China Stainless Steel
stainless steel
rectangular
pipe & tube
TeCarve is a stainless steel rectangular pipe manufacturer and China stainless steel rectangular tube supplier for structural, architectural and industrial fabrication. Available welded and seamless profiles cover widths from 10 mm to 200 mm, heights from 10 mm to 100 mm and grades including 304, 304L, 316 and 316L. Standard-item delivery is typically 7–10 days, while customized dimensions, lengths and finishes are available for project requirements.
Specifications
Available Sizes by Standard
Markets: N. America — welded mechanical/structural/ornamental rectangular tube
| Size W×H (mm) | WT (mm) | Side Tol. | WT Tol. |
|---|---|---|---|
| 20×10 | 1.0 | ±0.38mm | ±10.0% |
| 30×15 | 1.2 | ±0.38mm | ±10.0% |
| 40×20 | 1.5 | ±0.51mm | ±10.0% |
| 50×25 | 1.5 | ±0.51mm | ±10.0% |
| 60×30 | 2.0 | ±0.51mm | ±10.0% |
| 80×40 | 2.0 | ±0.76mm | ±10.0% |
| 100×50 | 2.5 | ±0.76mm | ±10.0% |
| 120×60 | 3.0 | ±0.76mm | ±10.0% |
| 150×75 | 3.0 | ±1.52mm | ±10.0% |
| 200×100 | 4.0 | ±1.52mm | ±10.0% |
- Supply Length / Form: Fixed lengths 1–12 m; custom lengths and cut-to-length available
- Available Grades: 304, 304L, 316, 316L, 201, 430
- Surface Finish: Polished, mirror, brushed, or pickled
- Tolerance Compliance: Per ASTM A554, EN 10296-2, JIS G3446, or GB/T 18705 shaped-tube tolerance tables
Markets: Europe — welded stainless steel tube for general engineering (shaped tube)
| Size W×H (mm) | WT (mm) | Side Tol. | WT Tol. |
|---|---|---|---|
| 20×10 | 1.5 | ±0.30mm (±3.0%) | ±0.19mm (±12.5%) |
| 40×20 | 2.0 | ±0.40mm (±2.0%) | ±0.25mm (±12.5%) |
| 60×30 | 2.5 | ±0.60mm (±2.0%) | ±0.31mm (±12.5%) |
| 80×40 | 3.0 | ±0.80mm (±2.0%) | ±0.38mm (±12.5%) |
| 100×50 | 3.0 | ±1.00mm (±2.0%) | ±0.38mm (±12.5%) |
| 150×75 | 4.0 | ±1.50mm (±2.0%) | ±0.50mm (±12.5%) |
- Supply Length / Form: Fixed lengths 1–12 m; custom lengths and cut-to-length available
- Available Grades: 304, 304L, 316, 316L, 201, 430
- Surface Finish: Polished, mirror, brushed, or pickled
- Tolerance Compliance: Per ASTM A554, EN 10296-2, JIS G3446, or GB/T 18705 shaped-tube tolerance tables
Markets: Japan, Southeast Asia — stainless steel tube for machine & structural purposes
| Size W×H (mm) | WT (mm) | Side Tol. | WT Tol. |
|---|---|---|---|
| 30×20 | 1.2 | ±0.30mm (±2.0%) | ±0.15mm (±12.5%) |
| 40×20 | 1.6 | ±0.40mm (±2.0%) | ±0.20mm (±12.5%) |
| 50×25 | 1.6 | ±0.50mm (±2.0%) | ±0.20mm (±12.5%) |
| 75×45 | 2.3 | ±0.75mm (±2.0%) | ±0.29mm (±12.5%) |
| 100×50 | 3.2 | ±1.00mm (±2.0%) | ±0.40mm (±12.5%) |
- Supply Length / Form: Fixed lengths 1–12 m; custom lengths and cut-to-length available
- Available Grades: 304, 304L, 316, 316L, 201, 430
- Surface Finish: Polished, mirror, brushed, or pickled
- Tolerance Compliance: Per ASTM A554, EN 10296-2, JIS G3446, or GB/T 18705 shaped-tube tolerance tables
Markets: China domestic & Belt-and-Road — stainless steel welded structural tube
| Size W×H (mm) | WT (mm) | Side Tol. | WT Tol. |
|---|---|---|---|
| 20×10 | 1.0 | ±0.20mm (±2.0%) | ±0.13mm (±12.5%) |
| 40×20 | 1.5 | ±0.40mm (±2.0%) | ±0.19mm (±12.5%) |
| 60×30 | 2.0 | ±0.60mm (±2.0%) | ±0.25mm (±12.5%) |
| 100×50 | 3.0 | ±1.00mm (±2.0%) | ±0.38mm (±12.5%) |
| 150×75 | 4.0 | ±1.50mm (±2.0%) | ±0.50mm (±12.5%) |
- Supply Length / Form: Fixed lengths 1–12 m; custom lengths and cut-to-length available
- Available Grades: 304, 304L, 316, 316L, 201, 430
- Surface Finish: Polished, mirror, brushed, or pickled
- Tolerance Compliance: Per ASTM A554, EN 10296-2, JIS G3446, or GB/T 18705 shaped-tube tolerance tables
Standards
→ Scroll right for full chemistry & mechanical data
| Grade | US (UNS) | EN (W.Nr.) | Japan (JIS) | China (GB/T) | C % (Max) | Si % (Max) | Mn % (Max) | P % (Max) | S % (Max) | Cr % | Ni % | Mo % | Tensile σb (Min.) | Yield σ0.2 (Min.) | Elongation (Min.) | Hardness (Max) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 304 | S30400 | 1.4301 | SUS304 | 06Cr19Ni10 | 0.08 | 0.75 | 2.00 | 0.045 | 0.030 | 18.0-20.0 | 8.0-10.5 | — | 515 MPa (75 ksi) | 205 MPa (30 ksi) | 35% | ≤92 HRB / ≤215 HV |
| 304L | S30403 | 1.4307 | SUS304L | 022Cr19Ni10 | 0.030 | 0.75 | 2.00 | 0.045 | 0.030 | 18.0-20.0 | 8.0-12.0 | — | 485 MPa (70 ksi) | 170 MPa (25 ksi) | 35% | ≤92 HRB / ≤215 HV |
