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Quality Structural Rectangular Stainless Steel Pipe Welded High Strength Stainless Steel RHS factory
Quality Structural Rectangular Stainless Steel Pipe Welded High Strength Stainless Steel RHS factory

Structural Rectangular Stainless Steel Pipe Welded High Strength Stainless Steel RHS

Basic Properties
Place of Origin: MADE IN CHAINA
Brand Name: Baosteel，TISCO
Certification: EN 10204 Type 3.1 / 3.2 available
Model Number: 201 / 202 / 301 / 302 / 303 / 304 / 304L / 305 / 309S / 310S / 316 / 316L / 317 / 317L / 321 / 347 / 409L / 410 / 420 / 430 / 440C / 2205 / 2507
Trading Properties
Minimum Order Quantity: 100kg
Price: Negotiable (Request a Quote)
Payment Terms: T/T，D/P，D/A，Western Union，PayPal
Supply Ability: 10000tons
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Molybdenum Alloy Stainless Steel Pipe

Stainless Steel Pipe Chloride Resistance

Structural Rectangular Stainless Steel Pipe
Product Summary
The Structural Stainless Steel Rectangular Hollow Section (RHS) is a cold-formed or hot-finished welded hollow profile specifically engineered for load-bearing applications in construction, infrastructure, and industrial projects. Manufactured from high-strength austenitic or duplex stainless steel ...

Product Details

Highlight:

Structural Rectangular Stainless Steel Pipe

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Rectangular Stainless Steel Pipe Welded

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High Strength Stainless Steel RHS
Country Of Origin: MADE IN CHAINA
Brand: Baosteel，TISCO
Certifications: ISO/EN 10204 Type 3.1 / 3.2 Available
Grade: 201 / 202 / 301 / 302 / 303 / 304 / 304L / 305 / 309S / 310S / 316 / 316L / 317 / 317L / 321 / 347 / 409L / 410 / 420 / 430 / 440C / 2205 / 2507 / 630 (17-4PH)
MOQ: 100kg
Price: Negotiable (Request A Quote)
Packaging: Wooden Case / Wooden Pallet / Steel Frame / Carton / Woven Bag
Delivery Time: 15-25days
Payment Terms: T/T，D/P，D/A，Western Union，PayPal
Supply Capacity: 10000tons
Product Description

The Structural Stainless Steel Rectangular Hollow Section (RHS) is a cold-formed or hot-finished welded hollow profile specifically engineered for load-bearing applications in construction, infrastructure, and industrial projects. Manufactured from high-strength austenitic or duplex stainless steel grades, this section offers an exceptional combination of high strength-to-weight ratio, corrosion resistance, fire resistance, and long-term durability. Unlike decorative or architectural grades, structural RHS is produced with stricter mechanical property requirements and enhanced weld integrity for reliable performance under static and dynamic loads.

Product Specifications
Parameter Details
Standards EN 10219-2, ASTM A554, JIS G3446
Available Grades 304, 304L, 316, 316L, Duplex 2205
Rectangular Sizes Width: 40 mm – 400 mm; Height: 20 mm – 200 mm
Wall Thickness 1.5 mm – 10.0 mm
Length 6m, 12m, or custom lengths up to 18m
Manufacturing Process Cold-formed welded or Hot-finished seamless
Welding Process TIG (GTAW), Laser, or ERW
Heat Treatment Annealed after manufacturing
Surface Finish Mill finish, pickled, or primed
End Finish Plain ends or beveled ends
Chemical Composition (Typical Values, %)
Grade C ≤ Si ≤ Mn ≤ P ≤ S ≤ Cr Ni Mo N
304 0.08 0.75 2.00 0.045 0.030 18.0-20.0 8.0-10.5 – –
304L 0.03 0.75 2.00 0.045 0.030 18.0-20.0 8.0-12.0 – –
316 0.08 0.75 2.00 0.045 0.030 16.0-18.0 10.0-14.0 2.0-3.0 –
316L 0.03 0.75 2.00 0.045 0.030 16.0-18.0 10.0-14.0 2.0-3.0 –
Duplex 2205 0.03 1.00 2.00 0.030 0.020 22.0-23.0 4.5-6.5 3.0-3.5 0.14-0.20

Composition per EN 10219-2 and ASTM A554.

