Description
Factory-Direct S355JRH Rectangular Steel Tube Supply — Every S355JRH rectangular steel tube we ship carries an original mill test certificate traceable to heat number, with wall thickness held within ±1% tolerance verified by our in-house laboratory before loading.
Technical Specifications
| Parameter | Value |
|---|---|
| Designation | S355JRH Rectangular Steel Tube |
| Product Type | Square and Rectangular Steel Tube / Hollow Section (SHS/RHS) |
| Steel Grade | S355JRH, S355J0H, S355J2H, S355K2H, S355NH, S460, S690 |
| Standard | EN10210, EN10219, ASTM A500, ASTM A501, JIS G3444, JIS G3466 |
| Section Shape | Rectangular / Square |
| Technique | Seamless Manufacturing Process / ERW High-Frequency Welding / LSAW Double-Submerged Arc Welding |
| Surface Treatment | Hot Rolled |
| Tolerance | ±1% |
| Wall Thickness | Thick Wall Pipe |
| Surface | Smooth |
| Processing Service | Welding, Punching, Cutting, Bending, Decoiling |
| Delivery Time | 15-21 days |
| Invoicing | By Theoretical Weight |
| Packing | Standard Seaworthy Packing |
| Payment Terms | L/C, T/T (30% Deposit) |
| Inspection | Self-Inspection, Third Party Inspection Accepted |
| Certificate | CE, ISO 9001 |
| MOQ | 10 Tons |
| Origin | Shandong, China |
Application Suitability
| Industry | Typical Applications |
|---|---|
| Steel Structure Fabrication | Building frames, column-beam assemblies, truss systems for high-rise and industrial facilities |
| Bridge & Highway Construction | Load-bearing support structures, guardrail posts, sign gantry frames |
| Port & Marine Infrastructure | Crane runway beams, wharf support frames, container terminal structures |
| Stadium & Large-Span Construction | Roof truss members, seating tier support frames, facade skeleton systems |
| Prefabricated & Modular Building | Modular unit frames, prefabricated wall panels, industrial framing systems |
| Glass Curtain Wall & Facade | Rectangular hollow section framing for curtain wall mullions and transoms |
What Wall-Thickness Tolerance Costs on a Structural Frame Order
A ±1% tolerance on S355JRH rectangular steel tube means the difference between passing structural inspection and scrapping an entire batch at the fabrication yard.
I learned this the hard way years ago when a shipment of EN standard seamless square tubes arrived at a Dubai port only to fail third-party re-inspection — wall thickness negative tolerance exceeded 15%, and the entire lot was rejected. Since then, I check wall thickness against MTC data more carefully than I check price. On any S355JRH rectangular steel tube order, our in-house lab verifies dimensional accuracy before release, and every piece ships with an original mill test certificate showing heat number, chemical composition, and mechanical properties. Structural engineers designing to EN 1993 or AISC specifications rely on published section properties — when actual wall thickness deviates beyond tolerance, moment of inertia and load capacity drop, and the entire frame design assumption collapses [NEED_CITE: EN 10219 cold-formed structural hollow section dimensional tolerance requirements].
How S355JRH Rectangular Steel Tube Matches Heavy Structural Demands
S355JRH rectangular steel tube in thick-wall configuration serves as primary load-bearing members in bridge supports, port crane structures, and stadium roof frames where section modulus and torsional rigidity matter more than weight savings. The rectangular profile provides higher moment of inertia along the strong axis compared to circular sections of equivalent weight, making it the preferred choice for beam and column applications in steel frame structures. Our ERW and seamless manufacturing lines produce these sections with consistent corner radii and smooth surfaces that accept welding connections without secondary grinding, while the hot-rolled surface condition provides adequate corrosion resistance for indoor and sheltered outdoor structural applications.
Engineering Compliance and Certification Requirements
Structural hollow sections used in load-bearing frames must conform to dimensional and mechanical standards recognized by the project’s governing code — EN10210 for hot-finished or EN10219 for cold-formed in European markets, ASTM A500 Grade B or C in North America, and JIS G3466 in Japan and Southeast Asia. Our S355JRH rectangular steel tube production covers all three standard systems with documented grade equivalence, so a project specifying S355JRH per EN10219 can receive material certified to that standard while our documentation cross-references ASTM A500 Grade C properties for dual-market compliance [NEED_CITE: steel grade equivalence mapping between EN 10210 and ASTM A500]. CE certification under EN10210/EN10219 is mandatory for structural steel entering the European Economic Area, and our factory holds both CE marking and ISO 9001:2015 certification to satisfy customs and quality audit requirements. For projects requiring independent verification, we accept SGS or BV third-party inspection with full dimensional reports and mechanical test witness.
Steel Grade Selection and Manufacturing Process Explained
The S355JRH grade designation indicates a minimum yield strength of 355 MPa with impact toughness tested at room temperature (JRH = impact tested at 20°C), while S355J0H and S355J2H extend impact testing to 0°C and -20°C respectively — critical for cold-climate bridge and offshore structures where brittle fracture risk increases. Moving up the range, S460 and S690 high-strength low-alloy grades allow section size reduction while maintaining load capacity, though they require pre-heat treatment and controlled welding procedures. Our manufacturing options include ERW high-frequency welding for standard wall thicknesses, LSAW double-submerged arc welding for extra-thick wall rectangular sections where forming forces exceed ERW capability, and seamless manufacturing for applications requiring uniform wall distribution without weld seam concerns. The hot-rolled surface finish provides a mill scale layer that offers short-term corrosion protection during storage and fabrication, with final surface treatment determined by the project’s environmental exposure classification.
