Njabulo Stainless is a reputable manufacturer and supplier of Stainless Steel 304H Tubing, proudly based in Cape Town, South Africa. This company has built a solid reputation for crafting top-notch austenitic stainless steel tubing that excels in high-temperature and corrosive settings. What sets Njabulo Stainless apart is their 304H Tubing, which features a higher carbon content compared to standard 304, resulting in enhanced strength and impressive creep resistance when exposed to elevated temperatures. Thanks to their cutting-edge manufacturing processes and rigorous quality control, they provide precision-engineered tubing that adheres to international standards, ensuring reliability and durability for a variety of industrial applications.
The composition of Stainless Steel 304H Tubing includes iron, chromium (18–20%), nickel (8–11%), and a higher carbon content (0.04–0.10%), along with trace amounts of manganese, silicon, and phosphorus. This increased carbon not only boosts high-temperature strength and toughness but also maintains excellent corrosion resistance. The tubing boasts a tensile strength of about 515–750 MPa and a yield strength ranging from 205–310 MPa, along with remarkable resistance to oxidation and scaling at high temperatures.
| Alloy 304H Standards | Stainless Steel 304H |
|---|---|
| ASTM A213 Stainless Steel Seamless Tube Size | 3.35 mm OD To 101.6 mm OD |
| ASTM A249 TP 304H Stainless Steel Welded Tube Size | 6.35 mm OD To 152 mm OD |
| ASTM A269 TP 304H Stainless Steel Swg & Bwg | 10 Swg., 12 Swg., 14 Swg., 16 Swg., 18 Swg., 20 Swg. |
| ASME SA213 TP 304H Stainless Steel Tube wall thickness | 0.020″ –0.220″, (special wall thicknesses available) |
| SS 304H Length | Single Random, Double Random, Standard & Cut length Tube |
| UNS S30409 Finish | Polished, AP (Annealed & Pickled), BA (Bright & Annealed), MF |
| ASTM A213 Gr. TP304H Form | ‘U’ bent or Hollow, Hydraulic, LSAW, Boiler, Straight Tube, Tube Coil, Round, Rectangular, Square Etc |
| ASTM A269 TP 304H Stainless Steel Type | Seamless, ERW, EFW, Welded, Fabricated Tube |
| ASTM A213 Stainless Steel End | Plain End, Beveled End, Treaded Tube |
| ASME SA213 SS 304H Marking | All 304h Stainless Steel Tube are marked as follows: Standard, Grade, OD, Thickness, Length, Heat No. (Or according to the customer’s request.) |
| ASME SA213TP 304H Stainless Steel Application | Oil Tube, Gas Tube, Fluid Tube, Boiler Tube, Heat exchanger Tube, |
| 304H SS Value Added Service | Draw & Expansion as per required Size & Length, Polish (Electro & Commercial) Annealed & Pickled Bending, Machining Etc. |
| Stainless Steel 304H Specialize in | Stainless Steel 304H Capillary Tube & Other Odd Size Alloy 304H Heat Exchanger & Condenser Tube |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
|---|---|---|---|---|---|---|---|---|---|---|
| 304H | min. | 0.04 | – | – | – | – | 18.0 | – | 8.0 | – |
| max. | 0.10 | 2.0 | 0.75 | 0.045 | 0.030 | 20.0 | 10.5 | – | ||
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
|---|---|---|---|---|---|
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 304H | 515 | 205 | 40 | 92 | 201 |
Contact us to get a quick quote for your requirement.
We assures that all its Stainless Steel 304H Tubing is thoroughly tested for quality and performance. Mechanical properties, corrosion resistance, and dimensional accuracy of the tubing are tested. The following certificates are also provided: Material Test Reports (MTR), 3.1 certificates, and ISO compliance, ensuring industry standards and reliability.
These tubes offer superior corrosion resistance, ideal for high-pressure applications. Sizes typically range from 1/8″ to 24″ in diameter. They provide excellent durability and are used in industries requiring precise tolerances.
Known for its excellent corrosion resistance, this tubing is available in sizes from 1/8″ to 24″. It’s cost-effective for less critical applications and offers good strength and flexibility for various uses.
These tubes excel in corrosion resistance and thermal conductivity. Common sizes range from 1/2″ to 1-1/2″ in diameter, designed for efficient heat transfer in industrial applications.
Providing high corrosion resistance, these tubes are typically available in sizes from 1/16″ to 2″. They are crucial for precise instrumentation and control systems in various industries.
These corrosion-resistant tubes come in sizes typically from 1/2″ to 5″ in diameter. They are designed to withstand high temperatures and pressures in boiler systems.
Featuring high corrosion resistance, these U-shaped tubes are available in sizes from 1/2″ to 1-1/2″. They are commonly used in heat exchangers and condensers for efficient thermal management.
Known for its superior corrosion resistance, this tubing ranges from 3/8″ to 1-1/4″ in diameter. It’s used in condensers to efficiently transfer heat and condense steam into water.
These tubes offer excellent corrosion resistance and are available in sizes typically from 1/2″ to 1-1/2″. They are used in applications requiring enhanced heat transfer efficiency due to their extended surface area.
Stainless Steel 304H Tubing finds its place in industries that operate under intense heat and pressure. It’s perfect for applications like boilers, heat exchangers, superheaters, power generation equipment, and pressure vessels. Moreover, it plays a crucial role in chemical and petrochemical plants, refinery systems, and thermal processing units where both strength and corrosion resistance are essential. Its unique blend of high-temperature durability, oxidation resistance, and mechanical reliability makes 304H tubing the go-to choice for demanding industrial and thermal service applications.
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