Shivalik Forge And Fittings

SS 347 Buttweld Fittings

Pipe fittings are essential components used in piping systems to connect, control, or change the direction of the flow of fluids or gasses. They provide a secure and reliable joint between pipes, ensuring the smooth operation of various industrial processes. Pipe fittings come in different shapes, sizes, and materials to accommodate specific requirements and applications.

What are Buttweld Fittings?

Buttweld fittings are a type of pipe fitting that is welded to the end of pipes or tubes to create a strong and leak-free connection. They are designed to provide a smooth and continuous flow path, minimizing turbulence and pressure drop in the piping system. Buttweld fittings offer excellent structural integrity and are commonly used in high-pressure and high-temperature applications.

Buttweld fittings offer several advantages:

Strength and Durability: The butt welding technique used in buttweld fittings provides a robust and long-lasting connection. The welded joint has the same strength as the pipes themselves, ensuring the integrity and reliability of the piping system.

Leak Resistance: The seamless welded joint in buttweld fittings eliminates the potential for leaks, making them suitable for applications requiring a tight and leak-proof seal. This is especially important in industries where fluid or gas leakage can lead to safety hazards or loss of product.

Smooth Flow Characteristics: Buttweld fittings create a smooth, uninterrupted flow path within the piping system. The absence of protrusions or internal crevices minimizes pressure drop and turbulence, allowing for efficient fluid or gas transport.

Compatibility: Buttweld fittings are compatible with various pipe materials and can be used with pipes made from metals such as stainless steel, carbon steel, and alloy steel, as well as non-metallic materials like PVC and HDPE.

Applications of Buttweld Fittings

Stainless Steel 347 buttweld fittings find widespread applications across various industries, including:
Stainless Steel 347 Buttweld Fittings copy 5

Specifications of Buttweld Fittings

Specifications ASTM A403/ ASME SA403
Size 1/8 NB to 48 NB (Seamless, 100% X-Ray Welded, Fabricated)
Standards ASME/ANSI B16.9, ASME B16.28, MSS-SP-43
Thickness 5s, 10s, 40s, 80s, 20, 40, STD, 60, 80, XS, 100, 120, 140, 160, XXS with NACE Mr 01-75
Types Seamless, Welded and Fabricated

Mechanical Specification of Stainless Steel 347 Buttweld Fittings

Stainless Steel 347 is an austenitic stainless steel that offers excellent resistance to intergranular corrosion and high-temperature oxidation. The mechanical specifications of Stainless Steel 347 buttweld fittings may vary depending on the specific product and standard, but some general specifications include:


Stainless Steel 304, 1.307, UNS S30400

Tensile Strength

Minimum 515 megapascals

Yield Strength

Minimum 205 MPa


70-90 HRB (Rockwell B Hardness) or 150-180 HV (Vickers Hardness)



These specifications ensure that Stainless Steel 347 buttweld fittings possess the necessary strength and durability to withstand challenging operating conditions and environments.

How Stainless Steel 347 Benefits the Quality of Buttweld Fittings

Stainless Steel 347 offers several advantages that enhance the quality and performance of buttweld fittings:

Corrosion Resistance: Stainless Steel 347 exhibits excellent resistance to corrosion in various environments, including acidic, alkaline, and chloride-containing environments. This corrosion resistance ensures the longevity and reliability of buttweld fittings, even in aggressive industrial applications.

High-Temperature Strength: Stainless Steel 347 is designed to withstand high temperatures up to 870°C (1600°F). It retains its mechanical properties and structural integrity at elevated temperatures, making it suitable for applications in heat exchangers, furnace parts, and other high-temperature environments.

Intergranular Corrosion Resistance: Stainless Steel 347 contains niobium, which stabilizes the material and prevents sensitization and intergranular corrosion during welding or exposure to high temperatures. This enhances the durability and reliability of the buttweld fittings, especially in critical applications.

Weldability: Stainless Steel 347 offers excellent weldability, allowing for easy and reliable welding of buttweld fittings to pipes or tubes. The welding process results in strong and leak-free joints, ensuring the integrity of the piping system.

