Description
Factory-Direct SHS Supply — S235JRH and S355JRH square hollow sections produced in-house with 41 patented technologies, shipped directly from our Jinan facility to over 50 countries without intermediary markups.
Technical Specifications
| Parameter | Value |
|---|---|
| Designation | S235JRH/S355JRH SHS Hollow Section Square Pipe |
| Product Type | Square Steel Tube / SHS Hollow Section |
| Steel Grade | S235JRH, S355JRH, Q235B, ASTM A500, ASTM A53 Gr.B, S275, STK400 |
| Standard | ASTM A500, ASTM A53, EN 10219, EN 10210, GB/T 3091, JIS G3466 |
| Section Shape | Square |
| Size Range | 19mm × 19mm – 800mm × 800mm |
| Wall Thickness | 1 – 30 mm |
| Length | 5.8m / 6m / 11.8m / 12m / Random Length / SRL / DRL |
| Technique | Welded / Seamless |
| Surface Treatment | Black Painting / Galvanized / Varnish / Bare / Oiled |
| Tolerance | ±1% |
| Ends | Plain |
| Processing Service | Bending, Welding, Cutting |
| Application | Steel Structures, Construction Frames, Building Structures, Curtain Walls, Support Tubes, Machinery, Scaffolding |
| MOQ | 5 Tons |
| Origin | Shandong, China |
Application Suitability
| Industry | Typical Applications |
|---|---|
| EPC Contractors & Construction | Structural frames for high-rise buildings, curtain wall support systems, bridge infrastructure columns |
| Steel Distributors | Regional inventory stock of S355JRH SHS square hollow section steel tube for project-based resale across EU and Southeast Asian markets |
| Machinery Manufacturers | Equipment base frames, conveyor support structures, hydraulic press columns |
| Infrastructure Developers | Scaffolding uprights, temporary support towers, solar farm mounting structures |
Where EN 10219 Certification Decides Customs Clearance for Your S355JRH SHS Square Hollow Section Steel Tube
Missing CE documentation under EN 10219 is the single most common reason structural steel shipments get held at EU ports.
I have seen entire container loads of square hollow sections sit in Rotterdam for weeks because the mill test certificates did not reference the correct European standard. Buyers assumed their supplier’s domestic test reports would suffice. They did not. The S355JRH grade must be documented against EN 10210 or EN 10219 with full chemical composition and mechanical property data, or customs will flag the shipment for re-inspection at the importer’s expense. [NEED_CITE: EN 10219 cold-formed hollow section compliance requirements for EU market entry]
Matching S355JRH SHS Square Hollow Section Steel Tube to Structural Load Requirements
When specifying square hollow sections for load-bearing frames, the S355JRH grade delivers higher yield capacity than S235JRH, allowing engineers to reduce section size while maintaining structural integrity. Our production covers side lengths from 19mm × 19mm up to 800mm × 800mm with wall thickness reaching 30mm, which means a single order can supply both lightweight bracing members and heavy primary columns. The ±1% dimensional tolerance ensures consistent fit-up during on-site welding, reducing rework caused by out-of-spec sections. For projects spanning multiple building zones, we consolidate mixed-size shipments into optimized container loads, cutting freight cost per ton.
Engineering Compliance and Surface Protection for Long-Term Performance
Structural steel used in outdoor or high-humidity environments requires surface treatment selection aligned with the corrosion exposure class defined in EN ISO 12944. Hot-dip galvanized S355JRH SHS square hollow section steel tube provides sacrificial zinc protection suitable for C3 to C4 environments, while black painting with primer serves indoor or temporary applications. For projects governed by Eurocode 3 or AISC 360, the steel grade must be traceable to its heat number, and the mill test certificate must confirm conformity to the declared standard. [NEED_CITE: steel grade equivalence mapping between EN 10219 S355JRH and ASTM A500 Grade C] Custom cut-to-length service eliminates secondary cutting at the job site, preserving the protective coating at cut edges when factory-sealed with cold galvanizing spray.
Understanding Steel Grade Selection and Manufacturing Process for SHS
The S-series designation under EN standards indicates minimum yield strength in MPa — S235JRH yields at approximately 235 MPa, while S355JRH reaches approximately 355 MPa, making the latter the preferred choice for primary structural members in multi-story frames. The Q235B grade under Chinese GB standards offers comparable performance to S235JRH for general construction, while ASTM A500 Grade B and Grade C serve the North American market with slightly different chemical composition limits. [NEED_CITE: structural steel grade comparison between EN 10219, ASTM A500, and GB/T 3091 standards]
Welded SHS produced through the ERW process offers cost efficiency for standard structural applications, while seamless square hollow sections serve higher-pressure or critical-load scenarios where weld line integrity is a concern. Surface treatment choice directly affects lifecycle cost — galvanized coatings eliminate repainting cycles for 20 to 30 years in moderate environments, while bare or oiled finishes require immediate priming upon delivery to prevent white rust formation during storage.
The Hidden Cost of Procuring S355JRH SHS Square Hollow Section Steel Tube Without Verified Certification
Ordering square hollow sections at the lowest unit price often shifts cost downstream. Sections that fail to meet the declared wall thickness tolerance trigger rejection during third-party inspection, forcing the buyer to source replacement material at spot-market premiums while the original shipment sits in a warehouse. Missing or incorrectly formatted mill test certificates delay customs clearance and push back project timelines by weeks. [NEED_CITE: consequences of non-compliant structural steel documentation in international construction projects] Material traceability gaps — where heat numbers on the pipe do not match the certificate — create liability exposure if structural failure occurs during the building’s service life.