Mechanical Properties (at Room Temperature)
Grade Tensile Strength (MPa) min Yield Strength (MPa) min Elongation (%) min Hardness (HB) max
304 515 205 35 201
304L 485 170 35 201
316 515 205 35 217
316L 485 170 35 217
Duplex 2205 620 450 25 290

Tested in accordance with EN ISO 6892-1 or ASTM E8.

Section Properties (Example – 100×50×4mm – 304)
Property Value
Mass per meter 8.8 kg/m
Cross-sectional area 1,120 mm²
Moment of inertia (Ixx) 1.53 × 10⁶ mm⁴
Moment of inertia (Iyy) 0.54 × 10⁶ mm⁴
Section modulus (Wxx) 30.6 × 10³ mm³
Section modulus (Wyy) 21.6 × 10³ mm³
Radius of gyration (ix) 37.0 mm
Radius of gyration (iy) 22.0 mm

Full section property tables available upon request for all sizes and grades.

Key Features

High Strength-to-Weight Ratio – Efficient load-bearing capacity

Excellent Corrosion Resistance – Suitable for indoor, outdoor, and marine environments

Fire Resistance – Maintains structural integrity at elevated temperatures

Low Maintenance – No painting or coating required for corrosion protection

Good Ductility – Absorbs energy without brittle failure

Excellent Weldability – Easy to join using standard methods

100% Recyclable – Environmentally sustainable

Long Service Life – 50+ years in most environments

Dimensional Tolerances (EN 10219-2)
Parameter Tolerance
Width / Height ±1% (min ±0.5 mm, max ±5 mm)
Wall thickness ±10%
Length +0 / -3 mm for fixed lengths
Straightness 0.15% of total length
Twist 2 mm + 0.5 mm per meter
Concave / Convex 0.8% of width
Squareness of corners 90° ± 1°
Structural Applications
Building Construction

Columns and beams

Roof trusses and purlins

Bracing members

Mezzanine floor supports

Portal frames

Infrastructure

Bridge trusses and railings

Pedestrian footbridges

Highway sign gantries

Bus shelters and canopies

Railway platform structures

Industrial

Conveyor support structures

Equipment platforms

Crane runway beams

Storage rack frames

Machine bases

Marine & Offshore

Offshore platform handrails

Dock structures

Shipbuilding components

Coastal infrastructure

Agricultural

Barn and shed frames

Livestock equipment

Greenhouse structures

Design Advantages of Stainless Steel RHS
Advantage Description
Torsional Rigidity Closed section provides excellent resistance to twisting
Uniform Strength Properties equal in both axes (square sections)
Aesthetic Appearance Clean lines for visible structural applications
Reduced Weight Hollow design minimizes material while maintaining strength
Corrosion Allowance No additional thickness required for rust loss
Life Cycle Cost Lower total cost due to eliminated coating and reduced maintenance
Structural Grade Comparison
Property Carbon Steel (S355) Stainless Steel 304 Stainless Steel 316 Duplex 2205
Yield strength (MPa) 355 205 205 450
Corrosion resistance Poor (requires coating) Excellent Excellent Excellent
Fire resistance Good (requires protection) Excellent Excellent Excellent
Maintenance High (repainting) Low Low Low
Initial cost Low Medium High High
Life cycle cost High Low Low Low
Fabrication Guidelines
Process Recommendation
Cutting Band saw, abrasive wheel, or plasma cutter
Welding TIG (GTAW) or MIG (GMAW); use matching filler metal (ER308/ER316/ER2209)
Drilling Cobalt or carbide drill bits; use cutting fluid
Machining Use sharp tools; lower cutting speeds than carbon steel
Bending Use mandrel or roll bender; annealed condition preferred
Contact Us

For inquiries, technical datasheets, section property tables, or custom sizes, please contact our sales team.

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