Description
One-Stop Hot Rolled Coil Sourcing — S235JR, S355JR, Q235B, SS400, and A36 grades held in thickness from 2.0 mm to 25 mm, width 600–1500 mm, backed by in-house lab testing and Lloyd’s CE certification.
Technical Specifications
| Parameter | Value |
|---|---|
| Designation | S235JR / S355JR / Q235B / SS400 / ASTM A36 Hot Rolled Carbon Steel Coil |
| Product Type | Steel Coil |
| Steel Grade | S235JR, S355JR, Q235B, SS400, ASTM A36, SAE1006, Q195–Q345 |
| Standard | AISI, ASTM, BS, DIN, GB, JIS |
| Section Shape | Coil / Plate |
| Size Range | Thickness 2.0–25 mm, Width 600–1500 mm |
| Technique | Hot Rolled |
| Surface Treatment | Dull / Oiled / Black (Hot Rolled Pickled & Oiled) |
| Tolerance | ±1% |
| Processing Service | Welding, Punching, Cutting, Bending, Decoiling |
| Application | Shipbuilding, Boiler & Pressure Vessels, Container Manufacturing, Pipe Making, Construction, General Fabrication |
| Origin | Shandong, China |
Application Suitability
| Industry | Typical Applications |
|---|---|
| Pipe Manufacturing | ERW and SSAW tube feedstock for structural hollow sections and fluid transport pipelines |
| Shipbuilding & Offshore | Hull plating, deck structures, and bulkhead fabrication |
| Pressure Vessel & Boiler | Boiler shells, heat exchanger plates, and storage tank walls |
| Container Manufacturing | Corrugated side panels, roof sheets, and floor cross members |
| Steel Structure & Construction | Beam-to-plate welding, column base plates, and bracket fabrication |
| General Fabrication | Machine frames, conveyor structures, and agricultural equipment chassis |
Grade Equivalence Across EN, ASTM, GB, and JIS Costs More Than You Think
Ordering S235JR when your drawing calls for ASTM A36 is not a minor footnote — it can block customs clearance and fail mill inspection.
Procurement teams across EU, Middle East, and Southeast Asian markets routinely face grade confusion when drawings specify EN 10219 S235JR but local mills quote Q235B or SS400 as “equivalent.” The chemical composition overlaps, but the impact energy requirements and elongation thresholds differ. A coil that passes GB/T 700 Q235B tensile testing may still fall short of EN 10025-2 S235JR impact toughness at 0°C. Without documented equivalence mapping and per-heat mill test certificates, buyers risk material rejection at destination port or structural non-compliance during engineer approval. [NEED_CITE: steel grade equivalence mapping between EN 10025 and ASTM A36]
Matching Thickness and Width to Downstream Fabrication
Hot rolled carbon steel coil in S235JR and S355JR grades at 2.0–3.5 mm thickness serves as direct feedstock for ERW pipe mills producing structural tubes up to moderate diameters. Heavier gauges from 6.0 mm to 25 mm at widths up to 1500 mm are slit and cut-to-length for pressure vessel dished ends, shipbuilding shell plates, and heavy bracket fabrication. The ±1% thickness tolerance ensures consistent weight calculation for container loading and avoids surprise shortfalls when engineers calculate dead load from nominal plate mass. Our decoiling and cut-to-length service allows fabricators to receive plates in exact project dimensions rather than running coils through their own leveling lines.
Structural Code Compliance and Surface Condition
Engineering specifications for steel structures increasingly reference EN 1993 (Eurocode 3) or AISC 360, both of which require verified mechanical properties and traceable heat numbers. Hot rolled pickled & oiled surface finish removes mill scale and provides temporary rust protection during ocean transit, making it suitable for further cold rolling, galvanizing, or direct welding without additional descaling. For projects targeting EU markets, Lloyd’s CE certification under EN 10210 and EN 10219 confirms that the steel meets European structural integrity requirements. [NEED_CITE: EN 10219 cold-formed hollow section material requirements] Buyers sourcing S355JR for welded box girders or moment-resisting frames should verify that the mill test certificate includes Charpy impact values at the specified test temperature.
Understanding the Grade Designation System
The “S” prefix in S235JR and S355JR denotes structural steel per EN 10025, with the number indicating minimum yield strength in MPa for thickness ≤16 mm. The “JR” suffix specifies impact energy of 27J at room temperature (20°C), while “J0” and “J2” indicate testing at 0°C and -20°C respectively — critical for projects in cold climates or offshore environments. Q235B follows the Chinese GB/T 700 system where “Q” represents yield point and “235” the value in MPa; the “B” grade requires room temperature impact testing. SS400 per JIS G 3101 is a general structural grade with tensile strength specified rather than yield, making direct equivalence to S-series grades imprecise. ASTM A36 specifies minimum yield of 250 MPa and tensile of 400–550 MPa, positioning it between S235JR and S275JR in strength. Understanding these distinctions prevents over-specification (paying for S355JR when A36 suffices) or under-specification (ordering Q235B for a design requiring verified impact toughness).
