Khuliso Fittings stands out as a top-notch manufacturer and supplier located in Cape Town, South Africa, specializing in high-quality Stainless Steel 304H Buttweld Fittings. These fittings are crafted for high-temperature and high-pressure scenarios, offering exceptional strength, durability, and resistance to corrosion. The Stainless Steel 304H, a high-carbon variant of the standard 304, boasts improved tensile and creep strength, making it perfect for demanding industrial settings. Khuliso Fittings is committed to delivering precision-engineered products that adhere to international standards, catering to sectors like petrochemical, power generation, oil and gas, and chemical processing with dependable and long-lasting piping solutions.
Specifications : ASTM A403 / ASME SA403
Dimensions : ASME/ANSI B16.9, ASME B16.28, MSS-SP-43, BS4504, BS4504, BS1560, BS10 ASME 16.11, MSS SP-79, 83, 95, 97, BS 3799
Size : Seamless Butt Weld Fittings : 1/2″ – 10″ | Welded Butt Weld Fittings : 1/2″ – 48″
Schedule : SCH10, SCH20, SCH30, STD SCH40, SCH60, XS, SCH 80, SCH 100, SCH 120, SCH 140, SCH 160, XXS available with NACE MR 01-75
Bending Radius : R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom
Type : Seamless / ERW / Welded / Fabricated
Thickness :20 Swg., 18 Swg., 16 Swg., 14 Swg., 12 Swg., 10 Swg., & Sch. 10, Sch. 40, Sch. 80 etc.
The composition of Stainless Steel 304H Buttweld Fittings includes around 18–20% chromium, 8–11% nickel, and a higher carbon content ranging from 0.04–0.10%. This blend enhances mechanical strength, provides excellent oxidation resistance, and ensures stability at elevated temperatures. These fittings showcase a tensile strength of approximately 515 MPa, a yield strength of 205 MPa, and an elongation of 40%. They also excel in weldability, toughness, and scaling resistance, making them ideal for continuous high-temperature service and challenging operational conditions.
| C | Mn | Si | P | S | Cr | Ni | N | |
|---|---|---|---|---|---|---|---|---|
| 304 | 0.07max | 2.0max | 0.75max | 0.045max | 0.03max | min: 18.0 max: 20.0 | min: 8.0 max: 10.5 | — |
| 304L | 0.03max | 2.0max | 0.75max | 0.045max | 0.03max | min: 18.0 max: 20.0 | min: 8.0 max: 12.0 | 0.10 max |
| 304H | min: 18.0 max:20.0 | min: 8.0 max: 10.5 | min: 0.04 max:0.10 | 0.75 max | 2.0 max | 0.045 max | 0.03 max | 0.10 max |
| Grade | Tensile Strength ksi (min) | Yield Strength 0.2% ksi (min) | Elongation % | Hardness (Brinell) MAX | Hardness (Rockwell B) MAX |
|---|---|---|---|---|---|
| 304 | 75 | 30 | 40 | 201 | 92 |
| 304L | 70 | 25 | 40 | 201 | 92 |
| 304H | 75 | 30 | 40 | 201 | 92 |
Khuliso Fittings is a leading supplier of Stainless Steel 304H Buttweld Fittings in Cape Town, South Africa. We offer an extensive range of Stainless Steel 304H 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 | UNS | WNR. | AFNOR | EN | JIS | BS | GOST |
|---|---|---|---|---|---|---|---|
| SS 304 | S30400 | 1.4301 | Z7CN18‐09 | X5CrNi18-10 | SUS 304 | 304S31 | 08Х18Н10 |
| SS 304L | S30403 | 1.4306/1.4307 | Z3CN18‐10 | X2CrNi18-9 / X2CrNi19-11 | SUS 304L | 304S11 | 03Х18Н11 |
| SS 304H | S30409 | 1.4301 | – | – | – | – | – |
Stainless Steel 304H Buttweld Fittings from Khuliso 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 304H Buttweld Fittings offer excellent mechanical properties, high thermal strength and corrosion resistance, making them ideal for critical operating conditions They maintain structural integrity at high temperatures, ensuring long life and performance in heat exchanger, power plant and chemical processing applications Their high carbon content resists creep increases, thereby reducing the risk of deformation over time. These components are easily welded, providing a secure, watertight connection. Additionally, 304H’s versatility and scaling resistance make it suitable for a wide range of applications, from petrochemical to food processing.
| SS 304/304L | ||||||
|---|---|---|---|---|---|---|
| Density lbm/in3 | Thermal Conductivity (BTU/h ft. °F) | Electrical Resistivity (in x 10-6) | Modulus of Elasticity (psi x 106 | Coefficient of Thermal Expansion (in/in)/ °F x 10-6 | Specific Heat (BTU/lb/ °F) | Melting Range (°F) |
| at 68°F: 0.285 | 9.4 at 212°F | 28.3 at 68°F | 28 | 9.4 at 32 – 212°F | 0.1200 at 68°F to 212°F | 2500 to 2590 |
| 12.4 at 932 °F | 39.4 at 752°F | 10.2 at 32 – 1000°F | ||||
| 49.6 at 1652 °F | 10.4 at 32 – 1500°F | |||||
| SS 304H | ||||||
| Denstiy lbm/in3 | Coefficient of Thermal Expansion (min/in)-°F | Thermal Conductivity BTU/hr-ft-°F | Specific Heat BTU/lbm -°F | Modules of Elasticity (annealed)2-psi | ||
| at 68 °F | at 68 – 212°F | at 68 – 1600°F | at 212°F | at 932°F | at 32 – 212°F | in tension (E) |
| 0.285 | 9.2 | 11.0 | 9.4 | 12.4 | 0.12 | 29 x 106 |
Yes, custom sizes for Stainless Steel 304H Buttweld Fittings are available at Khuliso Fittings. We offer tailored solutions to meet your specific requirements, ensuring optimal performance for your projects. For more information, please contact us at sales@khulisofittings.co.za.
You’ll find Stainless Steel 304H Buttweld Fittings commonly used in applications that demand high strength, durability, and resistance to high-temperature oxidation. They are frequently found in boilers, superheaters, heat exchangers, pressure vessels, and chemical processing equipment. Additionally, they play a crucial role in power plants, refineries, and thermal processing units that undergo extreme thermal cycling. The combination of high-temperature strength, corrosion resistance, and long-term reliability makes these fittings a perfect choice for critical piping systems in industrial 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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