Description
Full-Range Structural Hollow Sections in Stock — SD XJY Pipe maintains 2,800+ specifications of ASTM A500 EN10219 seamless square rectangular hollow section supplier inventory from 19×19 mm to 800×800 mm, ready for immediate dispatch to project sites worldwide.
Technical Specifications
| Parameter | Value |
|---|---|
| Designation | ASTM A500 / EN 10219 / EN 10210 Seamless Square and Rectangular Hollow Section |
| Product Type | Seamless Square and Rectangular Hollow Section |
| Steel Grade | Gr.B, S235, S275, S355, STK400, Q195–Q690 |
| Standard | ASTM A500, ASTM A53, EN 10219, EN 10210, NZS 1163, GB/T 3091, JIS G3466 |
| Section Shape | Square / Rectangular |
| Size Range | 19 mm × 19 mm – 800 mm × 800 mm |
| Wall Thickness | 1 – 30 mm |
| Length | 5.8 m / 6 m / 11.8 m / 12 m / Random Length |
| Technique | Seamless / Welded (ERW) |
| Surface Treatment | Black Painting / Galvanized / Varnish / Bare |
| Tolerance | ±1% |
| Ends | Plain / Beveled |
| Application | Steel structures, Construction frames, Curtain wall framing, Support tubes, Building structures, Machinery |
| MOQ | 5 Tons |
| Origin | Shandong, China |
Application Suitability
| Industry | Typical Applications |
|---|---|
| Construction & EPC | Column and beam frames for high-rise buildings, industrial warehouse structures, bridge support members |
| Architectural Facade | Glass curtain wall sub-framing, exposed structural grids, decorative facade mullions using sharp-corner profiles |
| Machinery Manufacturing | Conveyor support frames, crane boom sections, hydraulic equipment bases |
| Infrastructure | Sound barrier posts, lighting pole foundations, solar mounting structures |
What Wall-Thickness Tolerance Costs on a Structural Frame Order
A ±1% tolerance on a 30 mm wall section is the difference between passing third-party inspection and scrapping an entire container at the port.
When buyers source ASTM A500 EN10219 seamless square rectangular hollow section supplier products from multiple vendors, wall thickness inconsistency becomes a silent budget killer. A 0.5 mm negative deviation on a heavy-wall column may pass visual inspection but fail ultrasonic testing at destination — triggering re-order, air-freight supplements, and weeks of schedule delay. [NEED_CITE: EN 10219 dimensional tolerance requirements for cold-formed hollow sections]
Beyond tolerance, steel grade mislabeling creates compounding risk. A batch marked S355 that actually delivers S275 chemistry will carry lower yield capacity — acceptable for non-critical bracing, dangerous for primary load-bearing frames. Our in-house physical and chemical laboratory tests every heat before release, eliminating the guesswork that costs projects their timelines.
Matching Hollow Section Profiles to Structural Load Paths
Engineers specifying ASTM A500 EN10219 seamless square rectangular hollow section supplier products need sections that perform predictably under combined axial and bending loads. Our 800×800 mm maximum size with 30 mm wall covers heavy column applications, while 19×19 mm profiles serve light-duty curtain wall sub-framing. The ±1% tolerance ensures consistent section modulus across every piece — critical when structural calculations depend on precise moment of inertia values. For projects spanning multiple climate zones, we supply galvanized, black painted, or bare finishes matched to corrosion exposure categories.
Engineering Compliance Across International Standards
Structural hollow sections must satisfy the governing building code at the project location. EN 10219 governs cold-formed welded structural hollow sections in Europe, while ASTM A500 Gr.B/C/D applies across North America. JIS G3466 STK400 serves Japanese-specification projects, and NZS 1163 applies to Australasian structural work. [NEED_CITE: steel grade equivalence between EN S355 and ASTM A500 Gr.C standards] CE certification under EN 10210/10219 is mandatory for EU customs clearance — missing this document blocks container release at Rotterdam or Hamburg. Our Lloyd’s CE certification and Singapore FPC approval cover these regulated markets, with mill test certificates formatted to EN 10204 3.1 requirements.
