Non-Alloy Steel Tubes
Versatile Carbon Steel Tubes For Industrial Piping And Structural Use
Non-alloy steel tubes offer excellent durability and corrosion resistance for industrial piping, boilers, and structural applications.
Versatile Carbon Steel Tubes For Industrial Piping And Structural Use
Non-alloy steel tubes offer excellent durability and corrosion resistance for industrial piping, boilers, and structural applications.
Non-Alloy Steel Tubes are high-quality carbon steel pipes designed for a wide range of applications, offering excellent corrosion resistance and durability. Conforming to standards such as ASTM A106, ASTM A53, and EN 10255, these seamless steel tubes are engineered for industrial piping, boiler systems, and structural applications. With a composition primarily of carbon (up to 0.30%) and manganese (up to 1.20%), they provide robust mechanical properties, making them ideal for fluid transport, heat exchangers, and construction projects in industries like oil and gas, petrochemicals, and manufacturing.
Manufactured through seamless or welded processes, Non-Alloy Steel Tubes undergo heat treatments such as normalizing or annealing to optimize their microstructure for strength and toughness. Available in sizes from 1/8” to 48” (NPS), with wall thicknesses from SCH 10 to SCH 160, and lengths up to 12 meters or customized, they meet diverse project requirements. Surface treatments like galvanizing, FBE, or 3LPE coatings enhance corrosion resistance, while plain, beveled, or threaded ends ensure easy integration into industrial piping systems.
The Seamless Steel Tube is subjected to rigorous testing, including tensile, flattening, hydrostatic, and nondestructive tests, to ensure compliance with industry standards. With a minimum tensile strength of 415 MPa and yield strength of 240 MPa, these tubes offer reliable performance under high-pressure and moderate-temperature conditions (up to 427°C). Their corrosion resistance makes them suitable for handling water, steam, and non-corrosive fluids in boiler systems, while their durability supports structural applications in construction and mechanical engineering.
Compatible with standard fittings and flanges, such as those conforming to ASTM A105 or EN 10241, Non-Alloy Steel Tubes integrate seamlessly into complex industrial piping networks. Their versatility makes them a preferred choice for applications requiring cost-effective, reliable piping solutions. Compared to alloy steel pipes like ASTM A335, non-alloy tubes are more economical for general-purpose applications, offering a balance of strength, weldability, and corrosion resistance.
Engineered to address challenges like pipeline wear and corrosion in industrial systems, Non-Alloy Steel Tubes provide a cost-effective, durable solution for engineers seeking versatile boiler tubes and industrial piping. Their high-quality construction ensures safety, longevity, and efficiency in demanding applications, including water supply, steam pipelines, and structural frameworks.
Cost Reduction %
Max Service Temp °C
Tensile Strength MPa
Weldability Rating %
Non-alloy steel tubes are manufactured from steel primarily composed of iron and carbon, with little or no significant alloying elements. These tubes are widely used for general-purpose structural and mechanical applications.
The absence of expensive alloying elements makes these steel tubes highly economical, ideal for basic mechanical strength and forming applications.
Low carbon content ensures excellent weldability with minimal preheating, suitable for standard fabrication and construction needs.
| Element | Range | Function |
|---|---|---|
| Carbon (C) | 0.05 - 0.30 | Primary strengthening |
| Manganese (Mn) | 0.30 - 1.40 | Deoxidizer & strengthening |
| Phosphorus (P) | ≤ 0.045 | Controlled impurity |
| Sulfur (S) | ≤ 0.045 | Controlled impurity |
| Silicon (Si) | 0.10 - 0.35 | Deoxidizer |
| Property | Range | Units |
|---|---|---|
| Tensile Strength | 340-510 | MPa |
| Yield Strength | 235-355 | MPa |
| Elongation | 22-26 | % |
| Hardness | 120-180 | HB |
| Impact Energy | 27-40 | J (at 20°C) |
| Parameter | Range | Standard | Tolerance |
|---|---|---|---|
| Outside Diameter | 6mm - 1220mm | EN 10216-1 | ±0.5% to ±12.5% |
| Wall Thickness | 1mm - 120mm | EN 10216-1 | Grade dependent |
| Length | Up to 18m | Standard | ±25mm |
Basic grade for general pressure applications
Medium strength grade for moderate pressure service
Higher strength grade for demanding applications
Low carbon content (max 0.20%) with excellent weldability and formability
Non-Alloy Steel Tubes is widely used in industries requiring excellent high-temperature, high-pressure, and corrosion-resistant performance.
Structural framework, scaffolding systems, HVAC ducting, and infrastructure applications.
Chassis components, exhaust systems, fuel lines, and suspension components.
Machinery manufacturing, conveyor systems, hydraulic cylinders, and material handling.
Boiler applications, heat exchangers, process industries, and power generation systems.
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