Specification
Chemical Composition
Stainless Steel 304/304L Welded Pipes Supplier
Detailed Information
We are one of the leading SS 304 Welded Pipes Suppliers and a trusted SS 304 Welded Pipe manufacturer, offering a complete range of welded austenitic grade 304 piping solutions for industrial, commercial, and structural applications. Our Stainless Steel 304 Welded Pipe products are manufactured in accordance with international standards such as ASME SA312 Grade 304 Welded Pipe, ASTM A358 Stainless Steel 304L EFW Pipe, and other equivalent specifications to ensure reliability, strength, and long service life.
With years of supply experience across oil & gas, petrochemical, food processing, pharmaceuticals, water treatment, construction, and power sectors, we understand the real-world performance requirements of grade 304 welded piping systems. Our focus is on delivering precision-manufactured, dimensionally accurate, corrosion-resistant welded pipes that meet stringent quality benchmarks.
What is Stainless Steel 304 Welded Pipe?
Stainless Steel 304 Welded Pipe is an austenitic chromium-nickel alloy pipe manufactured by rolling flat sheets or coils into cylindrical form and welding the seam using ERW, EFW, or other advanced welding processes. Grade 304 is the most widely used austenitic stainless grade due to its excellent corrosion resistance, good mechanical strength, and superior fabrication characteristics. We supply:
- SS 304 Erw Pipe
- Longitudinal welded pipes
- Electric Fusion Welded (EFW) pipes
- ASME SA312 Grade 304 Welded Pipe
- ASTM A358 Stainless Steel 304L EFW Pipe Exporter
- Stainless Steel UNS S30403 Welded Pipes
The 304L variant (UNS S30403) offers lower carbon content, making it ideal for welded structures where resistance to intergranular corrosion is critical.
Cities We Delivered
New York City, Los Angeles, Chicago, Houston, Phoenix, Philadelphia, San Antonio, San Diego, Dallas, San Jose, Austin, Jacksonville, Fort Worth, Columbus, Charlotte, San Francisco, Indianapolis, Seattle, Denver, Washington, Boston, El Paso, Nashville, Detroit, Oklahoma City, Portland, Las Vegas, Memphis, Louisville, Baltimore, Milwaukee, Albuquerque, Tucson, Fresno, Mesa, Sacramento, Atlanta, Kansas City, Colorado Springs, Omaha, Raleigh, Miami, Long Beach, Virginia Beach, Oakland, Minneapolis, Tulsa, Tampa, Arlington, New Orleans, Wichita, Bakersfield, Cleveland, Aurora, Anaheim, Honolulu, Santa Ana, Riverside, Corpus Christi, Lexington, Henderson, Stockton, Saint Paul, Cincinnati, St. Louis, Pittsburgh, Greensboro, Lincoln, Anchorage, Plano, Orlando, Irvine, Newark, Durham, Chula Vista, Toledo, Fort Wayne, St. Petersburg, Laredo, Jersey City, Chandler, Madison, Lubbock, Scottsdale, Reno, Buffalo, Gilbert, Glendale, North Las Vegas, Winston-Salem, Chesapeake, Norfolk, Fremont, Garland, Irving, Hialeah, Richmond, Boise, Spokane, Baton Rouge, Tacoma, San Bernardino, Modesto, Fontana, Des Moines, Moreno Valley, Santa Clarita, Fayetteville, Birmingham, Oxnard, Rochester, Port St. Lucie, Grand Rapids, Huntsville, Salt Lake City, Frisco, Yonkers, Amarillo, Glendale, Huntington Beach, McKinney, Montgomery, Augusta, Aurora, Akron, Little Rock, Tempe, Columbus, Overland Park, Grand Prairie, Tallahassee, Cape Coral, Mobile, Knoxville, Shreveport, Worcester, Ontario, Vancouver, Sioux Falls, Chattanooga, Brownsville, Fort Lauderdale, Providence, Newport News, Rancho Cucamonga, Santa Rosa, Peoria, Oceanside, Elk Grove, Salem, Pembroke Pines, Eugene, Garden Grove, Cary, Fort Collins, Corona, Springfield, Jackson, Alexandria, Hayward, Clarksville, Lakewood, Lancaster, Salinas, Palmdale, Hollywood, Springfield, Macon, Kansas City, Sunnyvale, Pomona, Killeen, Escondido, Pasadena, Naperville, Bellevue, Joliet, Murfreesboro, Midland, Rockford, Paterson, Savannah, Bridgeport, Torrance, McAllen, Syracuse, Surprise, Denton, Roseville, Thornton, Miramar, Pasadena, Mesquite, Olathe, Dayton, Carrollton, Waco, Orange, Fullerton, Charleston, West Valley City, Visalia, Hampton, Gainesville, Warren, Coral Springs, Cedar Rapids, Round Rock, Sterling Heights, Kent, Columbia, Santa Clara, New Haven, Stamford, Concord, Elizabeth, Athens, Thousand Oaks, Lafayette, Simi Valley, Topeka, Norman, Fargo, Wilmington, Abilene, Odessa, Columbia, Pearland, Victorville, Hartford, Vallejo, Allentown, Berkeley, Richardson, Arvada, Ann Arbor, Rochester, Cambridge, Sugar Land, Lansing, Evansville, College Station, Fairfield, Clearwater, Beaumont, Independence, Provo, West Jordan, Murrieta, Palm Bay, El Monte, Carlsbad, North Charleston, Temecula, Clovis, Springfield, Meridian, Westminster, Costa Mesa, High Point, Manchester, Pueblo, Lakeland, Pompano Beach, West Palm Beach, Antioch, Everett, Downey, Lowell, Centennial, Elgin, Richmond, Peoria, Broken Arrow, Miami Gardens, Billings, Jurupa Valley, Sandy Springs, Gresham, Lewisville, Hillsboro, Ventura, Greeley, Inglewood, Waterbury, League City, Santa Maria, Tyler, Davie, Lakewood, Daly City, Boulder, Allen, West Covina, Sparks, Wichita Falls, Green Bay, San Mateo, Norwalk, Rialto, Las Cruces, Chico, El Cajon, Burbank, South Bend, Renton, Vista, Davenport, Edinburg, Tuscaloosa, Carmel, Spokane Valley, San Angelo, Vacaville, Clinton, Bend, Woodbridge.
