Pipes & Tubes · ASTM A554 / EN 10219
Rectangular Tube — ASTM A554 / EN 10219
Rectangular tube — rectangular hollow section. Rectangular tube is used for frames, supports and architectural work.
- ASTM A554 / EN 10219
- 20 grades
- EN 10204 3.1 / 3.2
Reviewed by the Kanak Steel & Engineering Co. technical team · Updated October 2026
Rectangular Tube: What to Know Before Ordering
- Rectangular hollow section
- Polished or mill finish
- Cut lengths
Rectangular Tube Materials & Grades
| Grade | Material standard | Best for |
|---|---|---|
| Inconel 825 rectangular tube | ASTM A554 (ornamental) · A312 / A790 for pressure | Sulphuric and phosphoric acid service, chloride stress-corrosion cracking and sour gas |
| SS 904L rectangular tube | ASTM A554 (ornamental) · A312 / A790 for pressure | Dilute sulphuric acid, phosphoric acid and chloride-bearing cooling water |
| SS 304 rectangular tube | ASTM A554 (ornamental) · A312 / A790 for pressure | General corrosion resistance, food, water and architectural work |
| SS 304L rectangular tube | ASTM A554 (ornamental) · A312 / A790 for pressure | Welded tanks, piping and vessels in general corrosive service |
| SS 310 / 310S rectangular tube | ASTM A554 (ornamental) · A312 / A790 for pressure | Furnaces, burners and heat treatment at high temperature |
| SS 316 / 316L rectangular tube | ASTM A554 (ornamental) · A312 / A790 for pressure | Chloride-bearing process fluids, marine air and pharmaceutical service |
| SS 321 rectangular tube | ASTM A554 (ornamental) · A312 / A790 for pressure | High-temperature service between 425 and 815 °C |
| SS 347 rectangular tube | ASTM A554 (ornamental) · A312 / A790 for pressure | Welded high-temperature piping in refineries and power plants |
| Duplex 2205 rectangular tube | ASTM A554 (ornamental) · A312 / A790 for pressure | Strength with chloride resistance at a stainless-steel budget |
| Super Duplex 2507 rectangular tube | ASTM A554 (ornamental) · A312 / A790 for pressure | Seawater and high-chloride service where strength also matters |
| Inconel 600 rectangular tube | ASTM A554 (ornamental) · A312 / A790 for pressure | High-temperature oxidation, caustic and nuclear service |
| Inconel 625 rectangular tube | ASTM A554 (ornamental) · A312 / A790 for pressure | Seawater, high strength and high temperature in one alloy |
| Inconel 718 rectangular tube | ASTM A554 (ornamental) · A312 / A790 for pressure | Very high strength at temperatures up to about 650 °C |
| Incoloy 800 / 800H / 800HT rectangular tube | ASTM A554 (ornamental) · A312 / A790 for pressure | Furnaces, petrochemical heaters and high-temperature piping |
| Hastelloy C276 rectangular tube | ASTM A554 (ornamental) · A312 / A790 for pressure | The most aggressive mixed acids, wet chlorine and hypochlorite |
| Hastelloy C22 rectangular tube | ASTM A554 (ornamental) · A312 / A790 for pressure | Mixed oxidising and reducing acids, and weld overlays |
| Monel 400 rectangular tube | ASTM A554 (ornamental) · A312 / A790 for pressure | Seawater, hydrofluoric acid and marine service |
| Super Duplex S32760 rectangular tube | ASTM A554 (ornamental) · A312 / A790 for pressure | Seawater firewater, injection and offshore piping |
| S275JR rectangular tube | EN 10219 square & rectangular sections | General structures, frames and fabrication |
| S355J2+N rectangular tube | EN 10219 square & rectangular sections | Heavy structures, cranes and offshore frames |
Other pipes & tubes
Rectangular tube — questions buyers ask
Are rectangular tubes structural?
In carbon steel they follow EN 10219 / 10210 for structures; stainless versions are mostly ornamental to ASTM A554.
Which grades are rectangular tubes available in?
Inconel 825, SS 904L, SS 304, SS 304L, SS 310 / 310S, SS 316 / 316L, SS 321, SS 347, Duplex 2205, Super Duplex 2507, Inconel 600, Inconel 625, Inconel 718, Incoloy 800 / 800H / 800HT, Hastelloy C276, Hastelloy C22, Monel 400, Super Duplex S32760, S275JR, S355J2+N.
Which standard covers rectangular tube dimensions?
ASTM A554 / EN 10219. The material standard depends on the grade.
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