Home > Forged Fittings > Stainless Steel 347/347H Forged Fittings
Ranya Stainless, a trusted manufacturer and supplier based in Muscat, Oman, is committed to delivering high-quality stainless steel solutions designed for demanding industrial environments. Among its premium products, Stainless Steel 347/347H Forged Fittings stand out for their exceptional performance in high-temperature and corrosive applications. Engineered with precision and produced using advanced forging techniques, these fittings ensure superior strength, dimensional accuracy, and long-term reliability. Ranya Stainless focuses on consistent quality, on-time delivery, and customer satisfaction, making it a preferred partner for industries seeking durable and heat-resistant forged fittings capable of withstanding rigorous operating conditions.
Stainless Steel 347/347H Forged Fittings are stabilized austenitic stainless steels composed of 17–19% chromium, 9–13% nickel, and enhanced with columbium (niobium) for improved carbide stabilization. Grade 347H contains higher carbon content, offering superior high-temperature strength and creep resistance. These fittings provide excellent resistance to intergranular corrosion, oxidation, and thermal fatigue. Mechanically, they offer strong tensile and yield strength, good elongation, and stability under elevated temperatures. Their robust structure and resistance to scaling make them suitable for operations that involve heat cycling and continuous thermal exposure.
Stainless Steel Forged Fittings Specification : ASTM A182 / ASME SA182
Dimension Standard : ASME B16.11, MSS-SP-79, MSS-SP-83, MSS-SP-95, MSS-SP-97, BS3799
Size : 1/8″ NB to 4″ NB
Type : Socketweld Fittings, Screwed-Threaded Fittings (NPT or PT Type)
Rating Pressure : Threaded End – 2000 /3000/ 6000 LBS. Socket-weld End – 3000 / 6000/ 9000 LBS.
| C | Cr | Mn | Ni | P | S | Si | Cb/Ta | |
|---|---|---|---|---|---|---|---|---|
| 347 | 0.08 max | min: 17.0 max: 20.0 | 2.0 max | min: 9.0 max: 13.0 | 0.04 max | 0.30 max | 0.75 max | min:10x C max: 1.0 |
| 347H | min: 0.04 max: 0.10 | min: 17.0 max: 20.0 | 2.0 max | min: 9.0 max: 13.0 | 0.03 max | 0.30 max | 0.75 max | min:10x C max: 1.0 |
| Grade | Tensile Strength ksi (MPa) min | Yield Strength 0.2% ksi offset ksi (MPa) min | Elongation (% in 50mm) min | Hardness (Brinell) MAX | Hardness (Rockwell B) MAX |
|---|---|---|---|---|---|
| 347/347H | 75 (515) | 30 (205) | 40 | 201 | 95 |
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At Ranya Stainless, all stainless steel 347/347H forged fittings are rigorously tested to ensure unmatched quality and performance. Each product is certified to international standards, including ISO, ASTM and ASME. Comprehensive testing such as fluid stability, ultrasonic and mechanical analysis provides reliability, stability and compliance for various industrial applications.
Highly resistant to intergranular corrosion, these fittings are designed for high-pressure applications. They provide a secure, leak-proof connection in sizes from 1/4″ to 4″ and various pressure ratings.
Offering exceptional resistance to oxidation and high-temperature environments, these fittings are available in sizes from 1/8″ to 4″ NPT. They are ideal for applications where high strength and durability are required.
Resistant to both corrosion and high temperatures, this elbow allows for smooth changes in pipe direction at a 45-degree angle. Sizes range from 1/2″ to 4″, accommodating various pipe dimensions.
With excellent resistance to corrosion and high temperatures, this tee connects three sections of pipe, allowing for changes in direction. Available in sizes from 1/4″ to 4″ NPT.
Featuring strong corrosion resistance and suitability for high-temperature use, this coupling connects a pipe to a threaded fitting. Common sizes include 1/4″ to 2″ NPT.
Known for its durability and resistance to corrosive environments, this cross-fitting enables four-way connections between pipes. Available in sizes from 1/2″ to 2″, it ensures robust and reliable performance.
Stainless Steel 347/347H Forged Fittings are widely used in industries that require exceptional heat resistance, corrosion protection, and mechanical stability. They are ideal for high-temperature piping systems, heat exchangers, boilers, and superheater tubes in power generation and thermal processing plants. The chemical, petrochemical, and refinery sectors rely on them for fittings exposed to aggressive media and fluctuating temperatures. They are also used in aerospace, pharmaceutical manufacturing, food processing, and equipment exposed to repeated heating and cooling cycles. Their ability to maintain strength and resist carbide precipitation makes them a dependable choice for critical and long-lasting applications.
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