Hidden Costs of Procuring Non-Compliant Hollow Sections
Purchasing S355JRH rectangular steel tube without verified mill test certificates or accepting undocumented negative tolerance invoicing creates costs that surface long after the invoice is paid. Material that fails to meet EN10219 dimensional tolerance gets rejected during structural steel fabrication when weld fit-up gaps exceed code limits, forcing re-cutting or outright scrap. Missing heat number traceability means the entire batch cannot be verified against the original melt chemistry, and customs authorities in the EU and GCC countries increasingly detain structural steel shipments lacking proper CE documentation or third-party inspection reports [NEED_CITE: structural steel customs clearance requirements in European and Middle Eastern markets]. The real cost is not the price premium on certified material — it is the project delay, re-fabrication labor, and potential structural safety liability when unverified sections are installed and later found deficient.
Why Structural Steel Buyers Source S355JRH Rectangular Steel Tube From Us
Our factory operates dedicated ERW and seamless tube mills with in-house理化实验室 that tests every heat for chemical composition and mechanical properties before the material leaves the production line — no external lab delays, no certificate trading. We stock S355JRH, S355J0H, S355J2H, and high-strength S460/S690 grades in thick-wall rectangular sections, so projects requiring mixed-grade orders for different structural members can consolidate procurement through a single purchase order rather than splitting across multiple suppliers. Custom processing — precision cutting to length, punching for bolt connections, bending for curved frame members — happens in our fabrication shop before shipping, eliminating secondary processing costs at the job site. Every S355JRH rectangular steel tube ships with original MTC traceable to heat number, CE certificate for European customs, and we coordinate professional heavy-cargo loading with flatbed or open-top container arrangements to prevent transit damage on thick-wall sections.
Documentation & Compliance
- Mill test certificate documenting S355JRH chemical composition (C, Mn, Si, P, S) and yield strength per EN10219, with heat number traceable to original melt
- CE certificate confirming EN10210/EN10219 compliance for structural hollow sections entering European Economic Area markets
- ISO 9001:2015 quality management system certificate covering full production and inspection process
- SGS or BV third-party inspection report available upon request, covering dimensional verification, surface quality, and mechanical test witness
- Material traceability documentation linking each piece to heat number, production date, and test batch for project quality audit
- Export customs documents including packing list, bill of lading, and certificate of origin for destination-country clearance
Packaging, Loading & Delivery
- Thick-wall S355JRH rectangular steel tubes bundled with high-tensile steel strips at intervals matching section length, with edge protectors preventing corner damage during handling
- Hot-rolled surface preserved with anti-rust oil coating on request for ocean transit exceeding 30 days, preventing mill scale flaking and surface pitting
- Container loading optimized for heavy rectangular sections using open-top or flat-rack configuration when section weight exceeds standard dry container payload limits
- Custom cut-to-length service available before packing, with each piece marked with heat number, steel grade, and dimensional identification for site sorting
- Professional heavy-cargo logistics coordination including FOB, CIF, and DDP terms, with door-to-door delivery to project site or fabrication yard
Ready to Procure S355JRH Rectangular Steel Tube?
Submit your specification sheet — steel grade, section dimensions, wall thickness, length, quantity, and destination port — and receive a detailed quotation with material cost, processing fees, and shipping terms within 12 hours. We provide original mill test certificate preview before shipment confirmation, and coordinate third-party inspection scheduling if your project requires independent verification.
Request S355JRH Rectangular Steel Tube Quotation with Mill Test Certificate
Send your inquiry with section specifications and project requirements to receive pricing, MTC preview, and delivery schedule.
- Company: Shandong Xin Jiyuan Special Steel Tube Co., Ltd
- Website: www.xjyplate.com
- Tel: +86 531 8573 6315
- Mobile/WhatsApp/WeChat: +86 188 5315 7756
- Email: admin@xjyplate.com
- Address: No.11889, Jingshi West Road, Lulian Group, Jinan City, Shandong Province, China
Frequently Asked Questions
Q: How do S355JRH, S355J0H, and S355J2H differ in impact testing requirements?
A: The suffix indicates the Charpy impact test temperature — JRH means impact tested at 20°C, J0H at 0°C, and J2H at -20°C. All three share the same minimum yield strength of 355 MPa, but J2H is specified for cold-climate structures where low-temperature toughness prevents brittle fracture.
Q: Can you provide original mill test certificates with heat number traceability?
A: Yes, every S355JRH rectangular steel tube ships with an original MTC showing chemical composition, mechanical properties, and heat number traceable to the original melt. We also accept SGS or BV third-party inspection for independent verification.
Q: What is the minimum order quantity for non-standard rectangular section dimensions?
A: Our standard MOQ is 10 tons. For non-standard dimensions outside our regular stock range, minimum order depends on section size and wall thickness — we can confirm exact MOQ and production lead time after receiving your specification.
Q: How do you handle invoicing — by theoretical weight or actual weight?
A: We invoice by theoretical weight based on published section dimensions and standard steel density, with wall thickness held within ±1% tolerance. This eliminates disputes over weight variation and provides predictable cost calculation for project budgeting.
Q: Do you offer custom cutting and processing before shipment?
A: Yes, our fabrication shop provides precision cutting to length, punching for bolt connections, and bending services. Processing is completed before packing and shipping, with each piece marked for identification at the project site.
Get Your S355JRH Rectangular Steel Tube Quote Today
Send section dimensions, steel grade, quantity, and destination to receive pricing with mill test certificate preview and delivery schedule.
- Company: Shandong Xin Jiyuan Special Steel Tube Co., Ltd
- Website: www.xjyplate.com
- Tel: +86 531 8573 6315
- Mobile/WhatsApp/WeChat: +86 188 5315 7756
- Email: admin@xjyplate.com
