Description
Factory-Direct Weathering Steel — Every Q355NH plate rolls off our Jinan mill with original heat-number traceability and SGS-ready certification.
Technical Specifications
| Parameter | Value |
|---|---|
| Designation | 1020 Width Weather Resistant Steel Plate |
| Product Type | Steel Plate |
| Steel Grade | Q355NH / Corten A / ASTM A588 |
| Technique | Hot Rolled |
| Surface Treatment | Hot Rolled |
| Width | 1020 mm |
| Tolerance | ±1% |
| Application | Construction / Petrochemicals / Machinery |
| Origin | Shandong, China |
Application Suitability
| Industry | Typical Applications |
|---|---|
| Construction | Bridge fascias, exposed structural facades, coastal building cladding |
| Petrochemicals | Pipe rack supports, outdoor platform grating, flare stack bases |
| Machinery | Crane boom side plates, excavator counterweight housings, conveyor frames |
What ±1% Width Tolerance Means When Plates Meet on Site
Tight width control eliminates field-cutting delays and weld-gap inconsistencies.
When 1020mm width weather resistant steel plate arrives at a bridge deck or petrochemical rack, even a few millimeters of deviation compound across dozens of joints. I have seen entire erection schedules slip because plates arrived outside acceptable gap tolerances, forcing crews to re-cut on site. Hot rolling at controlled temperatures keeps the microstructure uniform while holding width within ±1%, so bolt holes align and weld prep stays consistent. [NEED_CITE: hot rolled steel plate dimensional tolerance standards]
Matching Atmospheric Corrosion Resistance to Project Exposure
Weather resistant steel plate in 1020mm width develops a stable protective patina when exposed to wet-dry cycles, making it suitable for structures where painting is impractical or cost-prohibitive. The 1020mm width reduces the number of longitudinal welds on large facades and pipe racks, cutting both labor hours and potential corrosion initiation points. We supply Q355NH and equivalent grades for projects across Southeast Asia and the Middle East, where humidity and salt-laden air demand proven atmospheric corrosion performance.
Structural Compliance and Certification Pathways
Engineering specifications for weathering steel typically reference EN 10025-5 or ASTM A588/A242, and project owners in the EU require CE marking with Factory Production Control documentation. Our production carries ISO 9001:2015 certification and Lloyd’s CE (EN 10210/10219) FPC, ensuring that every heat number traces back to the original ladle analysis. For North American projects, we provide mill test certificates confirming compliance with ASTM A588 Grade 50 chemistry and mechanical requirements. [NEED_CITE: EN 10025-5 weathering steel structural design requirements]
Hot Rolling Process and Atmospheric Corrosion Mechanism
Hot rolling above the recrystallization temperature produces a plate with uniform grain structure and no residual cold-work stresses, which matters for weathering steel because the protective rust layer forms through controlled oxidation of copper, chromium, nickel, and phosphorus in the alloy. The Q355NH grade follows the Chinese GB/T 4171 standard and offers equivalent corrosion resistance to Corten A under most atmospheric conditions. The 1020mm width comes directly from the hot strip mill, meaning no slitting or edge trimming that could expose untreated margins. Thickness tolerance under hot rolling conditions naturally holds wider than cold-rolled sheet, but our ±1% width control ensures consistent fit-up for welded assemblies.
The Hidden Cost of Unverified Weathering Steel
Plates without proper heat-number documentation fail customs inspection in the EU and Gulf states, triggering demurrage charges that dwarf the original material savings. More critically, substituting unverified steel for specified Q355NH or ASTM A588 compromises the protective patina formation, leading to premature through-thickness corrosion in industrial or marine environments. Engineering inspectors increasingly require third-party verification aligned with project specifications, and retroactive testing costs far exceed upfront certification. [NEED_CITE: weathering steel patina formation alloy requirements]
Why Project Buyers Source 1020mm Width Weather Resistant Steel Plate Through Us
We operate three hot rolling lines in Jinan with direct mill access, so there is no trading markup between the furnace and your container. Every batch ships with original mill test certificates showing full chemical composition and mechanical test results, and we arrange SGS or BV third-party inspection at the mill before loading. Our inventory covers over 2,800 specifications, so standard 1020mm widths ship from stock while custom thicknesses run in typical production lead times. The export team handles container loading optimization — critical for heavy plate where every ton of dead weight reduces payload — and prepares complete customs documentation including certificate of origin and packing lists matched to the bill of lading.
Documentation & Compliance
- Mill test certificate documenting Q355NH chemical composition (C, Si, Mn, P, S, Cu, Cr, Ni) and mechanical properties per GB/T 4171
- CE certificate with Factory Production Control per EN 10210/10219 for EU project compliance
- ISO 9001:2015 quality management certificate covering hot rolled plate production
- SGS or BV third-party inspection report available at the mill prior to container loading
- Full material traceability by heat number from ladle analysis through finished plate
- Export customs documents including packing list, bill of lading, and certificate of origin
Packaging, Loading & Delivery
- Hot rolled 1020mm width weather resistant steel plate bundled with steel straps and edge protectors to prevent coating damage during ocean transit
- Surface protected with anti-rust oil suitable for hot rolled finish, preserving mill scale integrity during storage and shipping
- Container loading optimized for heavy plate with weight distribution plans maximizing payload per 20ft or 40ft open-top container
- Cut-to-length service available for 1020mm width plates, reducing on-site cutting waste and handling time
- Each plate marked with heat number, steel grade Q355NH, and dimensions for site identification and traceability
- FOB, CIF, and DDP terms available with professional export documentation for customs clearance in destination country
Getting Your 1020mm Width Weather Resistant Steel Plate Quote
Submit your specifications including thickness, total tonnage, destination port, and required steel grade standard (GB, EN, or ASTM) via email or WhatsApp. We respond within hours with factory-direct pricing, mill test certificate confirmation, and estimated production lead time. For non-standard widths or thicknesses outside stock range, we provide custom rolling schedules with quantity requirements.
Start Your Weathering Steel Procurement
Send your 1020mm width weather resistant steel plate requirements with quantity and destination to receive competitive pricing and certification documentation.
Shandong Xin Jiyuan Special Steel Tube Co., Ltd
Website: www.sdxinjiyuan.com
Mobile/WhatsApp/WeChat: +86 188 5315 7756
Email: admin@sdxinjiyuan.com
