Leading SA-240/SA-249, A240/A 249 Stainless Steel Welded Pipe Supplier in China
Engineered for high-performance heat transfer applications, our A240 / A249 welded pipes are manufactured from premium A240 plate and certified to the exacting A249 standard. They deliver exceptional weld integrity and corrosion resistance, ensuring superior reliability in boilers, superheaters, and heat exchangers.
SA-240/SA-249, A240/A 249 Welded Pipe - Detailed Specifications
| Specification Parameter | Details |
|---|---|
| Product Name | A240 / A 249 Stainless Steel Welded Pipe / Tube |
| Governing Standard | ASTM A249 / ASME SA-249 (for the finished welded tube) |
| Raw Material Standard | ASTM A240 / ASME SA-240 (for the plate/strip starting material) |
| Common Grades | 304, 304L, 316, 316L, 321, 347 |
| Outer Diameter (OD) | 1/2 to 5" (12.7mm to 127mm)" |
| Wall Thickness (WT) | 0.035 to 0.320" (0.89mm to 8.13mm)" |
| Length | Up to 18 meters (60 ft), or custom lengths |
| Key Features | 100% welded and annealed. Superior surface finish, tight dimensional tolerances, and guaranteed weld integrity. Designed for heat transfer. |
| Testing & Inspection | 100% Hydrostatic Test or Eddy Current Test, Mechanical Tests (Flattening, Flange, Reverse Bend), Chemical Analysis, PMI |
| Surface Finish | Annealed and Pickled, Bright Annealed |
Understanding SA-240/SA-249, A240/A 249
What It Is:
These dual standards ensure complete quality control, from the raw stainless steel to the final, high-integrity welded tube.
A240/SA-240: Defines the precise chemical and mechanical properties of the high-quality stainless steel plate or strip used as the starting material.
A249/SA-249: The specification for the finished welded tube itself, mandating the welding process, heat treatment, and rigorous testing required for boiler and heat exchanger service.
A Combined Guarantee: Using A240 material to produce an A249 tube creates a fully traceable, high-reliability product designed for critical service.
Why It Is Your Core Focus:
Our strict adherence to both standards is our promise of delivering unparalleled safety and performance for your heat transfer equipment.
It guarantees exceptional weld integrity and soundness, as A249 mandates rigorous non-destructive testing on every single tube.
It ensures superior corrosion resistance and high-temperature performance, as the material chemistry is strictly controlled by the A240 standard.
This dual certification provides you with fully compliant, traceable material and MTCs, simplifying project approvals and ensuring total system reliability.
SA-240/SA-249, A240/A 249 Stainless Steel Material Properties
| Element | Content (%) |
|---|---|
| Chromium (Cr) | 16.0 - 20.0 |
| Nickel (Ni) | 8.0 - 14.0 |
| Molybdenum (Mo) | ≤ 3.00 (when present) |
| Carbon (C) | ≤ 0.08 |
| Manganese (Mn) | ≤ 2.00 |
| Silicon (Si) | ≤ 0.75 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.030 |
| Property | Property Value (Minimum) |
|---|---|
| Tensile Strength | 70 - 75 ksi (485 - 515 MPa) |
| Yield Strength (0.2% Offset) | 25 - 30 ksi (170 - 205 MPa) |
| Elongation in 2 (50mm)" | 35% |
| Hardness | ≤ 90 HRB / 192 HBW (Maximum) |
Applications of SA-240/SA-249, A240/A 249 Welded Pipe
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Get a Quote for Certified A240 / A249 Welded Pipe
Enhance the reliability and efficiency of your heat transfer systems with our fully certified A240 / A249 welded pipe. Built for critical boiler and heat exchanger service, it guarantees performance and compliance. Contact our experts today to discuss your project requirements and receive a competitive quotation.
