As industries evolve and demand more durable and corrosion-resistant materials, Stainless Steel 304 Welded Pipes have become a preferred choice for engineering and construction projects worldwide. Known for their superior strength, resistance to rust, and ease of fabrication, SS 304 welded pipes are used in everything from food-grade processing systems to oil refineries.
We are a leading Stainless Steel 304 Welded Pipe Manufacturer in India, offering a wide range of welded pipes that meet ASTM A312 / ASME SA312 standards. Our pipes are produced using advanced technology and undergo rigorous testing to ensure top-notch performance in every industrial application.
Understanding Stainless Steel 304 Welded Pipes
Stainless Steel 304 is an austenitic stainless steel alloy containing 18% chromium and 8% nickel — often referred to as 18/8 stainless steel. It provides excellent resistance to oxidation, corrosion, and moderate chemical attacks.
A welded pipe is produced by rolling stainless steel plates or coils and welding the seams together. The weld is then polished and heat-treated to restore corrosion resistance. This process makes welded pipes more affordable while maintaining exceptional strength and uniformity.
Key Features of SS 304 Welded Pipes
- Excellent resistance to corrosion and oxidation
- Smooth internal surface ensures superior fluid flow
- High tensile and yield strength
- Easy to fabricate, bend, and weld
- Resistant to atmospheric and mild chemical conditions
- Available in various shapes and finishes
These characteristics make 304 welded pipes a versatile and reliable choice for industries across the globe.
Chemical Composition
| Element | Content (%) |
|---|---|
| Chromium (Cr) | 18.0 – 20.0 |
| Nickel (Ni) | 8.0 – 10.5 |
| Carbon (C) | ≤ 0.08 |
| Manganese (Mn) | ≤ 2.0 |
| Silicon (Si) | ≤ 1.0 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.03 |
| Iron (Fe) | Balance |
The balanced composition ensures durability and a long service life even in challenging environments.
Mechanical Properties
| Property | Value |
|---|---|
| Density | 8.0 g/cm³ |
| Tensile Strength | 515 MPa (min) |
| Yield Strength | 205 MPa (min) |
| Elongation | 40% (min) |
| Hardness (Brinell) | 201 max |
| Melting Point | 1400°C |
These mechanical values make SS 304 welded pipes suitable for high-pressure and high-temperature operations.
Manufacturing Process Followed by Leading Manufacturers
Being a trusted Stainless Steel 304 Welded Pipe Manufacturer, we follow a step-by-step manufacturing process to ensure precision and consistency:
- Raw Material Selection: Only premium SS 304 sheets and coils are used.
- Forming: The material is shaped into pipe form using advanced rolling machines.
- Welding: The edges are welded using TIG (Tungsten Inert Gas) or Laser welding techniques.
- Heat Treatment: Pipes are annealed to relieve stress and restore corrosion resistance.
- Pickling and Polishing: Surface cleaning and finishing for improved appearance and durability.
- Testing and Inspection: Every pipe undergoes hydrostatic, ultrasonic, and visual testing.
- Packaging: Pipes are packed in HDPE covers, wooden boxes, or steel bundles for damage-free delivery.
This entire process ensures that every SS 304 Welded Pipe meets the highest international standards.
Available Types of SS 304 Welded Pipes
We manufacture and export all standard and customized types, including:
- SS 304 Round Welded Pipes
- SS 304 Square Welded Pipes
- SS 304 Rectangular Welded Pipes
- SS 304 Polished Welded Pipes
- SS 304 Large Diameter Welded Pipes
- SS 304 Thin Wall Welded Pipes
Each type can be supplied in mirror, matte, or brushed finish, as per customer specification.
Stainless Steel 304 Welded Pipe Dimensions
| Outer Diameter | Wall Thickness | Length |
|---|---|---|
| 1/8” NB – 48” NB | 0.5 mm – 20 mm | Up to 6 meters or as required |
Surface finishes include 2B, BA, No.4, No.8 (Mirror), and HR.
Applications of Stainless Steel 304 Welded Pipes
Due to its hygienic and corrosion-resistant nature, SS 304 welded pipe is widely used in:
- Food & Beverage Industry: For dairy, breweries, and juice processing.
- Pharmaceuticals: Cleanroom and sterile processing lines.
- Chemical & Petrochemical Plants: Process piping and storage systems.
- Water Treatment Systems: For freshwater and wastewater pipelines.
- Construction & Architecture: Handrails, structural supports, and decorative piping.
- Oil & Gas Industry: Transmission pipelines and refinery systems.
- Automotive Industry: Exhaust and structural applications.
Its strength and finish make it suitable for both industrial and aesthetic purposes.
Standards and Specifications
Our SS 304 Welded Pipes are manufactured in accordance with the following specifications:
- ASTM A312 / ASME SA312
- ASTM A249 / A269
- EN 10217-7
- JIS G3459
- ISO 9001:2015 Certified Production
Equivalent Grades:
- UNS: S30400
- EN: 1.4301
- JIS: SUS 304
Price of Stainless Steel 304 Welded Pipe in India
The price of SS 304 Welded Pipe depends on pipe size, thickness, finish, and order quantity.
| Size (Inches) | Approx. Price (INR / Kg) |
|---|---|
| ½” to 1” | ₹210 – ₹250 |
| 1½” to 3” | ₹230 – ₹270 |
| 4” to 6” | ₹250 – ₹290 |
| 8” and above | ₹270 – ₹320 |
Note: Prices are subject to market fluctuations and raw material availability.
Quality Assurance and Testing
Every SS 304 Welded Pipe undergoes extensive testing before dispatch to ensure it meets all mechanical, dimensional, and chemical standards.
Common tests include:
- Hydrostatic Testing
- PMI (Positive Material Identification)
- Eddy Current Testing
- Intergranular Corrosion Testing
- Flaring & Flattening Tests
- Dimensional and Visual Inspections
Our commitment to quality ensures 100% defect-free products.
Our goal is to deliver quality, reliability, and precision in every pipe we manufacture.
Conclusion
As one of the most trusted Stainless Steel 304 Welded Pipe Manufacturers in India, we take pride in offering high-quality welded pipes that meet global standards. Whether you need pipes for industrial use, construction, or sanitary applications, our SS 304 welded pipes are built to perform with excellence.
With decades of experience, advanced production facilities, and a commitment to quality, we ensure our clients receive products that deliver long-term performance and value.