
- Food & Beverage Processing: Hygienic piping systems, dairy tubing, brewery and winery lines, food conveyor components (typically sanitary SS Welded Tubes conforming to ASTM A270).
- Pharmaceutical & Biotechnology: High-purity process lines, utility piping, cleanroom equipment.
- Automotive: Exhaust systems (mufflers, tailpipes), fuel lines, structural components requiring corrosion resistance.
- Chemical & Petrochemical: Process piping for moderately corrosive environments, utility lines, sample lines, tank construction.
- Water Treatment & Distribution: Piping for potable water systems, wastewater treatment plants, desalination facilities.
- Heat Exchangers & Condensers: Utilized where welded construction meets the necessary thermal and mechanical performance criteria (e.g., ASTM A249 for heat exchanger tubes).
- Structural Applications: Support frames, platforms, and structural members in corrosive environments or where aesthetics are important.
- General Industrial Fabrication: Machinery components, conveying systems, ductwork, and various fabricated parts. The ease of SS pipe fabrication makes it a popular choice.
Why Choose Amardeep Steel for Your Stainless Steel Welded Pipes & Tubes?
When you select Amardeep Steel as your supplier for Stainless Steel Welded Pipes & Tubes, you are choosing a partner dedicated to quality, reliability, and customer satisfaction:
- Manufacturing Excellence & Versatility: Our advanced manufacturing facilities produce high-quality Stainless Steel Welded Pipes & Tubes utilizing processes like ERW (Electric Resistance Welding), TIG, and Laser welding. This ensures consistent weld integrity, excellent dimensional accuracy, and superior surface finish across our product range. (If primarily a supplier, focus on sourcing from top-tier mills with these capabilities.)
- Global Exporter with Proven Track Record: Amardeep Steel is a trusted manufacturer and exporter of SS Welded Pipes and SS Welded Tubes. We proudly serve a diverse international clientele, regularly supplying our products to customers in the USA, Canada, UAE, Saudi Arabia, Europe, Southeast Asia, and other key global markets.
- Extensive Stock & Fast Turnaround: We maintain a substantial inventory of Welded Stainless Steel Pipes and Welded Stainless Steel Tubes in popular grades such as 304L and 316L, and in various sizes. This ensures they are ready for immediate shipment to meet your project timelines. Efficient custom cut-to-length and finishing services are also available.
- Certified Quality & Assurance: Our unwavering commitment to quality is underscored by our ISO 9001 certification. All Stainless Steel ERW Pipes and other welded products are supplied with EN 10204 3.1/3.2 Mill Test Certificates (MTC), providing full traceability and verification of properties. We readily accommodate third‐party inspections from renowned agencies.
- Expert Technical Support: Our dedicated team of experienced metallurgists and engineers is available 24/7 to provide comprehensive technical support. We offer expert guidance on grade selection, Stainless steel pipe welding considerations, SS pipe fabrication techniques, and application challenges related to your Stainless Steel Welded Pipes & Tubes requirements.
Stainless Steel Grades We Offer
Here are some of our most in-demand stainless steel welded pipe and tube grades based on customer interest and usage:
| Grade | Full Name | Key Features | Common Uses |
|---|---|---|---|
| 304 / 304L | ASTM A312 TP304 / TP304L | Excellent corrosion resistance, easy to weld and form | Kitchen equipment, tanks, pipelines |
| 316 / 316L | ASTM A312 TP316 / TP316L | Superior resistance to chlorides and acids | Marine, chemical processing, pharmaceuticals |
| 316H | ASTM A312 TP316H | High carbon version for high-temperature strength | Boilers, pressure vessels, heat exchangers |
| 310 / 310S | ASTM A312 TP310 / TP310S | High-temperature and oxidation resistance | Furnaces, heat treatment, power plants |
| 321 / 321H | ASTM A312 TP321 / TP321H | Stabilized with titanium, resists intergranular corrosion | Aerospace, exhaust systems |
| 410 | ASTM A312 TP410 | Martensitic grade, good wear resistance, magnetic | Automotive, cutlery, industrial tools |
| 317 / 317L | ASTM A312 TP317 / TP317L | High molybdenum content for better pitting resistance | Pulp and paper, chemical plants |
| 310H / 310S | ASTM A312 TP310H / TP310S | Heat-resistant versions with excellent strength | Oil refining, power stations |
| JIS Grades (e.g. 3459, 3468) | JIS G3459, G3468 | Japanese standards, high strength and durability | Global pipeline projects, custom industrial applications |
Get Your Stainless Steel Welded Pipes price
For the latest price, detailed specifications, or to discuss your specific project requirements for Stainless Steel Welded Pipes & Tubes, please contact the expert team at Amardeep Steel today. We are ready to provide you with high-quality Welded SS pipe and tube solutions, competitive quotations, and exceptional service for all your Stainless Steel Welded Pipes & Tubes needs.
Frequently Asked Questions: Stainless Steel Welded Pipes & Tubes
1. How are welded stainless steel pipes and tubes manufactured?
The process begins with a flat, high-quality stainless steel coil. This coil is progressively shaped into a tube by rollers, and the longitudinal seam is fused using advanced welding techniques like TIG (for high-integrity welds) or ERW (for efficiency).
After welding, the tube is typically heat-treated (annealed) to relieve stress and restore full corrosion resistance to the weld zone. Finally, rigorous testing is performed to guarantee weld integrity and overall product quality.
2. Which stainless steel grades are most common, and how do I choose?
Grade 304/304L: The workhorse of the stainless steel family. It offers excellent corrosion resistance in a wide range of atmospheric and chemical environments. The "L" grade (304L) has lower carbon content, which minimizes carbide precipitation during welding, making it ideal for welded products.
Grade 316/316L: Contains molybdenum, which significantly enhances its resistance to chlorides (like saltwater) and other harsh industrial chemicals. It is the preferred choice for marine, pharmaceutical, and food processing applications where superior corrosion resistance is non-negotiable.
3. What industry standards do your welded pipes and tubes conform to?
Our products are manufactured and certified to meet or exceed key international standards, ensuring safety, reliability, and interoperability. Common standards include:
- ASTM A249: For welded austenitic steel boiler, superheater, heat-exchanger, and condenser tubes.
- ASTM A269: For seamless and welded austenitic stainless steel tubing for general service.
- ASTM A312: For seamless, straight-seam welded, and cold-worked welded austenitic stainless steel pipe for high-temperature and general corrosive service.
- ASME SA249: The boiler and pressure vessel code equivalent of ASTM A249.
4. Can you provide custom lengths or special fabrications?
Absolutely. We understand that standard sizes don't fit every project. We offer cut-to-length services to minimize waste at your site and can work with you to provide custom fabrication services such as bending, polishing, and end-finishing. Please contact our sales team with your specific requirements.
5. What are stainless steel welded pipes sizes?
Stainless steel welded pipes are available in a wide range of sizes to suit various applications. Common outer diameters (OD) range from 6 mm to 610 mm (1/4" to 24"), while wall thicknesses typically vary from 0.5 mm to 25 mm. Lengths can be custom-cut or supplied in standard lengths of 6m or 12m. Sizes may also conform to standards like ASME, ASTM, or EN depending on industry requirements.
