Stainless Steel 347 and 347H Socketweld Fittings are essential components in various industrial applications, known for their exceptional corrosion resistance and high-temperature performance. These fittings are particularly popular in industries such as petrochemical, chemical, and power generation.
The main difference between Stainless Steel 347 and 347H lies in their carbon content. Stainless Steel 347H has a higher carbon content, which enhances its high-temperature strength. Both alloys, however, exhibit excellent resistance to intergranular corrosion, making them suitable for applications in aggressive environments.
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Socketweld fittings play a crucial role in connecting pipes and facilitating fluid flow in piping systems. They are designed for easy assembly and disassembly, making maintenance and repairs more straightforward. The socketweld connection involves inserting the pipe into the socket of the fitting and then applying heat to create a strong, leak-proof joint.
One of the key advantages of using Stainless Steel 347 and 347H Socketweld Fittings is their resistance to oxidation at high temperatures. This makes them ideal for applications involving elevated temperatures, such as in heat exchangers and furnace components. Additionally, these fittings offer excellent mechanical properties, ensuring durability and reliability in demanding industrial environments.
Stainless Steel 347 and 347H Socketweld Fittings are available in various types, including elbows, tees, couplings, and caps, providing versatility for different piping configurations. The fittings are manufactured in compliance with international standards and undergo rigorous testing to ensure quality and performance.
ASTM A182 / ASME SA182
ASME 16.11, MSS SP-79, 83, 95, 97, BS 3799
1/8” NB to 4” NB (Socketweld, Forged)
2000 LBS, 3000 LBS, 6000 LBS, 9000 LBS
Socketweld Fittings, Forged Fittings
EN 10204/3.1B
Raw Materials Certificate
100% Radiography Test Report
Third Party Inspection Report, etc
90º Elbows, 45º Elbows, Tees, Cross, Couplings, Reducer Inserts, Pipe Nipple, Unions
| STANDARD | UNS | WNR. | EN | JIS | GOST |
| SS 347 | S34700 | 1.4550 | X6CrNiNb18-10 | SUS 347 | 08Ch18N12B |
| SS 347H | S34709 | 1.4961 | X6CrNiNb18-12 | SUS 347H | - |
| Element | 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 |
Oil & Gas Industrires
Chemical Industries
Construction Industries
Offshore Pipelines & Pipe Works
Petrochemical Industry
Shipbuilding Industries
Hydraulic Applications
Piping Systems
Refining Industry
Food Processing Industry
Pulp & Paper Industry
Power Plant Industry
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