ASTM A554 TP304 is a standard specification for welded stainless steel mechanical tubing made from TP304 austenitic stainless steel for applications requiring corrosion resistance, mechanical strength, and a good appearance.
GNEE offers high-quality ASTM A554 TP304 mechanically welded stainless steel pipe. This austenitic stainless steel (corresponding to AISI 304/UNS S30400) is welded using high-frequency electric resistance welding (ERW) or argon arc welding (TIG) processes. Annealing is performed to relieve weld stress and enhance surface consistency. The welds are smooth and defect-free, and the inner wall is smooth. Customizable large-diameter, thin-walled, and special-shaped pipes are available. These pipes are specifically designed for applications such as decorative risers/guardrails, elevator car panels, food processing equipment housings, household appliance components, and industrial instrument housings.
Before shipment, ASTM A554 TP304 stainless steel welded pipes undergo 100% visual inspection, dimensional accuracy measurement (OD/wall thickness tolerance ±0.10-0.30mm), and surface defect detection. They are backed by a manufacturer's warranty and a third-party inspection report.
ASTM A554 TP304 Stainless Steel Welded Tube Chemical Composition
| Grade | Carbon | Nickel | Manganese | Sulfur | Chromium | Phosphorus | Silicon |
| 304 | 0.08 | 8.0-11.0 | 2 | 0.03 | 18.0-20.0 | 0.045 | 1 |
SA554 Grade Mt 304 Tubing Mechanical Properties
| Material | Temperure | Heat | Yield Strength | Tensile Strength | Elongation |
| Min.º F(º C) | Treatment | Ksi (MPa), Min. | Ksi (MPa), Min. | ||
| 304 | 1900 (1040) | Solution | 30(205) | 75(515) | 35 |
ASME SA554 Tp304 Square Pipe Equivalent
| Grade | Unified Numbering System | Euronorm | Old British | Swedish SS | Japanese Industrial Standards | ||
| No | Name | British Standards | European Standards | ||||
| ASTM A554 TP304 | S30400 | 1.4301 | X5CrNi18-10 | 304S31 | 58E | 2332 | SUS 304 |
ASTM A554 Type 304 Tube Physical Properties
Grade |
Mean Coefficient of Thermal Expansion (μm/m/°C) | Density (kg/m3) | Elastic Modulus (GPa) | Specific Heat 0-100°C (J/kg.K) | Thermal Conductivity (W/m.K) | Electrical Resistivity (nΩ.m) | |||
| 0-100°C | 0-315°C | 0-538°C | at 100°C | at 500°C | |||||
| TP304 | 17.2 | 17.8 | 18.4 | 8000 | 193 | 500 | 16.2 | 21.5 | 720 |
Applications of ASTM A554 TP304 Welded Pipes:
1. Food Processing Industry
2. Pharmaceutical Industry
3. Chemical Processing Industry
4. Oil and Gas Industry
5. Architecture and Construction
6. Marine Applications
7. Heating, Ventilation, and Air Conditioning
8. Water Treatment Plants
9. Agricultural Equipment
Gnee boasts a production area of over 50,000 square meters, equipped with CNC cutting, slitting, and polishing lines. With an annual export volume exceeding 30,000 tons, Gnee is fully ISO 9001, SGS, and BV certified.
100% PMI testing, ultrasonic flaw detection, and mechanical property testing are performed.
1. Liner paper available.
2. PVC protective film available.
Price and Items:
FOB, CIF, DDU, FCA, EXW, etc.
Custom sizes and thicknesses of stainless steel pipes are available. Please feel free to contact us for more information.Mail:es@gescosteel.com
