Description
Factory-Direct Galvanized RHS Supply — AS1163 C350 rectangular hollow sections roll from our own ERW lines with in-house mill test certificates, shipped with full CE EN10219 documentation to 50+ countries.
Technical Specifications
| Parameter | Value |
|---|---|
| Designation | AS1163 C350 Galvanized Rectangular Hollow Section |
| Product Type | Galvanized Rectangular Steel Tube / Rectangular Hollow Section (RHS) |
| Steel Grade | C350 (AS1163), Gr.B (ASTM A500), S235JR, S275JR, S355JR, S355J2H, STK400, Q195–Q690 |
| Standard | ASTM A500, ASTM A53, GB/T 3091, AS1163, EN 10219, EN 10210, JIS G3466 |
| Section Shape | Rectangular |
| Size Range | 15×20 mm – 700×800 mm |
| Wall Thickness | 1–30 mm |
| Length | 5.8 m / 6 m / 11.8 m / 12 m / Random Length |
| Technique | ERW / Welded or Seamless |
| Surface Treatment | Galvanized / Black Painting / Bare |
| Tolerance | ±1% |
| Ends | Plain |
| Application | Steel structures / Construction frames / Curtain wall & facade framing / Machinery / Scaffolding / Support tubes |
| MOQ | 10 Tons |
| Origin | Shandong, China |
Application Suitability
| Industry | Typical Applications |
|---|---|
| Facade & Curtain Wall Contractors | Exposed architectural steel framing, glass curtain wall mullions, right-angle decorative profiles |
| Construction & Steel Structure Fabricators | Building frames, bridge support members, scaffolding uprights, mezzanine beams |
| Machinery Manufacturers | Equipment base frames, conveyor structures, hydraulic support columns |
| Infrastructure & EPC Projects | Solar mounting structures, sound barrier posts, signage gantries |
What Rounded Corners Cost on a Facade Frame Order
Standard ERW rectangular tubes leave R≥2t corner radii that ruin exposed architectural lines and force costly filler work on site.
When facade contractors specify sharp-corner galvanized RHS for curtain wall framing, rounded corners create visible gaps at welded joints and compromise the clean geometric aesthetic that architects demand. Sourcing true right-angle rectangular tubes from mills without dedicated forming technology means spec gaps, inconsistent corner quality across batches, and rejected inspections. [NEED_CITE: cold-formed sharp-corner rectangular tube forming requirements] As an AS1163 C350 galvanized rectangular steel tube supplier, we hold 41 invention patents for sharp-corner forming — including China’s original right-angle rectangular tube technology — covering 2,800+ specifications across 3 production lines, so architects get the crisp 90° corners their drawings require.
How Galvanized C350 RHS Matches Facade and Structural Demands
Hot-dip galvanized AS1163 C350 rectangular hollow sections deliver corrosion resistance for outdoor curtain wall framing and coastal construction without sacrificing weldability or dimensional accuracy. The C350 grade provides higher yield strength than standard S235JR, allowing thinner walls in load-bearing facade mullions while maintaining structural rigidity. Our patented sharp-corner forming process produces true 90° corners that fit flush against glass mounting brackets and architectural cladding anchors — eliminating the filler plates and grinding that rounded-corner tubes demand on site.
Engineering Compliance and Certification Requirements
Structural rectangular hollow sections for EU projects must conform to EN 10219 (cold-formed) or EN 10210 (hot-finished) with CE marking, while North American procurement typically references ASTM A500 Gr.B or Gr.C. Australian infrastructure specifies AS1163 C350/C350L0, and Middle East EPC contracts often accept dual-certified EN+ASTM material. Missing or incorrect CE documentation blocks customs clearance at EU ports, and mismatched grade equivalence between AS1163 C350 and ASTM A500 Gr.B causes material rejection during third-party inspection. [NEED_CITE: steel grade equivalence mapping between AS1163 and ASTM A500] Our in-house physical and chemical laboratory tests every heat for dimensional tolerance, mechanical properties, and zinc coating thickness before shipment.
Steel Grade Selection and Galvanizing Process
AS1163 C350 sits at the higher end of the Australian structural tube grade range, offering greater yield strength than C250 for applications requiring reduced wall thickness or longer unsupported spans. The C350 grade maps closely to ASTM A500 Gr.B and EN S355JR in minimum yield requirements, though chemical composition limits differ — procurement teams must verify mill test certificates against the governing standard rather than assume interchangeability. Hot-dip galvanizing applies a zinc coating that bonds metallurgically to the steel substrate, providing sacrificial corrosion protection for outdoor structural use; coating thickness must meet project specifications to pass third-party inspection. Our ±1% dimensional tolerance on wall thickness ensures theoretical weight invoicing matches actual delivered weight within acceptable variance, avoiding cost disputes on large-tonnage orders.