Types of Stainless Steel 347 Buttweld Fittings

Stainless Steel 347 45 Degree Elbow SS 347 45 Degree Elbow SS 347 SS 90 Degree Elbow SS 347 Stainless Steel 45 Degree Elbow SS UNS S34700 45 Degree Elbow ASME SA403 WERKSTOFF NR.1.4550 90 Degree Elbow
Stainless Steel 347 Pipe Fittings SS 347 Pipe Fittings 347 SS Buttweld Fitting 347 Stainless Steel Pipe Fitting SS UNS S34700 Buttweld Fitting SS WERKSTOFF NR.1.4550 Pipe Fittings DIN 1.4550 Stainless Steel Buttweld Fitting
Stainless Steel 347 Eccentric Reducer SS  347 Eccentric Reducer 347 SS Eccentric Reducer 347 Stainless Steel Eccentric Reducer SS UNS S34700 Eccentric Reducer ASTM A403 WP WERKSTOFF NR1.4550 Stainless Steel 347 Eccentric Reducer
Stainless Steel 347 Concentric Reducer SS 347 Concentric Reducer 347 SS Concentric Reducer 347 Stainless Steel Concentric  Reducer SS UNS S34700 Concentric Reducer ANSI B16.9 WERKSTOFF NR.1.4550 Stainless Steel Concentric Reducer
Stainless Steel 347 Lateral Tee 347 Lateral Tee 347 SS Lateral Tee 347 Stainless Steel Lateral Tee SS UNS S34700 Lateral Tee SS WP347 Lateral Tee ASME B16.28 WP 347 Stainless Steel Lateral Tee
Stainless Steel 347 Equal Tee SS 347 Equal Tee 347 SS Equal Tee 347 Stainless Steel Equal Tee ASME B16.28 WP 347 Stainless Steel Equal Tee SS WERKSTOFF NR.1.4550 Equal Tee ASTM A403 Stainless Steel Equal Tee
Stainless Steel 347 Long Stub End SS 347 Long Stub End 347 SS Long Stub End 347 Stainless Steel Long Stub End SS UNS S34700 Long Stub End SS S31009 Long Stub End ASTM A403 WP 347 Stainless Steel Long Stub End
Stainless Steel 347 Short Stub End SS 347 Short Stub End 347 SS Short Stub End 347 Stainless Steel Short Stub End SS UNS S34700 Short Stub End SS 347 Short Stub End MSS-SP-43 Stainless Steel 347 Short Stub End
Stainless Steel 347 End Cap SS 347 End Cap 347 SS End Cap SS UNS S34700 End Cap WERKSTOFF NR.1.4550 End Cap ASTM A403 347 Stainless Steel End Cap
Stainless Steel 347 Bend SS 347 Pipe Bend 347 SS Pipe Bend Stainless Steel 10d Pipe Bend 347 Stainless Steel Bend SS UNS S34700 Bend WERKSTOFF NR.1.4550 Bend ASTM A403 Stainless Steel 347 Bend
Stainless Steel 347 Equal Cross SS 347 Equal Cross 347 SS Equal Cross 347 Stainless Steel Equal Cross SS UNS S34700 Equal Cross WERKSTOFF NR.1.4550 Equal Cross ANSI B16.9 347 Stainless Steel Equal Cross

SS 347 Pipe Fittings Chemical Composition

Grade C Ni Mn P S Cr Si Mo N
347 0.08 max 9.00-13.00 2.0 max 0.045 max 0.030 max 17.00 – 20.00 1.0 max

Stainless Steel 347 Butt weld Fittings Mechanical Properties

Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
8.0 g/cm3 1454°C (2650°F) Psi – 75000 , MPa – 515 Psi – 30000 , MPa – 205 35 %

Equivalent Grades for 347 Stainless Steel Pipe Fitting

347 1.4550 s31703 SUS 347 320S31   08Ch17N13M2T   Z6 CNDT 17‐123 X6CrNiMoTi17-12-2

Types of Buttweld Fittings

shivalik offers a comprehensive range of Stainless Steel 347 buttweld fittings, including:

Buttweld Elbows: Elbows are used to change the direction of the pipeline. They are available in different angles, such as 45 degrees, 90 degrees, and 180 degrees, to accommodate specific piping configurations.

Buttweld Tees: Tees are used to create a branch connection in a pipeline. They have an inlet and two outlets, allowing for the diversion of fluid or gas flow.

Buttweld Reducers: Reducers are used to connect pipes of different diameters. They ensure a smooth transition between different pipe sizes while maintaining the flow characteristics of the system.

Buttweld Caps: Caps are used to close the ends of pipes, providing protection and preventing the entry of foreign materials. They are often used in applications where pipe ends need to be sealed temporarily or permanently.

Buttweld Stub Ends: Stub ends are used in conjunction with lap joint flanges to create a detachable joint. They allow for easy dismantling and maintenance of the piping system.

Why shivalik is the Best Manufacturer and Supplier of Buttweld Fittings

shivalik has earned a reputation as a leading manufacturer and supplier of Stainless Steel 347 buttweld fittings, providing exceptional quality and service. Here’s why they stand out:

Quality Assurance: shivalik is committed to delivering high-quality buttweld fittings that meet international standards and customer specifications. Their products undergo rigorous testing and inspection to ensure impeccable quality and performance.

Extensive Product Range: shivaliks offers a wide range of Stainless Steel 347 buttweld fittings, catering to diverse requirements. Their comprehensive inventory includes various sizes, schedules, and types of fittings, ensuring customers can find the perfect fit for their applications.

Customization Options: Recognizing the unique needs of different projects, shivaliks provides customization options for dimensions, configurations, and finishes. This enables customers to obtain tailor-made buttweld fittings that precisely meet their specifications.

Industry Expertise: With years of experience and technical expertise, shivalik has in-depth knowledge of buttweld fittings and their applications across industries. Their team of professionals offers valuable guidance and support to customers, helping them make informed decisions and select the right products.

Timely Delivery: shivalik understands the importance of timely project completion. They have efficient logistics and supply chain management systems in place to ensure prompt delivery of orders, minimizing any potential project delays.

Choose shivalik as your trusted partner for Stainless Steel 347 buttweld fittings, and experience exceptional quality, customization options, industry expertise, and reliable service for all your piping system needs.

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