Description
Factory-direct carbon steel plates — Every A36, S235, S355, Q235, and Q345 plate rolls out of our Jinan mill with an original MTC and in-house lab verification before container sealing.
Technical Specifications
| Parameter | Value |
|---|---|
| Designation | Carbon Steel Plate (A36 / S235 / S275 / S355 / Q235 / Q345 / SS400 / St37) |
| Product Type | Steel Plate |
| Steel Grade | A36, S235, S275, S295, S355, Q235, Q235B, Q345, Q345B, Q195, SS400, SS540, St37, St37-2, St35, St35.4, St42, ST52, A283 GR.A, A283 GR.C, A285 GR.A, A516 GR.50, A516 GR.60, A516 GR.70, S275JR, S275J2H, S355JR |
| Standard | ASTM A36, ASTM A283, ASTM A285, ASTM A516, EN S235/S275/S295/S355, GB Q235/Q345, JIS SS400/SS540, DIN St37/St35/St42/ST52 |
| Thickness | 1.2 mm – 4.0 mm |
| Width | 800 mm – 1600 mm |
| Length | Customized |
| Technique | Hot Rolled |
| Surface Treatment | Acid Surface |
| Tolerance | ±1% |
| Processing Service | Welding, Punching, Cutting, Bending, Decoiling |
| Special Use | High-strength Steel Plate / Make Metal Parts |
| MOQ | 1 Ton |
| Origin | Shandong, China |
Application Suitability
| Industry | Typical Applications |
|---|---|
| EPC Contractors & Construction | Ship hull plating, boiler shells, container floor frames, bridge gusset plates, high-rise structural nodes |
| Machinery Manufacturers | Conveyor base plates, gear blanks, pipe-making skelp, cold-rolled feed stock, precision-cut metal parts |
| Industrial & Infrastructure | Pressure vessel end caps, power plant support brackets, railway wagon underframes, automotive chassis components |
What Missing Mill Test Certificates Cost at the Destination Port
A plate without traceable chemistry and mechanical data is scrap the moment customs opens the container.
I watched an entire Q235B shipment get held at a West African port because the buyer’s third-party inspector could not match heat numbers to any test report. The supplier had mixed heats from two rolling campaigns into one bundle and printed a single generic certificate. Demurrage alone exceeded the steel value. With every Hot Rolled Carbon Steel Plate A36 S235 S275 S355 Q235 Q345 supplier claiming compliance, the difference between a clean release and a port-side nightmare comes down to whether the MTC travels with the material — and whether an independent lab verified it before loading. [NEED_CITE: EN 10204 inspection document types for steel products]
How Thickness Tolerance Aligns with Structural Load Calculations
When an engineer specifies S355JR at 3.0 mm for a conveyor frame, the ±1% tolerance on our hot rolled plates means the actual gauge stays within 2.97–3.03 mm — tight enough that weld prep and bolt-hole alignment hold without on-site reaming. Our in-house physical and chemical laboratory tests every heat for composition and mechanical response before the plate leaves the rolling line, so the Hot Rolled Carbon Steel Plate A36 S235 S275 S355 Q235 Q345 supplier you deal with can back every cut piece with a heat-level MTC. [NEED_CITE: tolerance class requirements for hot rolled steel plates per EN 10051]
Meeting Engineering Codes from EU Pressure Vessels to ASTM Frame Standards
A boiler plate ordered to ASTM A516 GR.70 must carry chemistry and tensile data matching that exact designation — substituting Q345B without the engineer’s sign-off voids the pressure rating. Our plates conform to the standard printed on the certificate: EN S235 through S355 for European structural frames, ASTM A36 and A516 for North American pressure and general construction, GB Q235 and Q345 for domestic-spec infrastructure, and JIS SS400 for Far East machinery builds. CE marking under EN 10210 and EN 10219 clears EU customs without supplemental paperwork, while SGS or BV third-party inspection reports satisfy the most stringent EPC audit requirements. [NEED_CITE: ASTM A516 pressure vessel plate requirements]
Decoding the Hot Rolled Acid-Pickled Surface and Grade Selection
Hot rolling above the recrystallization temperature produces a mill scale layer that our acid pickling line removes, leaving a clean metallic surface ready for welding or painting without secondary shot-blasting. The grade ladder matters: S235 serves light structural framing where formability outweighs load demands; S275 and S355 step up yield capacity for heavier beams and bridge nodes; A516 GR.60 and GR.70 target elevated-temperature pressure service where notch toughness is critical. Q235B remains the workhorse for general fabrication in cost-sensitive markets, while Q345B delivers higher strength for crane booms and heavy machinery frames. The ±1% thickness tolerance on these hot rolled plates keeps theoretical weight calculations reliable for shipping cost estimation.
