Walid Stainless, headquartered in Tunis, Tunisia, is a trusted manufacturer and supplier of high-quality stainless steel tubing for demanding industrial and high-temperature applications. Their Stainless Steel 347H Tubing is designed for elevated-temperature service, providing excellent resistance to intergranular corrosion and thermal stress. Stabilized with niobium and featuring higher carbon content, it delivers superior creep strength and long-term durability. Manufactured under strict quality controls and precision processes, Walid Stainless ensures consistent dimensions, smooth finishes, and reliable mechanical performance. Customers rely on Stainless Steel 347H Tubing for secure, long-lasting performance in critical industrial systems.
Stainless Steel 347H Tubing is an austenitic stainless steel alloy containing approximately 17–19% chromium, 9–13% nickel, and higher carbon content, stabilized with niobium. Niobium binds carbon to prevent carbide precipitation, enhancing resistance to intergranular corrosion and maintaining weld integrity. The tubing typically exhibits tensile strength between 515–700 MPa and hardness around 170–200 HB. Its austenitic structure ensures excellent toughness, creep resistance, and dimensional stability under continuous high-temperature service.
| Specifications | ASTM A/ASME SA213/A249/A269/A312/A358 |
| Dimensions | ASTM, ASME, and API |
| Size | 1/8″NB TO 30″NB IN |
| 304 Pipes & Tubes Size | 1/2″ NB – 16″ NB |
| ERW 304 Pipes & Tubes | 1/2″ NB – 24″ NB |
| EFW 304 Pipes & Tubes | 6″ NB – 100″ NB |
| Thickness | 0.3mm – 50 mm |
| Specialized in | Large Diameter Size |
| Schedule | SCH5, SCH10, SCH20, SCH30, SCH40, STD, SCH80, SCH 80S, SCH60, SCH80, SCH120, SCH140, SCH160, SCH XXS, SCH XS |
| Type | Seamless / ERW / Welded / Fabricated / LSAW Pipes |
| Form | Round, Square, Rectangular, Hydraulic, Oval, U Shape, Pan Cake Coils, Coiled Etc |
| Length | Single Random, Double Random & Required Length. |
| End | Plain End, Beveled End, Treaded |
| Stainless Steel | Nickel | Magnesium | Silicon | sulfur | Carbon | Chromium | Phosphorus | Molybdenum | Nitrogen | |
| 347H | Minimum | 9 | 00.04 | 17 | 3 | |||||
| Maximum | 13 | 2 | 1 | 00.030 | 00.10 | 19 | 00.045 | 4 | ||
| SS Grade | Tensile Strength | Yield Strength | Elongation | Hardness | |
| Rockwell B | Brinell | ||||
| SS 347H | 515 | 205 | 40 | 92 | 201 |
Contact us to get a quick quote for your requirement.
We offers highest quality in its Stainless Steel 347H Tubing with severe testing and certification. Each product is thoroughly checked for dimensional measurements, mechanical tests, and corrosion resistance. Full certification including MTCs will be provided by us for your assurance that all the international standards and requirements are met.
This tubing comes in various sizes, typically ranging from 1/8″ to 12″ in diameter. It offers high resistance to oxidation and corrosion, particularly in high-temperature environments. Ideal for applications requiring robust strength and durability.
Available in diameters from 1/2″ to 12″, this tubing is welded and offers similar high-temperature strength as seamless options. It is highly resistant to intergranular corrosion and is used in environments exposed to sulfuric and nitric acids.
These tubes are generally available in sizes from 1/4″ to 2″ OD. They are specifically designed for high-efficiency heat transfer and offer excellent resistance to oxidation and sulfidation. Suitable for use in high-temperature heat exchangers.
Instrumentation tubing sizes typically range from 1/16″ to 1″. It is designed for precise and reliable measurements in harsh environments, providing excellent resistance to corrosion and high temperatures.
Available in diameters from 1/2″ to 5″, these tubes are designed to withstand high pressures and temperatures in boilers. They offer strong resistance to oxidation and carburization, making them ideal for high-temperature steam applications.
These tubes are usually sized from 1/2″ to 3″ in diameter and are formed into a U-shape for use in heat exchangers and other applications. They provide high resistance to corrosion and high-temperature deformation.
Condenser tubes come in sizes from 1/2″ to 3″ OD. They are designed for efficient heat transfer and resist corrosion from various coolants and environmental conditions, ensuring longevity in condenser systems.
Stainless Steel 347H Tubing is widely used in high-temperature, high-pressure industrial environments. Common applications include boilers, heat exchangers, petrochemical processing units, power generation equipment, and furnace components. Its superior resistance to thermal stress, oxidation, and intergranular corrosion makes it ideal for welded assemblies and long-term elevated-temperature service. Engineers and maintenance teams rely on 347H Tubing for durability, safety, and dependable performance. Walid Stainless ensures each tube meets stringent quality standards, providing reliable operation in demanding industrial, chemical, and power-generation applications.
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