Decoding Steel Grades and Manufacturing Processes
The jump from S235 to S355 represents a 50% increase in minimum yield strength — directly reducing section weight needed for the same load capacity. Q-series grades (Q195–Q690) follow the Chinese GB system where the number indicates yield strength in MPa, while ASTM A500 Gr.B/C/D use tensile strength ranges. Seamless manufacturing eliminates the weld seam entirely, making these sections suitable for higher-pressure applications and environments where weld integrity is critical. ERW welded sections offer cost advantages for standard structural use where the longitudinal weld meets full ultrasonic examination requirements. [NEED_CITE: seamless versus ERW hollow section manufacturing differences]
Sharp-corner rectangular tubes — our patented technology covering 41 invention patents — deliver true 90-degree internal corners instead of the rounded radii typical of standard cold-formed sections. This geometry provides flush contact surfaces for concealed connections and cleaner sight-lines in exposed architectural applications.
Hidden Costs of Incorrect Hollow Section Procurement
Ordering ASTM A500 EN10219 seamless square rectangular hollow section supplier products without verified certification creates downstream liabilities that dwarf the initial price saving. Material arriving without proper CE marking faces customs rejection in EU member states — storage demurrage, re-export costs, and project delays follow. Negative tolerance exceeding the declared ±1% reduces actual section modulus, potentially requiring structural redesign or supplementary reinforcement after installation. Third-party inspection failure at destination port means the buyer bears return freight and replacement lead time — often 60+ days from the original order date. [NEED_CITE: consequences of non-compliant structural steel imports in EU markets]
Why Project Teams Source Hollow Sections from SD XJY Pipe
Our Jinan facility operates three dedicated production lines covering 2,800+ specifications — from 19×19 mm light profiles to 800×800×30 mm heavy structural sections — eliminating the need to split orders across multiple suppliers. Every shipment includes mill test certificates generated by our in-house laboratory after chemical composition and mechanical property verification, not copied from generic templates. The patented sharp-corner rectangular tube technology fills a specification gap that standard mills cannot address, providing architects with true right-angle profiles for curtain wall and facade systems. Full international certification portfolio — ISO 9001:2015, Lloyd’s CE (EN 10210/10219), Singapore FPC, SGS/BV verification — supports customs clearance across 50+ destination countries. Custom non-standard sizes and random lengths accommodate project-specific requirements without forcing minimum order quantities that strain site storage. Professional container loading with anti-damage measures prevents the bending and surface scoring that triggers rejection at destination.
Documentation & Compliance
- Mill test certificate documenting S355JR chemical composition and yield strength per EN 10219, issued per heat number
- CE certificate of conformity covering EN 10210 and EN 10219 hollow sections for EU market customs clearance
- ISO 9001:2015 quality management system certificate covering production and testing processes
- SGS or BV third-party inspection report verifying dimensional accuracy and surface quality before shipment
- Material traceability documentation linking each piece to heat number, production date, and test results
- Export customs documents including packing list, bill of lading, and certificate of origin
Packaging, Loading & Delivery
- Seamless and ERW welded hollow sections bundled with steel strips at intervals matched to 6 m and 12 m standard lengths, preventing bundle deformation during ocean transit
- Galvanized surfaces protected with edge guards and separation layers to preserve zinc coating integrity through container loading and discharge
- Heavy-wall sections (20–30 mm) loaded with timber cradles and dunnage to distribute weight and prevent contact damage to adjacent pieces
- Random length and custom-cut sections marked with heat number, steel grade, and dimensional identification on each piece for site traceability
- Container loading plans optimized for 20ft and 40ft equipment, maximizing payload while maintaining weight distribution for port handling equipment
- FOB, CIF, and DDP shipping terms available with full tracking documentation from Jinan inland depot to destination port
Initiating Your Hollow Section Procurement
Submit your specification sheet detailing section dimensions, wall thickness, steel grade, surface treatment preference, quantity, and destination port — our technical team responds within 12 hours with pricing, certification confirmation, and production timeline. For non-standard sizes outside the 19×19 to 800×800 mm range, we provide custom manufacturing feasibility assessment and lead time confirmation. Third-party inspection by SGS or BV can be arranged at our facility before container sealing, giving you independent quality verification.
Request Specification Review and Pricing
Share your ASTM A500 EN10219 seamless square rectangular hollow section supplier requirements with our technical team to receive detailed quotation, mill test certificate samples, and certification documentation for your project compliance review.
Contact: +86 188 5315 7756 (WhatsApp/WeChat) | admin@sdxjypipe.com | www.sdxjypipe.com
