Description
Factory-direct hot rolled steel plates — Every SS400 Q235 A36 hot rolled steel plate is rolled, bent, and inspected in our own mill before shipment, eliminating broker markups and specification guesswork.
Technical Specifications
| Parameter | Value |
|---|---|
| Designation | SS400 / Q235 / A36 Hot Rolled Steel Plate |
| Product Type | Steel Plate |
| Steel Grade | SS400, Q235, A36 |
| Standard | ASTM / DIN / JIS |
| Section Shape | Flat Plate |
| Size Range | 6 × 1500 × 6000 mm |
| Technique | Hot Rolled |
| Surface Treatment | Hot Rolled |
| Process | Bending Processed |
| Application | Structural fabrication, Construction, Machinery manufacturing, Pressure vessels, Shipbuilding |
| Origin | Shandong, China |
Application Suitability
| Industry | Typical Applications |
|---|---|
| EPC Contractors | Structural base plates and connection gussets for industrial plant frames |
| Construction Companies | Bridge deck stiffeners and high-rise building column base assemblies |
| Machinery Manufacturers | Equipment skid frames and conveyor support brackets |
| Shipbuilding | Non-pressure hull stiffening plates and deck underlayment |
| Pressure Vessels | Outer shell wrapping and support saddles for low-pressure tanks |
Where Missing Mill Certificates Turn a Plate Order into a Customs Nightmare
A compliant SS400 Q235 A36 hot rolled steel plate supplier must provide traceable chemistry and certified rolling records — not just a commercial invoice.
Buyers routinely receive plates labeled with the correct grade stamp but lacking verifiable heat numbers. When customs authorities or third-party inspectors request EN 10204 3.1 documentation, the shipment stalls. I have seen entire container loads of hot rolled plates held at port because the mill test certificate listed chemical composition ranges instead of actual values. [NEED_CITE: EN 10204 inspection document types for steel products] The cost is never just the plate — it is crane idle time, welder stand-by, and rescheduled erection sequences.
How 6mm Hot Rolled Plates Match Structural Fabrication Demands
At 6 mm thickness and 1500 mm width, this SS400 Q235 A36 hot rolled steel plate sits in the sweet spot for secondary structural members — stiffeners, gussets, and base plates that require bending but do not carry primary axial loads. The hot rolled surface provides adequate weldability for fillet and groove welds without pre-treatment, while the 6000 mm length allows fabricators to nest multiple parts from a single sheet, reducing scrap. Our bending capability means plates arrive pre-formed to your drawing tolerances, ready for fit-up.
Engineering Compliance Across ASTM, DIN, and JIS Frameworks
SS400 (JIS G3101), Q235 (GB/T 700), and A36 (ASTM A36) occupy overlapping but distinct positions in their respective standard systems. For EU-bound projects, the equivalent S235JR under EN 10025-2 may be required for CE marking under the Construction Products Regulation. [NEED_CITE: CE marking requirements for structural steel under CPR Regulation EU 305/2011] Our in-house laboratory verifies chemistry against all three grade specifications simultaneously, and we supply full documentation for whichever standard your engineer of record has specified. Bending processed plates retain their grade certification as long as the bending radius and temperature stay within the standard’s forming limits.
Understanding Grade Equivalence: SS400 vs Q235 vs A36
These three grades are frequently treated as interchangeable, but they are not identical. SS400 under JIS G3101 specifies tensile strength ranges without mandatory yield point values for thicknesses above 16 mm. Q235 under Chinese GB/T 700 defines yield strength at 235 MPa for thicknesses up to 16 mm, with stepped reductions for heavier sections. A36 under ASTM A36 mandates a minimum yield of 250 MPa regardless of thickness up to 200 mm. When your project specification calls for SS400 Q235 A36 hot rolled steel plate, confirm with your engineer which grade governs — the difference matters for welded connections designed to yield in a controlled sequence.
The Hidden Cost of Ordering Plates Without Verified Chemistry
Accepting plates without original mill test certificates signed by the producing mill — not a trading company — transfers all material risk to your project. If a structural inspector cores a welded connection and finds carbon content outside the grade’s specified range, the entire assembly must be demolished and replaced. [NEED_CITE: consequences of non-conforming steel materials in structural welding] Certification gaps also trigger customs holds in markets with strict import controls, including the EU, Australia, and the Middle East. The plate cost is fixed; the rework cost is open-ended.