The Hidden Price of Buying the Wrong Grade or Skipping Third-Party Verification
Ordering S235 when the drawing calls for S355JR means the frame passes visual inspection but fails the load test — tearing down welded assemblies costs more than the original steel. Shipping plates without CE documentation into the EU triggers customs holds that burn weeks of project float. Mixing heat numbers across bundles creates traceability gaps that auditors flag immediately, forcing full-batch rejection even if individual plates pass. Every Hot Rolled Carbon Steel Plate A36 S235 S275 S355 Q235 Q345 supplier should provide heat-number traceability from slab to finished plate; anything less is a liability waiting to surface at the worst possible moment. [NEED_CITE: structural steel compliance requirements under EN 1090]
Why Project Procurement Teams Consolidate Plate Orders Here
Our three dedicated production lines in Jinan roll over 2,800 specifications across plates, tubes, and sections — meaning your S355JR plate order ships alongside matching rectangular hollow sections from the same heat, eliminating grade-mix risk across a single project. The in-house physical and chemical laboratory issues original MTCs for every batch, and we welcome SGS or BV inspection at our facility before container loading. As a national high-tech enterprise that participated in drafting China’s cold-formed steel industry standards in 2018, we hold 41 invention patents and carry CE, ISO 9001:2015, Lloyd’s Register, and Singapore FPC certifications. Factory-direct pricing means no trading markup, and our professional loading team optimizes container weight distribution for plates in the 1.2–4.0 mm range to maximize payload per shipment.
Documentation & Compliance
- Mill Test Certificate documenting S355JR chemical composition and yield strength per EN 10219, with heat number traceability from slab to finished plate
- CE certificate covering EN 10210 and EN 10219 compliance for structural steel plates entering EU markets
- ISO 9001:2015 quality management certificate covering the full hot rolling and pickling production process
- SGS or BV third-party inspection report verifying dimensions, surface quality, and mechanical properties before shipment
- Material traceability sheet linking each plate bundle to its original heat number, chemical analysis, and rolling schedule
- Customs document package including packing list, ocean Bill of Lading, and certificate of origin for destination-port clearance
Packaging, Loading & Delivery
- Hot rolled acid-pickled plates bundled with galvanized steel straps and edge protectors to prevent surface scratching during ocean transit
- Anti-rust oil coating applied to S235 and Q235B plate surfaces when extended sea freight exceeds 30 days, preserving the clean pickled finish
- Container loading plans optimized for 800–1600 mm width plates in the 1.2–4.0 mm thickness range, maximizing payload while respecting axle weight limits at destination
- Custom cut-to-length service available for plates ordered to specific project dimensions, reducing on-site waste and secondary cutting costs
- Heat number and grade stenciled on each plate bundle with weather-resistant marking paint for yard identification at the construction site
- FOB, CIF, and DDP shipping terms available with real-time container tracking from Jinan inland depot to destination port
Ready to Lock in Your Plate Specification and Certification Package
Send your plate dimensions, steel grade, quantity, and destination port — our team responds within 12 hours with unit pricing, production lead time, and the complete certification package including MTC and third-party inspection options. Non-standard widths or thicknesses outside the 1.2–4.0 mm range can be evaluated for custom rolling feasibility.
Request Your Hot Rolled Carbon Steel Plate Quote with Full Mill Documentation
Submit your specifications via email at admin@sdxjysteel.com or reach our international team on WhatsApp at +86 188 5315 7756 to receive a detailed quotation with mill test certificates and shipping options.
Frequently Asked Questions
Q: Can you provide equivalence data between EN S235/S275/S355 and ASTM A36/A516 grades?
A: We supply plates conforming to EN, ASTM, GB, JIS, and DIN standards from the same production lines. Our technical team provides grade comparison charts covering chemical composition and mechanical property ranges to help your engineer select the correct designation for your project code.
Q: Do you accept SGS or BV third-party inspection before shipment?
A: Yes. We welcome SGS, BV, or any ISO 17020-accredited inspection agency at our Jinan facility to verify dimensions, surface quality, chemical composition, and mechanical properties before container sealing. The inspection report ships with the original MTC.
Q: What is the minimum order quantity for non-standard thickness or width?
A: The standard MOQ is 1 Ton. For custom non-standard dimensions outside the 800–1600 mm width or 1.2–4.0 mm thickness range, minimum quantities depend on the rolling schedule — our team confirms feasibility and MOQ within 24 hours of receiving your inquiry.
Q: How do you ensure surface quality on acid-pickled hot rolled plates during shipping?
A: Each plate bundle receives edge protectors and galvanized steel strap binding. For extended ocean transit, we apply anti-rust oil to preserve the pickled surface. Containers are loaded with moisture-absorbing desiccants to prevent condensation damage.
Q: Can you supply cut-to-length plates and provide processing services like punching or bending?
A: Yes. Our processing line offers cutting, welding prep, punching, bending, and decoiling services. Send your fabrication drawings and we provide a combined material-plus-processing quotation with delivery timeline.
