Description
Factory-direct H beam supply — Raw steel from our own mill to finished Q345B and S355JR sections under one quality system.
Technical Specifications
| Parameter | Value |
|---|---|
| Designation | Q345B/S355JR/S355J2 Hot Rolled H Beam |
| Product Type | H-beam |
| Steel Grade | Q345B, S355JR, S355J2, Q235, ASTM A36, SS400, S235JR |
| Standard | BS, EN, GB, AISI, ASTM, DIN, JIS |
| Section Shape | H-Beam (I-Beam) |
| Size Range | 100×100 to 1000×300 |
| Web Width | 100mm – 900mm |
| Flange Thickness | 8mm – 64mm |
| Web Thickness | 4.5mm – 36.5mm |
| Length | As per customer request |
| Technique | Hot Rolled |
| Surface Treatment | Customized (Painted/Galvanized available) |
| Tolerance | ±1% |
| Processing Services | Bending, Welding, Decoiling, Punching, Cutting |
| Packing | Seaworthy |
| Application | Steel Building, Steel Beam Structural, Construction frames, Industrial platforms, Building frames |
| Origin | Shandong, China |
Application Suitability
| Industry | Typical Applications |
|---|---|
| Commercial Construction | Building frames for warehouses, logistics centers, and multi-story office structures |
| Industrial Facilities | Heavy-duty platforms, mezzanine floors, and crane runway beams |
| Infrastructure | Bridge approach structures, conveyor support frames, and pipe rack systems |
| EPC Projects | Structural steel packages for power plants, refineries, and processing facilities |
| Steel Fabrication Subcontracting | Primary columns, rafters, and truss chords for fabricators needing overflow capacity |
Where Material Traceability Gaps Cost You a Shipment
A mill certificate that looks perfect on paper means nothing if the heat number does not match the steel on the dock.
Buyers sourcing hot rolled H beams from overseas fabricators routinely face a disconnect between the mill test certificate provided at quotation stage and the actual material delivered to site. When a third-party inspector pulls samples at the discharge port and the impact energy values do not align with the stated grade, the entire container sits in customs limbo. I have watched S355J2 material with textbook-perfect paperwork fail low-temperature Charpy testing because the fabricator sourced from a trader who mixed heats without traceability documentation. [NEED_CITE: material traceability requirements for structural steel in EN 1090-2] A Q345B S355JR hot rolled H beam supplier who controls the entire chain from raw slab to finished section eliminates this gap—one heat number, one quality record, one point of accountability.
How Multi-Grade Coverage Matches Structural Load Paths
Not every connection point in a steel frame carries the same demand. A Q345B S355JR hot rolled H beam supplier stocking grades from Q235 through S355J2 lets engineers specify higher strength where moment demands peak and economical grades where they do not. For a typical industrial warehouse, S235JR may suffice for secondary purlins while S355J2 handles the main portal frame rafters subject to dynamic crane loads. Our own rolling mill produces the full range in web widths from 100mm to 900mm and flange thicknesses up to 64mm, so your structural engineer can optimize section selection without waiting for multiple suppliers to deliver partial orders.
Engineering Code Compliance and Surface Protection Selection
Structural H beams for European projects must comply with EN 1090 execution classes, which dictate welding procedure qualification, dimensional tolerances, and mandatory CE marking. [NEED_CITE: EN 1090 structural steel fabrication execution class requirements] For Middle East and Southeast Asian projects exposed to high humidity or marine atmospheres, specifying hot-dip galvanized or multi-coat painted surface treatment at the fabrication stage prevents field corrosion claims. Our CNC cutting, submerged arc welding, and shot blasting lines process Q345B S355JR hot rolled H beam sections to engineering drawings with full WPS and PQR documentation, so your site team receives components ready for erection without secondary rework.
Decoding the Grade Designations You Are Ordering
The steel grade you specify determines more than just yield strength—it defines the entire testing regime your material must pass. Q345B (GB standard) and S355JR (EN standard) share similar yield characteristics but differ in impact testing requirements: the JR designation requires room-temperature Charpy testing while J2 mandates testing at minus 20 degrees Celsius, critical for cold-climate structures. ASTM A36 and SS400 represent older specifications still common in North American and Japanese-origin projects respectively. Hot rolled production produces a mill scale surface that accepts primer coatings well, while tighter dimensional tolerances of ±1% ensure bolt-hole alignment matches your connection detailing without field reaming.
The Hidden Price of Accepting the Wrong Certificate
When a fabricator delivers H beams with a mill test certificate from a different heat than the physical material, the consequences cascade. Third-party inspectors at the discharge port will reject the shipment, triggering demurrage charges, re-export costs, and project delays measured in weeks rather than days. [NEED_CITE: structural steel material traceability and certification requirements] Beyond customs rejection, undetected grade mismatches create latent structural risks—a beam specified for S355J2 seismic performance but delivered as Q235 will not perform as designed under lateral loads. Engineering codes require documented traceability from heat to final installation, and no amount of field welding can compensate for missing chemistry records.
Why Integrated Mill-to-Fabrication Supply Reduces Your Risk
Controlling raw material production and fabrication under one roof means every heat number on your mill test certificate corresponds to steel we rolled, tested, and certified ourselves. Our in-house metallurgical laboratory verifies chemical composition and mechanical properties before any section leaves the mill, eliminating the common practice of fabricators purchasing material from traders with unverified paperwork. With over 2,800 raw material specifications in our inventory system, we maintain stock of standard H beam sections while producing custom lengths and sizes to your cutting list. CE certification to EN 1090, AWS-qualified welding procedures, and complete quality documentation packages—including weld maps, dimensional inspection reports, and coating thickness records—travel with every shipment to EU, Middle East, Southeast Asian, and African project sites.
Documentation & Compliance
- Mill test certificate documenting Q345B and S355JR chemical composition and mechanical properties per GB/T 1591 and EN 10025 respectively, with heat-level traceability
- CE certificate confirming EN 1090-2 Factory Production Control compliance for structural steel components exported to European Union member states
- ISO 9001 quality management system certificate covering the integrated steel production and fabrication process
- SGS or BV third-party inspection reports available for pre-shipment verification of dimensions, surface treatment, and marking
- Material traceability records linking each delivered H beam section to its original heat number and rolling schedule
- Complete export documentation including commercial invoice, packing list, bill of lading, and certificate of origin for customs clearance
Packaging, Loading & Delivery
- Q345B and S355JR hot rolled H beams bundled with high-tensile steel strips at intervals preventing bundle separation during ocean transit
- Shot blasted and painted sections wrapped in waterproof paper with edge protectors to preserve surface coating integrity
- Container loading plans optimized for H beam sections up to 12 meters, maximizing payload while respecting port weight restrictions
- Custom cut-to-length service available, with each piece marked by heat number, steel grade, and piece mark matching your erection drawings
- Seaworthy packaging with desiccant packets for galvanized or painted H beams destined for tropical or high-humidity discharge ports
- FOB, CIF, and DDP shipping terms available with door-to-door logistics coordination for project sites inland from discharge ports
Starting Your Structural Steel Procurement
Submit your project drawings, steel grade specifications, and required quantities to receive a detailed quotation including material, fabrication, surface treatment, and shipping costs within 24 hours. Our engineering team will review your shop drawings, confirm material availability, and provide a production schedule before contract execution. Request sample mill test certificates and third-party inspection procedures to verify our documentation standards match your project requirements.
Get Your Q345B S355JR Hot Rolled H Beam Quotation
Send your specifications and engineering drawings to receive pricing, material certification samples, and production timelines.
Contact: admin@xjystructure.com | WhatsApp: +86 188 5315 7756
