Description
Factory-Direct Hot Rolled Coil — 3 production lines and 2,800+ raw material specifications under one roof, eliminating trader markups and traceability gaps.
Technical Specifications
| Parameter | Value |
|---|---|
| Designation | S235JR / S355JR / Q235B / SS400 / ASTM A36 Hot Rolled Carbon Steel Coil |
| Product Type | Steel Coil |
| Steel Grade | S235JR, S355JR, SAE1006, Q235B, SS400, ASTM A36, Q195, Q345 |
| Standard | AISI, ASTM, BS, DIN, GB, JIS |
| Section Shape | Coil / Plate |
| Thickness | 2.0 mm – 25 mm |
| Width | 600 mm – 1500 mm |
| Technique | Hot Rolled |
| Surface Treatment | Dull finish / Oiled / Pickled |
| Tolerance | ±1% |
| Processing Service | Welding, Punching, Cutting, Bending, Decoiling |
| Packing | Standard seaworthy packing (plastic film + waterproof paper + steel strip) |
| Application | Shipbuilding, Boiler & Pressure Vessels, Container Manufacturing, Pipe Making, Cold Rolled Feedstock, Construction, Transport, General Fabrication |
Application Suitability
| Industry | Typical Applications |
|---|---|
| Pipe & Tube Manufacturing | ERW and SSAW pipe feedstock, scaffolding tubes, structural hollow sections |
| Construction & Infrastructure | Building frames, industrial platforms, bridge gusset plates, stair treads |
| Shipbuilding & Container | Deck plating, container floor cross-members, bulkhead stiffeners |
| Pressure Equipment | Boiler shells, storage tank walls, heat exchanger plates |
| Cold Reduction Feedstock | Pickled & oiled coil for cold rolling into thinner gauge sheets |
What Material Traceability Gaps Cost on a Hot Rolled Coil Order
A missing heat number on a mill certificate can hold an entire container at port for weeks.
Sourcing Hot Rolled Carbon Steel Coil S235JR S355JR from third-party traders often means the buyer receives a certificate that does not match the physical coil — chemistry drifts, yield strength falls short, and the shipment sits at the destination port accumulating demurrage charges. [NEED_CITE: material traceability requirements in EN 10204 inspection documents] When fabrication shops in Lagos, Dubai, or Jakarta receive coils with mismatched mill test certificates, the entire batch fails third-party SGS or BV inspection, and re-rolling or replacement adds weeks to the project schedule. The problem compounds when multiple grades are mixed in a single shipment without clear heat-number tagging.
How Thickness Tolerance and Width Range Match Structural Fabrication Needs
A Hot Rolled Carbon Steel Coil S235JR S355JR covering 2.0–25 mm thickness and 600–1500 mm width serves both light-gauge cold reduction feedstock and heavy structural plate in a single procurement cycle. The ±1% thickness tolerance ensures that CNC plasma cutting profiles hold dimensional accuracy, while the oiled or pickled surface options allow downstream cold rolling or direct welding without scale-related porosity. Our own steel mill produces these coils from slab to finished product, so every heat number on the certificate maps directly to the coil sitting on the truck — no intermediate warehouse reshuffling.
Engineering Compliance and Steel Grade Selection Across Markets
Structural projects specifying EN 1090-2 execution class EXC2 or EXC3 require full chemical and mechanical documentation per EN 10204 3.1 or 3.2, and the steel grade must be declared on every shipping document for customs clearance in EU member states. [NEED_CITE: EN 1090 structural steel fabrication conformity requirements] For North American projects, ASTM A36 coils carry the same procurement weight as S235JR does in European specs, while SS400 and Q235B serve Japanese-standard and Chinese-standard projects respectively. The ability to supply S235JR, S355JR, Q235B, SS400, and ASTM A36 from one mill simplifies multi-market EPC sourcing and avoids grade-substitution disputes during site inspection. [NEED_CITE: steel grade equivalence between EN 10025 and ASTM A36]
Understanding Hot Rolled Grades and Surface Conditions
S235JR and S355JR belong to the EN 10025-2 non-alloy structural steel family, where the number indicates minimum yield strength in MPa for thickness ≤ 16 mm — S355JR delivers higher load-bearing capacity than S235JR, making it the preferred choice for primary structural members. Q235B and SS400 occupy similar yield ranges in the GB and JIS systems, while ASTM A36 remains the baseline carbon steel for American structural and general engineering work. Hot rolling produces a mill scale surface that is suitable for structural applications after shot blasting; when further cold reduction is required, pickled and oiled coil removes the oxide layer and applies a temporary rust preventive, preserving surface quality for cold rolling mills. The SAE1006 grade offers ultra-low carbon content ideal for deep drawing and wire rod feedstock, while Q345 (equivalent to S355 in many respects) serves heavy structural and bridge applications.