Procurement Confidence Through Direct Factory Capability
Our facility operates three dedicated production lines covering over 2,800 specifications of square and rectangular hollow sections, with wall thickness capability up to 40mm. The in-house physical and chemical laboratory performs incoming raw material analysis, in-process dimensional checks, and final mechanical testing before any S355JRH SHS square hollow section steel tube leaves the mill. We hold CE certification under EN 10210 and EN 10219, ISO 9001:2015 registration, and verification by SGS and BV — documentation that clears customs across EU, North American, and Middle Eastern ports without supplementary inspection. Our proprietary sharp-corner rectangular tube technology, covered by 41 patents, fills specification gaps that standard catalogs cannot address, allowing engineers to specify tighter corner radii for improved connection fit-up. Professional loading plans maximize container utilization for mixed-size orders, and our logistics team coordinates FOB, CIF, and DDP shipments with real-time tracking to over 50 countries.
Documentation & Compliance
- Mill test certificate documenting S235JRH and S355JRH chemical composition, yield strength, and tensile properties per EN 10219 or EN 10210
- CE certificate confirming conformity to EN 10210 for hot-formed and EN 10219 for cold-formed hollow structural sections
- ISO 9001:2015 quality management system certificate covering the full production and inspection workflow
- SGS or BV third-party inspection report available upon request, verifying dimensional accuracy and surface condition before container sealing
- Full material traceability linking each S355JRH SHS square hollow section steel tube to its heat number and production batch
- Complete customs documentation package including packing list, bill of lading, and certificate of origin for the destination country
Packaging, Loading & Delivery
- S355JRH SHS square hollow section steel tube bundled with steel strips and edge protectors to preserve corner geometry during ocean transit
- Galvanized finishes wrapped in waterproof paper with desiccant packs to prevent white rust formation in humid container environments
- Mixed-size container loading plans optimized for 20ft and 40ft containers, balancing weight distribution and maximizing payload for orders combining 19mm to 800mm sections
- Cut-to-length service available for 5.8m, 6m, 11.8m, and 12m DRL requirements, with cut ends sealed to prevent corrosion initiation
- Heat number and steel grade stenciled on each bundle for on-site identification and inspection traceability
- FOB, CIF, and DDP shipping terms available with door-to-door coordination to project sites across EU, Southeast Asia, Middle East, and North America
Requesting a Quotation for S355JRH SHS Square Hollow Section Steel Tube
Submit your required side dimensions, wall thickness, steel grade, total tonnage, and destination port to receive a detailed quotation including unit pricing, production lead time, and applicable certification scope. For non-standard dimensions outside the 2,800+ specification catalog, our engineering team provides custom feasibility assessment and tooling lead time confirmation. All quotations include mill test certificate scope and third-party inspection availability so you can verify compliance requirements before placing the order.
Frequently Asked Questions
Q: How do S355JRH, ASTM A500 Grade C, and Q345B compare for structural applications?
A: These three grades occupy similar yield strength ranges and are commonly specified as equivalents in international projects. S355JRH follows EN 10219 for cold-formed hollow sections, ASTM A500 Grade C serves the North American structural market, and Q345B is the Chinese GB standard equivalent. Our facility produces all three grades and can supply cross-reference documentation confirming chemical and mechanical property alignment for your project specification.
Q: Can you arrange SGS or BV third-party inspection before shipment?
A: Yes. We coordinate third-party inspection at our facility or at the loading port. The inspection covers dimensional verification, surface condition assessment, wall thickness measurement, and visual weld quality for welded sections. The inspection report is issued independently by SGS or BV and accompanies the shipment documentation.
Q: What is the minimum order quantity for custom non-standard SHS dimensions?
A: Our standard catalog covers over 2,800 specifications from 19mm × 19mm to 800mm × 800mm. For dimensions outside this range, custom production is available with MOQ depending on the specific profile and tooling requirements. Submit your drawing or dimension sheet for a feasibility and quantity assessment.
Q: Which surface treatment is suitable for outdoor structural applications in coastal environments?
A: Hot-dip galvanized S355JRH SHS square hollow section steel tube provides the most durable protection for C4 and C5 corrosion environments, including coastal and industrial atmospheres. The zinc coating acts as a sacrificial barrier, eliminating the need for repainting during the structure’s service life. For less aggressive environments, black painting with appropriate primer systems offers a cost-effective alternative.
Q: Do you provide professional container loading plans for mixed-size orders?
A: Yes. Our logistics team prepares detailed loading plans for every shipment, optimizing container space utilization while ensuring weight distribution meets transport safety requirements. The loading plan accounts for section size, wall thickness, bundle weight, and destination port handling equipment. Real-time tracking is available from loading through delivery.
Start Your S355JRH SHS Square Hollow Section Steel Tube Procurement Today
Send your specifications, steel grade, quantity, and destination port to receive a quotation with mill test certificate confirmation within 12 hours.
Shandong Xin Jiyuan Special Steel Tube Co., Ltd
Website: www.sdxjysteel.com
Email: admin@sdxjysteel.com
Tel: +86 531 8573 6315
Mobile/WhatsApp/WeChat: +86 188 5315 7756
