Home > Welded Tubes > ASTM A554
Tubes designed for strength + beauty + durability across architectural, structural & decorative applications.ASTM A554 defines welded stainless-steel tubes manufactured specifically for mechanical and ornamental use. These tubes are known for:
From architectural facades to interior railings, furniture frames, automotive trims, and designer structures, ASTM A554 tubes deliver performance that other metals simply cannot match.
These are welded stainless-steel tubes produced with precision strip, tight dimensional control, and a polished finish suitable for visible, high-aesthetic, or structural applications.
Key features include:
| Feature | Mechanical Tubes | Ornamental Tubes |
|---|---|---|
| Purpose | Load-bearing, structural | Aesthetic, decorative |
| Strength | Higher (thicker WT) | Medium |
| Finish | Mill / polish | 400 grit / Mirror / HL / PVD |
| Shape | Round, square, rectangle | Square, rectangle, custom |
| Usage | Frames, supports | Railings, facades, interiors |
ASTM A554 covers both—mechanical & ornamental—depending on the selected grade and finish.
304 / 304L — The Most Versatile Grade (All-purpose)
316 / 316L — Marine & Coastal Specialists
201 / 202 — Economical Ornamental Grades
409 / 430 — Automotive & Industrial Finishes
Category: ASTM A554 Stainless Steel Mechanical & Ornamental Tubes
Grades: 201 • 202 • 304 • 304L • 316 • 316L • 409 • 430
Shapes: Round • Square • Rectangular • Custom Profiles
Brand: INOX STEEL INDIA
| Section | Parameter | ASTM A554 Specification — Mechanical / Ornamental SS Tubes |
|---|---|---|
| Standard | Specification | ASTM A554 — Welded stainless-steel mechanical tubing |
| Product Type | Mechanical, structural, architectural & ornamental applications | |
| Available Grades | Austenitic | 201, 202, 304, 304L, 316, 316L |
| Ferritic | 409, 430 | |
| Shapes Available | Round | 6 mm – 168 mm |
| Square | 10×10 – 150×150 mm | |
| Rectangular | 12×24 – 100×200 mm | |
| Custom Profiles | Oval, D-shape, flat-sided oval, elliptical | |
| Wall Thickness Range | WT | 0.5 mm – 6.0 mm |
| Finish Options | Mill Finish | For fabrication use |
| Polish 180 / 240 / 320 / 400 Grit | Decorative, architectural | |
| Mirror Finish (8K / Super Mirror) | Ornamental, interior design | |
| Hairline Finish (HL) | Elevation, partitions | |
| PVD Coated (Gold / Rose Gold / Black / Bronze) | Luxury architectural | |
| Manufacturing Process | Welding | TIG / High-frequency welded (ERW) |
| Weld Bead | Weld bead removed & polished for seamless look | |
| Mechanical Properties | Tensile Strength | 515–630 MPa (304) |
| Yield Strength | 205–310 MPa | |
| Hardness | ≤ 90 HRB | |
| Dimensional Tolerances | OD / Width | ±0.20–0.50 mm depending on size |
| WT | ±10% | |
| Length | ±10 mm | |
| Testing Requirements | Mandatory | Flattening, flaring, weld integrity, surface finish |
| Optional | Hardness test, tensile test, corrosion test | |
| Corrosion Resistance | 304/316 | Highest for outdoor & coastal applications |
| 201/202 | Good for indoor decorative use | |
| Application Sectors | Structural | Canopies, gates, railings, frames |
| Architectural | Interiors, partitions, elevations | |
| Automotive | Exhaust tubes, trims | |
| Furniture | Chairs, tables, railing supports | |
| HSN Code | Stainless Tubes | 73064000 |
Architectural & Interior Design
Infrastructure & Construction
Furniture & Fabrication
Automotive & Industrial
Public Spaces & Urban Design
| OD (mm) | WT (mm) | Application |
|---|---|---|
| 6 – 19 mm | 0.5 – 1.2 | Furniture, display systems |
| 19 – 50.8 mm | 0.7 – 2.0 | Railings, gates, canopies |
| 50.8 – 76.2 mm | 1.2 – 3.0 | Structural frames, architecture |
| 76.2 – 168 mm | 1.5 – 6.0 | Heavy ornamental, columns |
| Size (mm) | WT (mm) | Use Case |
|---|---|---|
| 10×10 – 25×25 | 0.6 – 1.5 | Furniture, indoor partition frames |
| 25×25 – 75×75 | 0.8 – 3.0 | Railings, facade frames |
| 100×100 – 150×150 | 2.0 – 6.0 | Structural architectural elements |
| Size (mm) | WT (mm) | Use Case |
|---|---|---|
| 12×24 – 50×100 | 0.7 – 2.5 | Railings, ceilings, interior frames |