Hidden Costs of Procuring the Wrong Grade or Unverified Coil
Ordering S235JR but receiving material that tests as Q195 means the yield strength falls below the structural engineer’s calculation assumptions — the building frame passes visual inspection but fails load testing, triggering full member replacement at the contractor’s expense. [NEED_CITE: consequences of steel grade mismatch in structural engineering] Coils with excessive negative tolerance may meet the weight-per-meter target on paper but compromise weld joint preparation and bolt-hole edge distance in fabricated connections. Without a verifiable heat number linking the coil to its original ladle analysis, third-party inspectors reject the shipment, and the buyer bears return freight, re-order lead time, and project delay penalties.
Why Source Hot Rolled Carbon Steel Coil S235JR S355JR From Our Mill
Our vertically integrated operation runs three hot rolling production lines and stocks over 2,800 raw material specifications, meaning the Hot Rolled Carbon Steel Coil S235JR S355JR you order is produced, tested, and certified within a single facility — no third-party slab purchases, no certificate forgery risk. Every coil carries a unique heat number that traces back to the ladle chemistry record, and our in-house laboratory issues EN 10204 3.1 mill test certificates before the coil leaves the warehouse. We accept SGS, BV, and TÜV third-party inspection at the mill, and our quality documentation package — including WPS records, dimensional inspection reports, and coating certificates — travels with the shipment for site acceptance. Professional loading plans account for coil weight distribution and edge protection, preventing transit damage on ocean freight to West Africa, the Middle East, and Southeast Asia.
Documentation & Compliance
- Mill test certificate documenting S235JR and S355JR chemical composition and mechanical properties per EN 10025-2, issued under EN 10204 3.1
- EN 10204 3.2 third-party inspection certificate available via SGS or BV upon request, covering chemical verification and tensile testing
- ISO 9001 quality management system certificate covering the full hot rolling and inspection process
- Material traceability sheet linking each coil heat number to its original slab cast and ladle analysis report
- Customs documentation package including commercial invoice, packing list, bill of lading, and certificate of origin for destination clearance
- CE marking declaration for structural steel products intended for EU construction projects under EN 1090
Packaging, Loading & Delivery
- Hot Rolled Carbon Steel Coil S235JR S355JR packed with inner plastic film, outer waterproof paper, and three circumferential steel strips to prevent edge damage during ocean transit
- Oiled surface coils receive additional VCI paper wrapping to prevent staining during humid climate storage at destination port
- Pickled and oiled coils for cold rolling feedstock are edge-protected with steel sleeves to maintain surface quality for downstream processing
- Coil loading plans optimize 20-foot and 40-foot container payload based on width and coil weight, with wooden chocks and lashing wires securing each unit
- Each coil is stenciled with heat number, steel grade (S235JR / S355JR / Q235B / SS400 / ASTM A36), thickness, width, and net weight for site identification
- Delivery terms available as FOB, CIF, or DDP to major ports including Lagos, Jebel Ali, Jakarta, and Manila
Ready to Verify Material Before It Ships
Submit your project drawing or coil specification — including steel grade, thickness, width, quantity, and destination port — and receive a detailed quotation with production schedule and mill test certificate sample within 24 hours. Our engineering team reviews your material requirements against available hot rolling schedules and confirms heat-number traceability before contract signing.
Request Your Hot Rolled Coil Quotation and Mill Test Certificate
Send your specification to admin@xjystructure.com or contact us via WhatsApp at +86 188 5315 7756.
