ASTM A249 TP304 SS Welded Bright Annealed Boiler Tube
ASTM A249 is the standard specification for welded austenitic steel pipe used in applications such as boilers, superheaters, heat exchangers, and condensers.
GNEE is a professional supplier of welded stainless steel pipe, offering high-quality ASTM A249 TP304 stainless steel pipe. We export to over 60 countries annually and have received consistent praise.GNEE's ASTM A249 TP304 stainless steel bright annealed pipe is manufactured using a bright annealing process (controlled atmosphere annealing followed by surface polishing) to achieve an excellent surface finish (Ra ≤ 0.4 μm). The pipe has a bright, reflective appearance, is aesthetically pleasing, and easy to clean.
Standard outside diameters for ASTM A249 TP304 bright annealed heat exchanger pipe range from 6.0 to 114.3 mm, with wall thicknesses from 0.5 to 3.0 mm. The outside diameter tolerance is ±0.10 mm, and the wall thickness tolerance is ±10%. These tubes also offer short-term oxidation resistance up to 870°C and continuous operating temperatures up to 425°C, making them ideal for high-performance heat exchanger applications.
ASTM A249 TP304 Stainless Steel Tubing Specification
| Item | Description |
|---|---|
| Standard Specification | ASTM A249 / ASME SA249 TP304 Austenitic Stainless Steel Tubing |
| Manufacturing Type | ERW / Welded / Fabricated / CDW / DOM / CEW / 100% X-Ray Welded |
| Delivery Condition | Annealed & Pickled (AP), Polished, Bright Annealed (BA), Cold Drawn, MF |
| Surface Finish Options | BA, 2B, No.4, No.1, No.3, No.8, 8K, HL, 2D, 1D, Mirror Polished, 180G / 320G / 400G Satin or Hairline, 400G / 500G / 600G / 800G Mirror Finish - Custom finishes available as per customer's requirement |
| Outside Diameter (OD) | 6.35 mm to 114.3 mm |
| Wall Thickness Range | 0.5 mm to 13 mm |
| Applicable Standards | SUS, JIS, AISI, ASTM, GB, DIN, EN |
| Tolerance | OD: ±0.2 mm Thickness: ±10% or as requested Length: ±10 mm |
| Technique | Welded Austenitic Stainless Steel - Cold Drawn, Cold Rolled, Hot Rolled, or Extrusion Tube |
| Value-Added Services | Cutting, Beveling, Threading, Polishing (Electro & Commercial), Drawing & Expansion to required size and length, Ultrasonic Testing, Destructive & Non-Destructive Tests, Annealed & Pickled Bending |
| Processing Services | Bending, Welding, Decoiling, Punching, Cutting, Moulding |
Chemical Properties of ASTM A249 TP304 SS Welded pipe
| Property | Value | ||
| Carbon | 0.08% | Phosphorus | 0.05% |
| Chromium | 18-20% | Silicon | 1% |
| Manganese | 2% | Sulfur | 0.03% |
| Nickel | 8-11% | / | / |
Mechanical Properties of ASTM A249 TP304 SS round pipe
| Grade | Tensile Strength | Yield Point | Elongation |
| TP304 | 515 Mpa | 205 Mpa | 35% |
Uses & Application of ASTM A249 TP304 welded round pipe
Common industrial services (Petroleum, chemical, paper, fertilizer, fabric, aviation and nuclear)
Fluid, gas and oil industry
Heat transmission and pressure service
Construction and ornamental
Condenser, Hydraulic,Boilers and Heat exchangers system
GNEE Stainless Steel is a manufacturer, supplier, and exporter of ASTM A249 TP304 stainless steel. GNEE boasts a comprehensive production line, including automatic welding and bright annealing equipment, enabling us to meet diverse needs. We also offer value-added services such as U-bends, bright annealed welded tubes, and cold-drawn precision tubes. Email: info@gneestainless.com
ASTM A249 / ASME SA249 TP304 Stainless Steel Tubing – Test Certificates & Packaging
| Item | Description |
|---|---|
| Test Certificate | DFARS Compliant |
| Material Test Certificates (MTC) | EN 10204/3.1B, EN 10204 3.1, and EN 10204 3.2 available upon request |
| Radiography Test | 100% X-Ray / Radiography Test Report Provided |
| Raw Material Certificate | Supplied with every batch, verifying chemical and mechanical properties |
| Third-Party Inspection Report | Available from agencies such as SGS, BV, TUV, or customer-specified inspection body |
| Fumigation Certificates | Provided for export shipments where required |
| Heat Treatment Charts | Documented for each lot to ensure compliance with annealing specifications |
| Origin Certificate | Form A provided under the Generalized System of Preferences (GSP) Scheme |
| Packaging | Packed in PE fabric bundles or plywood boxes, wrapped in plastic film, or standard seaworthy export packing - customized packaging available as per customer's request |
