Luke Steel is a well-respected manufacturer and supplier located in Houston, USA, known for its top-notch Stainless Steel 304L Buttweld Fittings that are built for reliable performance and resistance to corrosion. Crafted to meet strict ASME and ASTM standards, these fittings boast excellent weldability and a low carbon content that helps prevent carbide precipitation during welding. They come in a full range of sizes, schedules, and configurations—like elbows, tees, reducers, and caps—making them perfect for both sanitary and general-purpose piping systems. Industries such as chemical processing, food and beverage, pharmaceuticals, water treatment, and petrochemical trust Luke Steel for their consistent quality and dependable delivery.
| 304 / 304L Pipe Fittings Specifications | ASTM A403/ ASME SA403 |
|---|---|
| 304 / 304L SS Pipe Fittings size | 304 / 304L Seamless Butt Weld Fittings : 1/2″ – 10″ 304 / 304L Welded Butt Weld Fittings : 1/2″ – 48″ |
| SS 304 / 304L Pipe Fittings Dimensions | ASME/ANSI B16.9, ASME B16.28, MSS-SP-43, BS4504, BS4504, BS1560, BS10 |
| Stainless Steel 304 / 304L Buttweld Fittings Thickness | SCH10, SCH20, SCH30, STD SCH40, SCH60, XS, SCH 80, SCH 100, SCH 120, SCH 140, SCH 160, XXS available with NACE MR 01-75 |
| 304 / 304L Buttweld Pipe FittingsType | DN15-DN1200 |
| ASTM A403 304 / 304L Buttweld Fitting Connection | Welding |
| Bending Radius | R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom ASTM A403 Grade WP304 / 304L Pipe Fitting |
| Size Range | ½” NB to 24″ NB in Sch 10s, 40s, 80s, 160s, XXS. (DN6~DN100) ASTM A403 WP 304 / 304L Buttweld Fitting |
| ASTM A403 WP304 / 304L Buttweld Fittings Manufacturing process | Push, Press, Forge, Cast, etc. |
| 304 / 304L Stainless Steel Buttweld Pipe Fittings Test Certificates | EN 10204/3.1B Raw Materials Certificate 100% Radiography Test Report Third Party Inspection Report, etc |
| SA 403 WP304 / 304L Pipe Fittings Origin & Mills | Japanese, Indian, USA, Korean, European, Ukraine, Russian |
| Specialized manufacturer of | SS UNS S30400, S30403 90º Elbows, 45º Elbows, Tees, Cross, Reducer, Pipe Cap, Stub End, Pipe Bend |
| We provide Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2, Test Certificates certifying NACE MR0103, NACE MR0175 | |
Stainless Steel 304L Buttweld Fittings are low-carbon austenitic stainless steels that contain 18–20% chromium and 8–12% nickel, with a carbon content below 0.03% to enhance weldability. This alloy provides a tensile strength of about 485 MPa and a yield strength of around 170 MPa, along with excellent ductility and toughness even at cryogenic temperatures. 304L is known for its remarkable corrosion resistance in mildly corrosive environments, such as fresh water, food-grade acids, and various chemicals. Its ability to resist intergranular corrosion after welding makes it particularly suitable for critical piping applications where post-weld heat treatment isn’t feasible.
| Grade | C | Mn | Si | P | S | Cr | Ni |
| SS 304 | 0.08 max | 2 max | 0.75 max | 0.045 max | 0.030 max | 18 – 20 | 8 – 11 |
| SS 304L | 0.035 max | 2.0 max | 1.0 max | 0.045 max | 0.03 max | 18 – 20 | 8 – 13 |
| Grade | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 304 / 304L | 8.0 g/cm3 | 1400 °C (2550 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
Harry Fittings is a leading supplier of Stainless Steel 304L Buttweld Fittings in Houston, USA. We offer an extensive range of Stainless Steel 304L Buttweld Fittings, renowned for their excellent corrosion resistance and high strength, which makes them perfect for demanding industrial applications like chemical processing, marine environments, and high-temperature systems. With a commitment to quality and reliable delivery, we ensure our clients receive top-tier products tailored to meet the specific needs of various industries.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | GOST | AFNOR | EN |
| SS 304 | 1.4301 | S30400 | SUS 304 | 304S31 | 08Х18Н10 | Z7CN18‐09 | X5CrNi18-10 |
| SS 304L | 1.4306 / 1.4307 | S30403 | SUS 304L | 3304S11 | 03Х18Н11 | Z3CN18‐10 | X2CrNi18-9 / X2CrNi19-11 |
Stainless Steel 304L Buttweld Fittings from Harry Fittings offer exceptional corrosion resistance, especially in seawater and harsh environments. They are known for their high strength, durability, and resistance to pitting and crevice corrosion, ensuring long-lasting performance. We provide precise manufacturing, quality control, and reliable service for diverse industrial applications.
Stainless steel 304L Buttweld Fittings offer many advantages, including excellent corrosion resistance, reduced risk of 304L sensitivity when carbon content is low, especially in air, water and chemical environments, making it ideal for welding applications. It has excellent capacity and excellent strength, allowing it to withstand high temperatures and pressures. These fittings are durable, require minimal maintenance, are versatile in a variety of industries such as food processing, pharmaceuticals and construction in addition to providing long lasting reliability and easy cleaning, ensuring hygiene in use a in the importance of.
| NOMINAL PIPE SIZE | ALL FITTINGS | ALL FITTINGS | 180 DEG RETURN BENDS | REDUCERS | ELBOWS AND TEES | 180 DEG RETURN BENDS | CAPS |
| NPS | ID at End (1), (3), (4) | OD at Bevel (1), (2) | Centre-to- Centre O | Overall Length H | Centre -to- End Dimension A, B, C, M | Alignment of Ends U | Overall Length E |
| ½ to 2½ | 0.003 | 0.006 -0.003 | 0.025 | 0.006 | 0.006 | 0.003 | 0.012 |
| 3 to 3 ½ | 0.006 | 0.006 | 0.025 | 0.006 | 0.006 | 0.003 | 0.012 |
| 4 | 0.006 | 0.006 | 0.025 | 0.006 | 0.006 | 0.003 | 0.012 |
| 5 to 8 | 0.006 | 0.009 -0.006 | 0.025 | 0.006 | 0.006 | 0.003 | 0.025 |
| 10 to 18 | 0.012 | 0.016 -0.012 | 0.038 | 0.009 | 0.009 | 0.006 | 0.025 |
| 20 to 24 | 0.019 | 0.025 -0.019 | 0.038 | 0.009 | 0.009 | 0.006 | 0.025 |
| 26 to 30 | 0.019 | 0.025 -0.019 | … | 0.019 | 0.012 | … | 0.038 |
| 32 to 48 | 0.019 | 0.025 -0.019 | … | 0.019 | 0.019 | … |
Yes, custom sizes for Stainless Steel 304L Buttweld Fittings are available at Harry Fittings. We offer tailored solutions to meet your specific requirements, ensuring optimal performance for your projects. For more information, please contact us at sales@harryfittings.us.
Stainless Steel 304L Buttweld Fittings Due to their excellent corrosion resistance and weldability, they are widely used in pharmaceutical, food and beverage, pharmaceutical and petrochemical industries etc. These fittings are ideal for the use of liquid, pneumatic and high pressure systems. It is commonly used in architectural piping systems, HVAC systems and construction equipment. The low carbon content of the 304L reduces the risk of carbide precipitation, making it suitable for applications involving high temperatures and corrosive environments.
Get in touch with one of our Technical Sales Representatives to request a quote or get answers to any questions you may have.








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