| 316 | S31600 | 1.4401 | SUS316 | 06Cr17Ni12Mo2 | 0.08 | 0.75 | 2.00 | 0.045 | 0.030 | 16.0-18.0 | 10.0-14.0 | 2.0-3.0 | 515 MPa (75 ksi) | 205 MPa (30 ksi) | 35% | ≤95 HRB / ≤215 HV |
| 316L | S31603 | 1.4404 | SUS316L | 022Cr17Ni12Mo2 | 0.030 | 0.75 | 2.00 | 0.045 | 0.030 | 16.0-18.0 | 10.0-14.0 | 2.0-3.0 | 485 MPa (70 ksi) | 170 MPa (25 ksi) | 35% | ≤95 HRB / ≤215 HV |
| 321 | S32100 | 1.4541 | SUS321 | 06Cr18Ni11Ti | 0.08 | 0.75 | 2.00 | 0.045 | 0.030 | 17.0-19.0 | 9.0-12.0 | — | 515 MPa (75 ksi) | 205 MPa (30 ksi) | 35% | ≤95 HRB / ≤215 HV |
| 430 | S43000 | 1.4016 | SUS430 | 10Cr17 | 0.12 | 1.00 | 1.00 | 0.040 | 0.030 | 16.0-18.0 | — | — | 450 MPa (65 ksi) | 205 MPa (30 ksi) | 22% | ≤89 HRB / ≤200 HV |
- Standards Conformance: ASTM A554/A312 · EN 10296/10217-7 · JIS G3446/G3468 · GB/T 12770/18705 · ISO 1127
- Delivery Condition: Solution Annealed & Pickled (AP) / Bright Annealed (BA) / Polished, or as requested.
- Mill Test Certificate: 100% full material traceability with EN 10204 3.1 MTC provided with every shipment.
Features
• Sleek rectangular geometry
• Excellent mechanical strength
• Rust and weather-resistant surface
• Decorative and structural uses
• Commercial and residential construction
• Furniture frames and handrails
• Machinery and equipment support
• Signage structures and display systems
Applications
For structural rectangular tube projects, explore how to verify our corner radius consistency, weld seam integrity, tensile testing, and mill test certificates.
Quality Control
• Dimensional inspection and surface testing
• Non-destructive testing (NDT) for weld integrity
• Visual and mechanical property checks
• Compliance with international material standards
packaging
PVC Wrapping
& End Caps
Custom Barcoding
& Labeling
Anti-Corrosion
& Moisture Protection
Seaworthy Wooden Cases & Pallets
Rectangular Tube Packaging & Inspection Photos
Real factory, inspection, packaging and loading photos from TeCarve gallery pages.
Tailored Solutions, Timely Fulfillment
CUSTOMIZATION
& DELIVERY
Flexible Custom Manufacturing
We customize stainless steel rectangular pipe and tube by width, height, wall thickness, custom length, grade, surface finish, welded or seamless construction, and specified dimensional tolerances.
Low MOQ & Rapid Prototyping
Small batch customization and sample production are supported, helping you shorten your development cycle and market entry.
Optimized Lead Time
Most orders ship within 10–25 days after deposit. Exact timing depends on product specification, required documentation, and order volume.
Global Logistics & On-Time Delivery
For rectangular tube exports to over 50 countries, seaworthy wooden cases and pallets protect the profiles, with custom barcoding and labeling used to distinguish dimensions and finishes.
Frequently Asked Questions
What grades of stainless steel are available for rectangular tube?
Rectangular stainless steel tube is available in grades 201, 304, 304L, 316, 316L, and 321. Grade 304 is the most economical choice; grade 316L is recommended for marine, chemical, food-contact, or coastal outdoor environments.
What sizes does TeCarve offer for rectangular stainless steel tube?
Rectangular tubes are available with width from 10 mm to 200 mm, height from 10 mm to 100 mm, and wall thickness from 0.5 mm to 6 mm. Custom aspect ratios and non-standard dimensions are available. Cut-to-length and beveled or plain end processing are offered.
What standards do stainless steel rectangular tubes comply with?
Our rectangular tubes comply with ASTM A554, ASTM A312, EN 10296, EN 10217-7, JIS G3446, JIS G3468, GB/T 12770, GB/T 18705, and ISO 1127. Mill Test Certificates with chemical analysis and mechanical properties accompany every shipment.
What applications use rectangular stainless steel tubing?
Common applications include machine frames, food processing tables, conveyor structures, display fixtures, sign structures, vehicle exhaust systems, and architectural facades where both structural strength and corrosion resistance are required.
What is the structural difference between rectangular and square tube?
Rectangular tube has different second moments of area on each axis, making it stiffer in one bending direction. It is preferred for beams and horizontal supports carrying primary loads in one plane. Square tube provides equal stiffness in all lateral directions, making it better for columns and multi-axis loading.