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Reduced Wall Longitudinal Welded Tube
Reduced Wall Longitudinal Welded Tube refers to a specialized category of steel pipe manufactured with a precisely controlled, thinner-than-standard wall thickness along its length, utilizing a straight seam welding process. This production method is ideal for applications demanding a high strength-to-weight ratio, excellent pressure-bearing capabilities, and cost-effective material usage. Often synonymous with terms like Light Wall Longitudinal Welded Steel Tube or Slim Wall Straight Seam Welded Pipe, this product is engineered for efficiency. Its design makes it a preferred choice over thicker-walled alternatives in scenarios where reducing structural load and material cost is paramount without compromising on performance. For projects requiring the utmost precision in wall dimensions, a Low Thickness Longitudinal Welded Tube offers superior dimensional consistency. Similarly, the term Fine Wall Straight Seam Steel Pipe highlights the high-quality finish and tight tolerances achievable, making these tubes suitable for more refined engineering and architectural applications.
The manufacturing of a <产品名字> involves high-frequency induction welding or submerged arc welding of steel coils, ensuring a clean, strong, and uniform longitudinal weld seam. This process allows for precise control over the wall thickness, producing tubes that are significantly lighter while maintaining structural integrity. Key parameters that define the performance and application suitability of these tubes include outer diameter, wall thickness, length, steel grade, and the specific standard to which they are produced. The following tables detail the common specifications and material properties.
Standard Specifications & Dimensions
| Outer Diameter (OD) | Wall Thickness (WT) | Standard Length | Common Standards |
|---|---|---|---|
| 1/2 inch (21.3 mm) to 24 inches (610 mm) | 0.5 mm to 3.0 mm (varies with OD) | 6 meters (Fixed) or 12 meters (Random) | ASTM A53, ASTM A500, EN 10219, JIS G3444 |
| 25 mm to 508 mm | 1.0 mm to 4.0 mm | Up to 12 meters (Custom lengths available) | ASTM A513, DIN 2395, GB/T 3091 |
Material Grades & Mechanical Properties
| Steel Grade | Yield Strength (Min) | Tensile Strength (Min) | Elongation | Primary Application |
|---|---|---|---|---|
| Q195, Q235, S235JR | 195 MPa - 235 MPa | 315 MPa - 360 MPa | 22% - 25% | General structure, furniture, low-pressure fluid conveyance |
| Q345, S355JR, ASTM A500 Gr B | 345 MPa - 355 MPa | 420 MPa - 490 MPa | 21% - 23% | Heavy-duty structural frameworks, mechanical parts, vehicular frames |
| ASTM A513 (1010, 1020) | 305 MPa | 365 MPa | 20% | Precision mechanical components, automotive systems |
- Tolerance: Strict adherence to dimensional tolerances on outer diameter (±0.5%) and wall thickness (±10%) is maintained.
- Surface Finish: Available in black (mill finish), galvanized (zinc-coated), or pre-primed/painted finishes for enhanced corrosion resistance.
- Weld Quality: The longitudinal weld is consistently tested via non-destructive methods like ultrasonic testing or eddy current testing to ensure zero defects.
- End Finish: Standard squared ends or custom beveled ends for welding are offered based on project requirements.
- Certification: Products are typically supplied with Mill Test Certificates (MTC) conforming to applicable international standards.
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