Tubes
Tubes
Unicorn Metal Industries supplies an extensive inventory of Industrial Tubes engineered to rigorous global specifications for critical applications. Our tubes are manufactured to ensure exceptional durability, tight dimensional precision, and superior resistance to corrosion, meeting the demands of the most challenging environments.
We specialize in Stainless Steel Tubes compliant with ASTM A213, A269, and A249. Our stock includes a wide variety of grades such as 304/L/H, 309S, 310S, 316/L/H, 317L, 321/H, 347/H, and 904L, making them ideal for heat exchangers, instrumentation, and applications requiring high thermal stability.
Our portfolio extends to premium Nickel Alloy Tubes (standards SB 161, SB 163, SB 729) in grades like Nickel 200/201, Monel 400, Alloy 20, Inconel 600/625/825, Incoloy 800/800HT, and Hastelloy C276. These are specifically designed to withstand aggressive marine and chemical processing environments.
For high-stress applications, we offer Duplex and Super Duplex Steel Tubes (ASTM A789), including grades UNS S31803, S32205, S32750, and S32760. These materials provide superior mechanical strength and exceptional resistance to pitting and stress corrosion cracking in hydraulic and process lines.
We also supply high-grade Carbon Steel Tubes conforming to ASTM A179, A192, and A210 in various grades, essential for boilers, superheaters, and heat exchangers where efficient heat transfer is critical.
Additionally, Unicorn Metal Industries stocks Alloy Steel Tubes (ASTM A213) in grades T1, T5, T9, T11, T12, T22, T23, and T91, engineered for high-pressure and high-temperature utility in refineries and power plants. Available in both seamless and welded forms, all our products are accompanied by complete documentation, including MTCs, NACE compliance, and Third-Party Inspection reports to guarantee quality.
Specification Table of Tubes
| Specification | Details |
|---|---|
| Product | Industrial Tubes (Seamless, Welded, CDW) |
| Standards (Stainless Steel) | ASTM A213 (Seamless Boiler/Heat Exchanger), ASTM A269 (General Service), ASTM A249 (Welded), ASTM A270 (Sanitary) |
| Material Grades (Stainless Steel) | TP 304, 304L, 304H, 316, 316L, 316H, 316Ti, 317L, 321, 321H, 347, 310S, 904L |
| Material Grades (Carbon Steel) | ASTM A179 (Low Carbon Heat Exchanger), ASTM A192 (High Pressure Boiler), ASTM A210 Gr. A1/C, BS 3059 |
| Material Grades (Alloy Steel) | ASTM A213 T1, T5, T9, T11, T12, T22, T23, T91, T92 |
| Material Grades (Duplex) | ASTM A789 UNS S31803, S32205 (Duplex), S32750, S32760 (Super Duplex) |
| Nickel Alloys | Nickel 200/201, Monel 400, Inconel 600/625/825, Incoloy 800/800HT, Hastelloy C276 |
| Size Range | 6.35mm OD to 254mm OD (1/4" OD to 10" OD) |
| Wall Thickness | 0.5mm to 20mm / 25 SWG to 10 SWG (Gauge thickness for tubes) |
| Length | Standard 6 Meters, Cut Lengths, U-Tubes (Up to 30 Meters for Heat Exchangers) |
| End Connections | Plain End (PE), Beveled End (BE) |
| Form | Round, Square, Rectangular, U-Shape, Pan Cake Coils, Hydraulic |
| Applications | Heat Exchangers, Boilers, Condensers, Instrumentation, Automobile, Food & Dairy, Pharmaceutical |
Seamless Tubes
Seamless Tubes are extruded from a solid billet, ensuring a uniform structure with no weld seam. This makes them capable of withstanding higher pressures and temperatures compared to welded tubes, making them ideal for critical instrumentation and heat exchanger applications.
Welded Tubes
Welded Tubes are formed by rolling strips and welding the seam, followed by sizing. They offer excellent concentricity and wall thickness consistency at a more economical price point, suitable for general engineering, structural frameworks, and decorative applications.
CDW Tubes (Cold Drawn)
Cold Drawn Welded (CDW) Tubes start as electric resistance welded tubes and are drawn through a die to achieve precise dimensions and a smooth surface finish. This process increases yield strength and is perfect for automotive parts, hydraulic cylinders, and shock absorbers.
"Precision is our promise. Unicorn Metal Industries supplies industrial tubes engineered for exact tolerances and superior surface finish, ensuring flawless performance in your most critical systems."