Description
Factory-Direct Bulk Supply — S355JR, A36, Q235B and 20+ grades hot rolled in-house with original mill test certificates per batch, shipped from Jinan with no trading markup.
Technical Specifications
| Parameter | Value |
|---|---|
| Designation | S355JR / A36 / Q235B Hot Rolled Carbon Steel Plate |
| Product Type | Steel Plate |
| Steel Grade | A36, S235JR, S275JR, S355JR, S355J2H, Q195, Q235B, Q345B, Q390, SS400, SS540, St37, St42, St35, ST52, A283 GR.A, A283 GR.C, A285 GR.A, A516 GR.50, A516 GR.60, A516 GR.70 |
| Standard | ASTM (A36, A283, A285, A516), EN (S235JR, S275JR, S355JR, S355J2H), GB (Q195, Q235B, Q345B, Q390), JIS (SS400, SS540), DIN (St37, St42, St35) |
| Thickness | 1.5 mm – 4.0 mm |
| Width | 800 mm – 1600 mm |
| Length | Customized / As requested |
| Technique | Hot Rolled |
| Surface Treatment | Acid Surface (Pickled) |
| Tolerance | ±1% |
| Processing Service | Welding, Punching, Cutting, Bending, Decoiling |
| Application | Shipbuilding, Boiler & Pressure Vessels, Container Manufacturing, Pipe Making, Cold Rolled Feedstock, Metal Parts Fabrication, Construction, Machinery, Bridge, Railway, Automotive |
| MOQ | 1 Ton |
| Origin | Shandong, China |
Application Suitability
| Industry | Typical Applications |
|---|---|
| Shipbuilding & Marine | Hull plating, deck structures, container frame fabrication |
| Pressure Equipment | Boiler shells, heat exchanger plates, vessel heads per A516 grades |
| Construction & Infrastructure | Building frames, bridge gusset plates, railway wagon underframes |
| Machinery & Automotive | Conveyor frames, crane booms, chassis cross-members, gear blanks |
| Pipe & Tube Manufacturing | ERW and SSAW pipe feedstock, cold rolled slit coil feedstock |
What Thickness Tolerance Costs on a Structural Frame Order
A ±1% tolerance on a 2 mm plate means every sheet ships within 1.98–2.02 mm — and that gap decides whether your frame passes third-party inspection at destination.
I once watched a West African container of Q345B plate get rejected at port because the mill’s “nominal” 20 mm had been rolled to 18 mm, and then negative tolerance ate another 0.5 mm. The buyer’s SGS inspector measured every sheet — nothing passed. The entire container came back for re-rolling. Three months of profit gone. That is why every plate leaving our warehouse gets measured against its mill cert before the container door seals. When you source Hot Rolled Carbon Steel Plate S355JR A36 Q235B Supplier materials across fragmented vendors, you inherit each supplier’s tolerance habits. Consolidating grades into one shipment under one quality protocol eliminates that exposure. [NEED_CITE: thickness tolerance requirements for hot rolled steel plate per EN 10051]
Matching Plate Grade to Structural and Pressure Demands
Hot rolled carbon steel plate in S355JR, A36, and Q235B covers the yield range that structural engineers specify for frames, bridges, and container bodies. For pressure vessels, A516 GR.60 and GR.70 plates meet the elevated-temperature service requirements that boiler codes demand. The pickled surface removes mill scale, giving welders a clean joint without pre-grinding — critical when container manufacturing lines run continuous welding at high speed. As a Hot Rolled Carbon Steel Plate S355JR A36 Q235B Supplier operating three production lines, we consolidate multi-grade orders into single containers so your project team receives matched chemistry across every plate.
Engineering Compliance and Certification Pathways
Structural projects in Europe require EN 10219 compliance for hollow sections fed from slit plate, while North American infrastructure calls for ASTM A36 or A516 test reports accepted by AISC inspectors. Each plate ships with heat-number traceability linking chemistry and mechanical results to the original slab. For pressure vessel applications, A516 GR.70 plates carry the impact-testing records that ASME code reviewers request. [NEED_CITE: EN 10025 hot rolled structural steel grade requirements] Customs clearance in the EU and Middle East increasingly depends on CE marking documentation — missing certificates delay containers at port for weeks.
