Stainless Steel 304 Welded Pipe is one of the most widely used and versatile piping products in the stainless steel family. Known for its excellent corrosion resistance, good strength, and easy fabrication, SS 304 Welded Pipes are ideal for industries such as chemical, food processing, oil & gas, and construction.
As a leading Stainless Steel 304 Welded Pipe Manufacturer, we provide pipes that meet international standards for quality, durability, and performance. Every welded pipe we manufacture is designed to offer long-term reliability in corrosive and high-temperature environments.
What is a Stainless Steel 304 Welded Pipe?
A Stainless Steel 304 Welded Pipe is made by rolling stainless steel plates or strips and welding the seam longitudinally. After welding, the pipes are heat-treated and polished to enhance their strength and appearance. These pipes are typically more cost-effective compared to seamless pipes and are available in various diameters and wall thicknesses.
The 304 grade, an austenitic stainless steel alloy, contains 18% chromium and 8% nickel, which gives it outstanding corrosion and oxidation resistance.
Chemical Composition of Stainless Steel 304 Welded Pipe
| Element | Percentage (%) |
|---|---|
| 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 |
This chemical composition provides the perfect balance between strength, ductility, and corrosion resistance.
Mechanical Properties
| Property | Value |
|---|---|
| Density | 8.0 g/cm³ |
| Tensile Strength | 515 MPa min |
| Yield Strength | 205 MPa min |
| Elongation | 40% min |
| Melting Point | 1400°C |
| Hardness (Brinell) | ≤ 201 HB |
These properties make SS 304 Welded Pipes suitable for a variety of high-pressure and structural applications.
Manufacturing Process of SS 304 Welded Pipes
As a reputed Stainless Steel 304 Welded Pipe Manufacturer, we follow a precise and controlled production process to ensure the highest quality standards:
- Raw Material Selection: Premium-grade SS 304 sheets or coils are sourced.
- Forming: Sheets are rolled into cylindrical shapes.
- Welding: Longitudinal or spiral welding is performed using TIG or plasma arc welding.
- Heat Treatment: Pipes are annealed to relieve internal stresses and restore corrosion resistance.
- Pickling & Polishing: Oxides and impurities are removed, followed by surface finishing.
- Testing & Inspection: Each pipe undergoes hydro testing, ultrasonic testing, and dimensional inspection.
- Final Packaging: Pipes are packed in HDPE, wooden crates, or steel bundles for safe transit.
Available Types of Stainless Steel 304 Welded Pipes
We manufacture and supply a wide range of welded pipes in various shapes and finishes to meet diverse industrial needs:
- Round Welded Pipes
- Square Welded Pipes
- Rectangular Welded Pipes
- Polished Welded Pipes
- Thin Wall Welded Pipes
- Large Diameter Welded Pipes
All pipes are available in customized sizes, wall thicknesses, and lengths as per client requirements.
Specifications and Standards
Stainless Steel 304 Welded Pipes are manufactured in compliance with the following standards:
- ASTM A312 / ASME SA312
- ASTM A249 / A269 (for heat exchanger tubes)
- DIN EN 10217-7
- JIS G3459
- ISO / EN Standards
Equivalent Grades:
- UNS: S30400
- EN: 1.4301
- JIS: SUS 304
Dimensions and Size Range
| Type | Size Range |
|---|---|
| Outer Diameter | 1/8” NB to 48” NB |
| Wall Thickness | 0.5 mm to 20 mm |
| Length | Up to 6 meters or custom length |
| Form | Round, Square, Rectangular |
Surface finishes include 2B, BA, No.4, Matte, and Mirror Polished as per requirement.
Applications of Stainless Steel 304 Welded Pipes
Stainless Steel 304 Welded Pipes are used extensively in environments requiring corrosion resistance, strength, and hygiene.
Common applications include:
- Food and beverage processing
- Chemical and petrochemical industries
- Water and wastewater treatment
- Heat exchangers and condensers
- Architectural and structural designs
- Oil & gas pipelines
- Pharmaceutical equipment
Because of its hygienic properties and resistance to oxidation, SS 304 welded pipe is also preferred in dairy and brewery industries.
Advantages of Stainless Steel 304 Welded Pipe
- Excellent corrosion and oxidation resistance
- High strength and durability
- Cost-effective alternative to seamless pipes
- Smooth internal surface ensures better flow
- Easy to fabricate, weld, and maintain
- Aesthetic appearance suitable for architectural applications
Price of Stainless Steel 304 Welded Pipe in India
The price of SS 304 Welded Pipe varies depending on size, wall thickness, finish, and order quantity.
| Size (Inch) | Approx. Price (INR / Kg) |
|---|---|
| ½” – 1” | ₹220 – ₹260 |
| 1½” – 3” | ₹240 – ₹280 |
| 4” – 8” | ₹260 – ₹300 |
| 10” – 24” | ₹280 – ₹320 |
Note: Prices are approximate and subject to change based on raw material costs and market conditions.
Quality Assurance and Testing
Being a trusted Stainless Steel 304 Welded Pipe Manufacturer, we follow strict quality control procedures. Each pipe is tested as per international standards:
- Hydrostatic Testing
- Ultrasonic and Eddy Current Testing
- PMI (Positive Material Identification)
- Intergranular Corrosion Testing
- Flattening and Flaring Tests
- Visual & Dimensional Inspection
Only pipes that pass all tests are approved for shipment.
Why Choose Us as Your Stainless Steel 304 Welded Pipe Manufacturer
- 58+ Years of Industry Experience
- ISO Certified Company
- Based in Ahmedabad, Gujarat
- 100% Quality Assured Products
- On-Time Delivery Across India and Overseas
- Custom Sizes and Finishes Available
Our manufacturing facilities are equipped with advanced machinery and skilled professionals to deliver precision-engineered welded pipes that meet international standards.
Conclusion
Stainless Steel 304 Welded Pipes are the preferred choice for industries requiring corrosion-resistant, durable, and cost-effective piping solutions. As a leading Stainless Steel 304 Welded Pipe Manufacturer in India, we provide premium-grade pipes suitable for diverse applications in chemical, food, oil & gas, and marine industries. Our commitment to quality, precision, and timely delivery makes us one of the most trusted manufacturers in the stainless steel market.