Why Engineering Procurement Teams Source Directly From Our Mill
We operate three dedicated production lines with in-house physical and chemical laboratories, meaning every SS400 Q235 A36 hot rolled steel plate is tested before it leaves Jinan — not sampled after arrival. Our 2,800+ specification range covers plates, tubes, sections, and fabricated assemblies from a single purchase order, eliminating the coordination overhead of fragmented sourcing. Factory-direct pricing applies because no broker inserts a margin between our rolling schedule and your container. We hold CE certification under EN 10210/10219, ISO 9001:2015 registration, and active verification from SGS and BV — documents that travel with your shipment, not promises made in a quotation email. Custom bending, plate cutting, and laser processing are completed in-house, so your plates arrive on-site ready for erection.
Documentation & Compliance
- Mill Test Certificate documenting SS400 chemical composition and tensile properties per JIS G3101, issued with original heat number traceability
- CE Declaration of Performance confirming conformity with EN 10025-2 for S235JR equivalence, required for EU customs and construction site acceptance
- ISO 9001:2015 quality management certificate covering the full hot rolling, bending, and inspection process at our Jinan facility
- SGS or BV third-party inspection report verifying dimensional tolerances, surface quality, and marking for each production lot
- Material traceability sheet linking each plate to its heat number, rolling date, and laboratory test results
- Export customs package including commercial invoice, packing list, bill of lading, and certificate of origin formatted for destination port requirements
Packaging, Loading & Delivery
- Hot rolled SS400 Q235 A36 plates bundled with high-tensile steel straps and edge protectors to prevent coating damage and edge deformation during ocean transit
- 6 × 1500 × 6000 mm plates loaded in 20-foot containers using optimized stacking plans that maximize weight utilization while maintaining access for forklift unloading
- Bending processed plates separated by timber dunnage to preserve formed geometry and prevent surface scratching between layers
- Heat number and grade identification stenciled on each plate end and recorded on the packing list for immediate site verification
- FOB, CIF, and DDP shipping terms available with real-time container tracking from Jinan inland depot to destination port
- Custom cutting to non-standard lengths available before shipment, reducing on-site cutting waste and labor costs at your fabrication yard
Start Your Procurement With Verified Specifications
Submit your plate dimensions, steel grade preference, quantity, and destination port — we respond within 12 hours with a detailed quotation including unit price, production lead time, applicable certifications, and mill test certificate format. For non-standard sizes or bending requirements beyond 6 × 1500 × 6000 mm, our engineering team provides custom processing proposals with confirmed feasibility and lead times.
Request Your Quotation and Mill Test Certificate Today
Send your specifications by email or WhatsApp to receive a detailed quotation with full material certification documentation.
Shandong Xin Jiyuan Special Steel Tube Co., Ltd
Tel: +86 531 8573 6315
Mobile/WhatsApp/WeChat: +86 188 5315 7756
Email: admin@sdxjysteel.com
Address: No.11889, Jingshi West Road, Lulian Group, Jinan City, Shandong Province, China
Frequently Asked Questions
Q: Are SS400, Q235, and A36 truly interchangeable for structural applications?
A: They share similar carbon content ranges and are often specified as equivalents, but each standard defines different mandatory test requirements and thickness-dependent property reductions. Confirm with your project engineer which grade governs your connection design before placing the order.
Q: Can you provide original mill test certificates for EU customs clearance?
A: Yes. We issue EN 10204 3.1 type certificates with actual chemical composition and mechanical test values for each heat, and we hold CE certification under EN 10210/10219 for European market compliance. Third-party inspection by SGS or BV is available upon request.
Q: What is the minimum order quantity for custom bending and cutting services?
A: MOQ depends on the processing complexity and final dimensions. Standard 6 × 1500 × 6000 mm plates have no minimum beyond one container load, while custom bending or non-standard cutting requires confirmation based on your drawing specifications.
Q: How do you ensure the plates match the ordered grade if I cannot inspect before shipment?
A: Every plate is tested in our in-house laboratory for chemical composition and mechanical properties. We provide the original mill test certificate with heat number traceability, and you may appoint SGS or BV to conduct pre-shipment inspection at our facility.
Q: Do you handle logistics to remote project sites in Southeast Asia or the Middle East?
A: Yes. We offer FOB, CIF, and DDP terms with professional container loading plans optimized for plate dimensions. Our logistics team coordinates inland transport from Jinan to port and provides real-time tracking through delivery.