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Specifications of Stainless Steel 304 Welded Pipe
- Standards: ASME SA312, ASTM A358, ASTM A778
- Grade: 304 / 304L
- UNS Number: S30400 / S30403
- Size Range: 1/8″ NB to 48″ NB
- Wall Thickness: SCH 5 to SCH XXS
- Length: Single Random, Double Random, Cut Length
- End Finish: Plain End, Beveled End, Threaded
- Surface Finish: Pickled, Annealed, Polished
Our Stainless Steel UNS S30403 Welded Pipes are available in custom sizes and finishes as per project requirements.
Chemical Composition of Grade 304 / 304L
|
Element |
304 (%) |
304L (%) |
|---|---|---|
|
Carbon (C) |
0.08 max |
0.03 max |
|
Manganese (Mn) |
2.00 max |
2.00 max |
|
Silicon (Si) |
0.75 max |
0.75 max |
|
Chromium (Cr) |
18.00 – 20.00 |
18.00 – 20.00 |
|
Nickel (Ni) |
8.00 – 10.50 |
8.00 – 12.00 |
|
Phosphorus (P) |
0.045 max |
0.045 max |
|
Sulfur (S) |
0.030 max |
0.030 max |
|
Nitrogen (N) |
0.10 max |
0.10 max |
Mechanical Properties of SS 304 Welded Pipes
|
Property |
304 |
304L |
|
Tensile Strength |
515 MPa min |
485 MPa min |
|
Yield Strength |
205 MPa min |
170 MPa min |
|
Elongation |
35% min |
35% min |
|
Hardness (Brinell) |
201 HB max |
201 HB max |
These mechanical properties make our SS 304 Welded Pipe manufacturer range suitable for pressure applications, structural frameworks, and fabrication projects requiring strength combined with corrosion resistance.
Key Features of Stainless Steel 304 Welded Pipe
- Excellent resistance to atmospheric corrosion
- Good resistance to organic chemicals and oxidizing acids
- Superior weldability without need for post-weld annealing (304L)
- Smooth internal surface reduces pressure loss
- High strength-to-weight ratio
- Easy fabrication and formability
As a professional SS 304 Welded Pipe manufacturer, we ensure tight dimensional tolerance and consistent metallurgical properties.
Manufacturing Process – SS 304 ERW and EFW Pipes
As experienced SS 304 Welded Pipes Suppliers, we provide pipes manufactured through advanced production methods:
1. SS 304 ERW Pipe (Electric Resistance Welded)
-
Produced by cold-forming strip coils into cylindrical shapes.
-
Weld seam formed by resistance heating and pressure.
-
Ideal for low to medium pressure applications.
-
Uniform wall thickness and smooth finish.
2. ASTM A358 Stainless Steel 304L EFW Pipe
-
Manufactured using electric fusion welding.
-
Suitable for larger diameters and higher pressure applications.
-
Fully radiographed weld seams.
-
Used extensively in refineries and chemical processing plants.
3. ASME SA312 Grade 304 Welded Pipe
-
Designed for high-temperature and general corrosive service.
-
Commonly used in piping systems handling fluids and gases.
Each pipe undergoes hydrostatic testing, PMI testing, dimensional inspection, and visual examination to ensure quality compliance.
Applications of SS 304 Welded Pipes
Due to its versatility, Stainless Steel 304 Welded Pipe is widely used in:
- Oil & Gas transportation lines
- Chemical processing units
- Heat exchangers
- Food & beverage processing plants
- Pharmaceutical industries
- Water supply systems
- Structural and architectural frameworks
- Dairy equipment
- Power generation plants
Our experience supplying ASME SA312 Grade 304 Welded Pipe to EPC contractors enables us to understand project timelines, documentation requirements, and inspection standards.
Why Choose 304L (UNS S30403) Welded Pipes?
The low carbon content in Stainless Steel UNS S30403 Welded Pipes, SS 304 Erw Pipe minimizes carbide precipitation during welding, reducing the risk of intergranular corrosion. This makes 304L ideal for:
- Heavy gauge welded components
- High-temperature exposure
- Critical piping systems
- Fabricated pressure vessels
As a recognized ASTM A358 Stainless Steel 304L EFW Pipe Exporter, we supply radiography-tested pipes suitable for demanding refinery and petrochemical environments.
Order Stainless Steel 304 Welded Pipes Today
If you are searching for reliable SS 304 Welded Pipes Suppliers or a dependable SS 304 Welded Pipe manufacturer, we are ready to support your requirements with high-quality products and timely delivery. Our range includes:
- SS 304 Erw Pipe
- ASME SA312 Grade 304 Welded Pipe
- ASTM A358 Stainless Steel 304L EFW Pipe Exporter
- Stainless Steel UNS S30403 Welded Pipes
- Large diameter ASTM A358 Stainless Steel 304L EFW Pipe
Contact us today with your size, specification, and quantity requirements. Our team will provide technical guidance and competitive pricing tailored to your project needs.
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