The Hidden Price of Unverified Mill Certificates
Accepting a mill test certificate at face value without third-party verification has cost projects far more than the price of an SGS inspection. When chemical composition or mechanical properties deviate from the specified grade — even slightly — the entire coil becomes unusable for certified structural work. Replacement material arriving by air freight can exceed the original steel cost. Engineering rejection during site inspection triggers rework, weld procedure requalification, and schedule delays that dwarf material savings. [NEED_CITE: consequences of material non-compliance in structural steel procurement] Sourcing Hot Rolled Carbon Steel Coil S235JR S355JR supplier from a mill with in-house physical and chemical laboratory eliminates the gap between paper certification and actual material properties.
Why Procurement Teams Source From Shandong Xin Jiyuan
Every coil leaving our facility passes through an in-house physical and chemical laboratory performing spectrochemical analysis, tensile testing, and dimensional verification before the mill test certificate is issued. We hold Lloyd’s CE certification for EN 10210 and EN 10219, ISO 9001:2015 quality management, and Singapore FPC — allowing direct customs clearance across EU and regulated markets without additional testing. Our 2,800+ specification coverage means that whether you need 2.0 mm SAE1006 for cold rolled feedstock or 25 mm S355JR for heavy structural plate, we consolidate into a single shipment rather than forcing you to coordinate multiple suppliers. Third-party inspection through SGS or BV is arranged at buyer’s request, with full photo documentation provided before container sealing. Professional loading with edge protectors and moisture barriers prevents transit damage that has historically caused edge cracking and surface corrosion on pickled & oiled coils.
Documentation & Compliance
- Mill test certificate (EN 10204 3.1) documenting S235JR or S355JR chemical composition, yield strength, tensile strength, and elongation per heat number
- Lloyd’s CE certificate confirming compliance with EN 10210 and EN 10219 for structural steel products entering EU markets
- ISO 9001:2015 quality management system certificate covering hot rolled coil production and inspection processes
- SGS or BV third-party inspection report verifying dimensional tolerance, surface condition, and mechanical properties at buyer’s request
- Material traceability report linking each coil to its heat number, chemical analysis, and mechanical test results
- Full export documentation including packing list, bill of lading, and certificate of origin for customs clearance in destination country
Packaging, Loading & Delivery
- Hot rolled coils in S235JR and S355JR grades packed in seaworthy export bundles with three steel circumferential strips and one radial strip, wrapped in waterproof paper and plastic film to prevent moisture ingress during ocean freight
- Pickled & oiled surface finish coils receive additional edge protectors to preserve the protective oil film and prevent edge oxidation that can compromise further processing
- Coil width 600–1500 mm and thickness 2.0–25 mm optimized for 20ft and 40ft container loading, with weight distribution calculated to maximize payload while meeting road transport limits at destination
- Cut-to-length plates slit from master coils marked with heat number, steel grade, and thickness for immediate traceability upon arrival at fabrication shops
- Shipping terms available as FOB, CIF, or DDP with professional container loading supervision to prevent coil shifting and edge damage during transit
Request Your Quotation With Verified Material Certification
Submit your required steel grade, thickness, width, quantity, and destination port to receive a detailed quotation including unit price, production lead time, and shipping terms. We provide mill test certificates and arrange third-party inspection before shipment, ensuring material compliance with your project specification.
Start Your Hot Rolled Coil Procurement
Send your specification to admin@sdxjypipe.com or contact via WhatsApp at +86 188 5315 7756 for pricing and mill test certificate samples.
Frequently Asked Questions
Q: How do S235JR, Q235B, SS400, and ASTM A36 compare — which grade should I specify?
A: These grades share similar carbon content ranges but differ in impact testing requirements and specification frameworks. S235JR (EN 10025) requires 27J impact energy at 20°C, while Q235B (GB/T 700) requires impact testing at room temperature without specified energy values. SS400 (JIS G 3101) specifies tensile strength rather than yield. ASTM A36 requires minimum 250 MPa yield. We provide documented equivalence mapping and recommend ordering to the exact standard your engineering drawing specifies.
Q: Can you provide third-party inspection and EN 10204 3.1 mill test certificates for EU customs clearance?
A: Yes. Every coil is accompanied by an EN 10204 3.1 mill test certificate showing chemical composition and mechanical properties per heat number. SGS or BV third-party inspection is arranged at buyer’s request before shipment. Our Lloyd’s CE certification under EN 10210 and EN 10219 supports direct customs clearance across EU member states.
Q: What is the MOQ for hot rolled coils, and do you offer cut-to-length or slitting service?
A: We offer cut-to-length plates and slitting service from master coils to meet specific project dimensions. Contact us with your required thickness, width, and length to receive a customized quotation including processing charges.
Q: What surface finish options are available — pickled & oiled, black, or galvanized?
A: Hot rolled coils are supplied in pickled & oiled condition as standard, providing mill scale removal and temporary rust protection. Black (as-rolled) finish is available for applications where surface appearance is not critical. Galvanized coating can be applied for enhanced corrosion resistance in exposed environments.
Q: How do you prevent coil edge damage and corrosion during ocean freight?
A: Coils are packed with waterproof paper inner wrapping, plastic film outer wrapping, and three steel circumferential strips. Edge protectors are applied to preserve the pickled & oiled surface finish. Containers are loaded with coil cradles and secured with wooden wedges to prevent shifting during transit.