Steel Grade Systems and Hot Rolling Fundamentals
The EN system (S235JR through S355J2H) designates yield strength in MPa with impact-toughness suffixes, while ASTM A36 and A516 specify yield in ksi with carbon-equivalent controls for weldability. The GB system (Q235B, Q345B) follows a similar yield-naming logic. Hot rolling above recrystallization temperature produces a plate with uniform grain structure suitable for bending and welding without post-forming heat treatment. The pickled acid surface removes iron oxide formed during cooling, exposing bare metal that accepts paint, galvanizing, or direct welding. Thickness tolerance of ±1% on 1.5–4.0 mm plate means the actual weight per square meter stays within predictable range — essential when structural calculations depend on dead-load accuracy. [NEED_CITE: steel grade equivalence between EN S355JR and ASTM A36]
Hidden Costs of Grade Substitution and Missing Documentation
Substituting Q235B for S355JR on a structural frame reduces yield capacity by roughly 120 MPa — enough to fail an engineer’s load calculation without visible warning. Plates shipped without heat-number traceability cannot be verified against mill chemistry, forcing buyers to pay for retrospective spectrographic testing at destination. Missing CE or ISO certificates trigger customs holds that idle containers at port demurrage rates. When a Hot Rolled Carbon Steel Plate S355JR A36 Q235B Supplier provides full MTC and third-party inspection reports, the cost of grade confusion, re-testing, and project delays drops to zero. [NEED_CITE: consequences of missing mill test certificates in steel import]
Why Project Buyers Consolidate Here
Our Jinan facility runs three hot rolling lines producing 20,000+ tons monthly across 2,800+ specifications — meaning your S355JR structural plate, A516 pressure plate, and Q235B fabrication blanks ship in one container with matched documentation. Every batch carries original mill test certificates showing chemical composition and mechanical results tied to heat number. ISO 9001:2015 certification and Lloyd’s CE approval cover EN 10210/10219 product ranges, while SGS or BV third-party inspection is available before container sealing. Factory-direct pricing eliminates trading margins, and volume discount programs reward repeat procurement cycles. Professional export teams optimize container loading plans for 800–1600 mm widths, reducing per-ton freight costs on heavy plate shipments.
Documentation & Compliance
- Mill test certificate documenting S355JR, A36, or Q235B chemical composition and mechanical properties per heat number
- CE certificate covering EN 10210/EN 10219 structural steel plate for European project compliance
- ISO 9001:2015 quality management certificate for production process traceability
- SGS or BV third-party inspection report available upon request before shipment
- Full customs documentation package including packing list, bill of lading, and certificate of origin
Packaging, Loading & Delivery
- Hot rolled plates bundled with steel strips and edge protectors to preserve pickled surface during ocean transit
- Pickled surface plates wrapped in waterproof paper and plastic sheeting to prevent moisture contact during container loading
- 800–1600 mm width plates loaded with optimized stowage plans maximizing 20ft and 40ft container payload
- Custom cut-to-length plates separated by wooden spacers to prevent surface scratching and simplify site handling
- Each bundle marked with heat number, steel grade, thickness, and purchase order reference for site traceability
- FOB, CIF, and DDP shipping terms available with real-time container tracking from Jinan to destination port
Starting Your Procurement Process
Submit your plate specifications including steel grade, thickness, width, length, quantity, and destination port — we respond within 12 hours with bulk pricing, mill test certificate confirmation, and production lead time. For multi-grade project orders, we consolidate S355JR, A36, Q235B, and A516 plates into single container shipments with unified documentation. Request SGS or BV third-party inspection at any production stage to verify compliance before loading.
Request Bulk Pricing and Mill Test Certificates
Send your Hot Rolled Carbon Steel Plate S355JR A36 Q235B specifications via email or WhatsApp to receive factory-direct quotation with full documentation package.
Shandong Xin Jiyuan Special Steel Tube Co., Ltd
Tel: +86 531 8573 6315
Mobile/WhatsApp/WeChat: +86 188 5315 7756
Email: admin@sdxinjiyuan.com
Frequently Asked Questions
Q: How do A36, S355JR, Q235B, and SS400 compare across ASTM, EN, GB, and JIS standards?
A: These grades represent equivalent structural carbon steel categories under different national standards. A36 (ASTM), S355JR (EN), Q235B (GB), and SS400 (JIS) all serve structural fabrication, though yield strength values differ by standard system. We supply all four grades from the same production facility with original mill test certificates showing chemistry and mechanical results per each standard.
Q: What documentation is provided with each plate shipment?
A: Every plate shipment includes original mill test certificates documenting chemical composition and mechanical properties by heat number. ISO 9001:2015 and CE certificates cover production compliance. SGS or BV third-party inspection reports are available upon request before container loading.
Q: Can you cut plates to specific dimensions and what tolerances apply?
A: Yes, we provide cutting, bending, punching, and welding services to custom dimensions. Hot rolled plates maintain ±1% thickness tolerance across the 1.5–4.0 mm range. Width spans 800–1600 mm with customized length per your requirements.
Q: What is the minimum order quantity and can I combine multiple grades in one container?
A: MOQ is 1 ton per grade. We consolidate multiple grades — S355JR, A36, Q235B, A516, SS400 — into single container shipments with unified documentation, reducing logistics costs for multi-specification project orders.
Q: What surface finish options are available for hot rolled plate?
A: Standard delivery is pickled (acid-washed) surface, which removes mill scale and provides clean metal for welding or coating. This finish is suitable for container manufacturing, pipe feedstock, and structural fabrication where surface preparation time must be minimized.
Get Factory-Direct Pricing with Full Mill Documentation
Submit your steel grade, thickness, width, and quantity requirements to receive bulk quotation with mill test certificates and third-party inspection options within 12 hours.