| 60×120 – 100×200 | 1.5 – 6.0 | Heavy architecture, canopies, trusses |
| Finish Type | Roughness / Look | Best For |
|---|---|---|
| Mill Finish | Raw, unpolished | Fabricators, hidden structural parts |
| 180 Grit | Matte fine polish | Furniture, indoor fabrication |
| 240 Grit | Semi-fine | Retail fixtures, mild outdoor use |
| 320 Grit | High-end smooth | Architectural interiors |
| 400 Grit | Premium polish | Hotel/commercial architecture |
| 8K / Mirror Finish | Super mirror reflective | Luxury interiors, showrooms |
| Hairline (HL) | Linear pattern | Elevations, partitions |
| PVD Coated | Ti-ion coating | Premium decor, malls, hotels |
| Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Why Chosen |
|---|---|---|---|
| 304/304L | 515–630 | 205–215 | Versatile, corrosion-resistant |
| 316/316L | 530–700 | 215–230 | Marine-grade, luxury architecture |
| 201/202 | 480–550 | 200–240 | Economy ornamental grade |
| 409/430 | 380–520 | 170–210 | Automotive & industrial |
| Environment | 201/202 | 304/304L | 316/316L |
|---|---|---|---|
| Indoor – Dry | ⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ |
| Outdoor – Urban | ⭐⭐⭐ | ⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ |
| Coastal / Marine | ⭐ | ⭐⭐⭐ | ⭐⭐⭐⭐⭐ |
| Chemical / Chlorides | ⭐⭐ | ⭐⭐⭐ | ⭐⭐⭐⭐⭐ |
| Food Contact | ⭐⭐ | ⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ |
👉 304/316 recommended for outdoor use.
👉 201/202 for indoor decorative use only.
| Property | 201/202 | 304/304L | 316/316L |
|---|---|---|---|
| Bendability | ⭐⭐⭐⭐ | ⭐⭐⭐⭐ | ⭐⭐⭐⭐ |
| Weldability | ⭐⭐⭐ | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ |
| Polishing Quality | ⭐⭐⭐ | ⭐⭐⭐⭐ | ⭐⭐⭐⭐ |
INOX Production Advantage
Mandatory Tests
Optional Tests
| Application | Grade Recommended | Why |
|---|---|---|
| Indoor railings | 201/202 | Economical, polish-friendly |
| Outdoor railings | 304 | Good corrosion resistance |
| Coastal locations | 316/316L | Superior salt resistance |
| Furniture | 201/202 | Lightweight & economical |
| Luxury hotels/malls | 304 Mirror / 316 Mirror | High aesthetic value |
| Structural frames | 304 / 316 | Strength + corrosion resistance |
| Automotive trims | 409 / 430 | Ferritic for heat & economy |
| Grade | Finish | Price (INR/Kg) | USD/Kg |
|---|---|---|---|
| 201/202 | Polished | ₹160 – ₹240 | $2 – $3 |
| 304/304L | Polished | ₹240 – ₹380 | $3.5 – $5 |
| 316/316L | Polished | ₹380 – ₹550 | $5 – $7 |
Mirror Finish (any grade): 8K | + ₹20–₹40/kg | +$0.50/kg
PVD Coated: Gold/Black/Rose | + ₹60–₹100/kg | +$1–$1.5
1. Perfect Polish Uniformity
Whether it is 180/240/320/400 grit, Hairline (HL) or 8K Mirror, our tubes are polished using automated machines ensuring:
2. Highest Precision: Square • Rectangle • Round • Custom Profiles
INOX maintains:
3. Multiple Grades for Every Budget & Application
4. Strong, Clean, Seamless-Looking Welds
Our ASTM A554 welded tubes have:
3. Multiple Grades for Every Budget & Application
5. Trusted Partner for Architectural, Interior & Fabrication Projects
Our tubes are used across:
We supply large volumes across India & export to:
UAE • Saudi Arabia • Oman • Bahrain • Kuwait • Qatar • Europe • Africa • Singapore • Malaysia
Standard Packaging
Premium Architectural
Export Packaging
52-A, Mulji Thackersi Bldg, Islampura Street, Shop No. 10, Near Alankar Cinema, Mumbai – 400 004
steel@inoxsteelindia.in
+91 9930796690
Monel 400 or Inconel 625. Hastelloy C22 (or C276 for reducing environments). Yes—when manufactured with controlled heat input and NDT. INOX supplies project-approved welded tubes. Yes—BV, DNV, LR, TUV on request Which alloy is best for seawater?
Which alloy handles mixed acids best?
Are welded nickel alloy tubes reliable for critical service?
Do you provide third-party inspection?
INOX STEEL INDIA is a leading manufacturer of ASTM A554 stainless steel mechanical and ornamental tubes in grades 201, 202, 304, 304L, 316, and 316L. Available in round, square, rectangular & custom profiles with 180–400 grit, mirror, hairline & PVD finishes. Ideal for railings, architecture, interiors & structural fabrication. Exporter to GCC, Africa & Europe.