Hidden Costs of Incorrect Grade or Coating Specification
Ordering AS1163 C350 but receiving C250 material — or specifying 65-micron galvanizing but accepting 45-micron coating — triggers cascading costs: third-party inspection failure, port demurrage,返工 re-galvanizing, and project delays. Certification gaps (missing CE mark, incorrect EN standard reference on mill certificates) cause customs holds that delay delivery by weeks. Negative tolerance abuse on wall thickness reduces actual load-bearing capacity below design calculations, creating structural safety risks that only surface during final inspection. [NEED_CITE: EN 10219 dimensional tolerance requirements for cold-formed hollow sections]
Why Procurement Teams Source AS1163 C350 Galvanized RHS From Us
Our 3 dedicated production lines cover 2,800+ specifications from 15×20 mm to 700×800 mm with wall thickness up to 30 mm — including off-standard dimensions that most mills cannot produce. The patented sharp-corner rectangular tube technology (41 invention patents) delivers true 90° corners for architectural applications, filling a gap in both domestic and international markets. Every batch undergoes dimensional, mechanical, and chemical testing in our in-house laboratory before shipment, with full mill test certificates issued per heat number. We hold Lloyd’s CE certification for EN 10210/EN 10219, ISO 9001:2015, and Singapore FPC, ensuring customs clearance documentation for EU, North American, and regulated-market imports. Professional container loading with anti-damage measures prevents bending and surface scratching during ocean transit — critical for preserving galvanized coating integrity on long-length RHS.
Documentation & Compliance
- Mill test certificate documenting C350 chemical composition and mechanical properties per AS1163, with heat number traceability
- CE certificate (EN 10219 / EN 10210) for EU customs clearance and structural compliance
- ISO 9001:2015 quality management system certificate covering production and testing processes
- SGS or BV third-party inspection report available upon request for zinc coating thickness and dimensional verification
- Material traceability by heat number linking each bundle to production batch test results
- Full customs documentation: packing list, bill of lading, certificate of origin, and commercial invoice
Packaging, Loading & Delivery
- Galvanized rectangular tubes bundled with steel strips and edge protectors to preserve zinc coating during ocean transit
- Anti-damage loading measures including wooden cradles and separation layers prevent surface scratching on 6 m and 12 m lengths
- Container loading optimized for 5.8 m / 11.8 m lengths to maximize payload while maintaining weight distribution
- Heat number and steel grade (C350) stenciled on each bundle for site identification and traceability
- FOB / CIF / DDP shipping terms available with professional export documentation and tracking until arrival
- Custom cutting to project-specific lengths available before galvanizing to ensure full zinc coverage on cut ends
Start Your AS1163 C350 RHS Inquiry
Submit your rectangular hollow section specifications — including dimensions, wall thickness, steel grade, surface treatment, quantity, and destination port — and receive a detailed quotation with unit pricing, lead time, and shipping terms within 12 hours. Request mill test certificates and third-party inspection options upfront to confirm compliance with your project standards before placing the order.
Request AS1163 C350 Galvanized RHS Quotation
Send your specifications to admin@sdxjypipe.com or contact us via WhatsApp at +86 188 5315 7756 for pricing, certification confirmation, and delivery scheduling.
Frequently Asked Questions
Q: How does AS1163 C350 compare to ASTM A500 Gr.B and EN S355JR?
A: AS1163 C350, ASTM A500 Gr.B, and EN S355JR share similar minimum yield strength requirements, but chemical composition limits and testing procedures differ across standards. Our mill test certificates specify compliance with the governing standard for your project, and we provide grade equivalence guidance during inquiry to prevent material mismatch.
Q: Can you produce non-standard rectangular tube dimensions outside your listed range?
A: Yes. Our 3 production lines cover 2,800+ specifications including custom non-standard sizes. Submit your required outer dimensions and wall thickness, and we will confirm feasibility, tooling requirements, and MOQ for your specific profile.
Q: What galvanizing coating thickness do you provide for outdoor facade applications?
A: Hot-dip galvanized coating thickness is confirmed per your project specification and verified by third-party inspection (SGS/BV) before shipment. Our in-house laboratory tests coating thickness on every batch, and we provide mill test certificates documenting compliance with your specified standard.
Q: Do your rectangular tubes carry CE certification for EU import?
A: Yes. We hold Lloyd’s CE certification for EN 10219 (cold-formed) and EN 10210 (hot-finished) hollow sections, with full documentation provided for EU customs clearance. Singapore FPC certification is also available for regulated-market projects.
Q: How do you prevent damage to galvanized coating during container loading?
A: Galvanized rectangular tubes are bundled with edge protectors and separation layers to prevent zinc coating scratching. Long-length tubes (6 m, 12 m) are loaded with wooden cradles to maintain weight distribution and prevent bending during ocean transit.
