Description
Factory-Direct 304 316L Stainless Steel Coil Supply — every coil rolls from our in-house melting and cold/hot rolling lines in Jinan, shipped with full heat-number traceability and third-party inspection reports.
Technical Specifications
| Parameter | Value |
|---|---|
| Designation | 304 / 316L Stainless Steel Coil |
| Product Type | Stainless Steel Sheet / Plate / Coil / Strip |
| Steel Grade | 201, 301, 304, 309S, 310S, 316, 316L, 321, 405, 409L, 410, 410L, 420, 430, 430A, 904L, 2205, 2507, 2520 |
| Standard | ASTM, JIS, GB, AISI, DIN, BS, EN |
| Thickness (Cold Rolled) | 0.15–3 mm |
| Thickness (Hot Rolled) | 3–120 mm |
| Width | 1000 mm / 1219 mm / 1500 mm (slit to narrow width available) |
| Length | 2000 mm / 2438 mm / 2440 mm / 3048 mm (or customized) |
| Technique | Cold Rolled / Hot Rolled |
| Surface Treatment | 2B, 2D, BA, 8K, HL (Hairline), NO.4, NO.1, Embossed, Colored |
| Packing | Waterproof paper + steel strapping + pallet; BA and 8K with PVC film |
| Delivery | 7–10 working days (subject to order quantity) |
| Application | Medical equipment, food industry, table-wares, construction, kitchen utensils, chemical industry, petroleum industry, architectural decoration, storage tanks, industrial equipment |
| Origin | Shandong, China |
Application Suitability
| Industry | Typical Applications |
|---|---|
| Food & Beverage Processing | Hygienic storage tanks, conveyor belts, pasteurization line piping, 304 / 316L coil fabrication |
| Medical & Pharmaceutical | Surgical instrument blanks, sterile equipment housings, clean-room wall panels |
| Architectural Decoration | Elevator interior panels, façade cladding, column covers using 8K mirror and HL hairline finishes |
| Chemical & Petrochemical | Corrosion-resistant pressure vessels, heat exchanger shells, process piping with 316L / 904L / 2205 coils |
| Construction & Infrastructure | Roofing sheets, wall cladding, structural trim for coastal and high-humidity environments |
Why Surface Finish Specification Determines Inspection Rejection on Site
A missing PVC film layer on a BA finish coil can turn a mirror surface into a scratched reject before the container doors even open.
Global procurement teams routinely specify 304 316L stainless steel coil by grade and thickness alone, then discover at the job site that the finish does not match the architectural sample board, or that transit abrasion has ruined the reflective surface. The root cause is almost never the mill — it is the gap between the purchase order and the packing protocol. When BA or 8K coils ship without individual PVC wrapping, the 2B backing paper shifts during ocean roll, and the polished face contacts the steel strapping directly. By the time the container reaches Santos or Jebel Ali, the entire inner wrap is scored. A 304 316L stainless steel coil order that looked correct on paper becomes a total write-off. [NEED_CITE: stainless steel surface finish classification per ASTM A480]
Matching Coil Finish and Grade to Hygienic, Architectural and Corrosive Environments
Selecting the right 304 316L stainless steel coil starts with the service environment, not the price list. For food processing lines and medical equipment, 304 with a 2B or BA finish provides the smooth, non-porous surface required by hygiene codes, while 316L becomes mandatory once chloride exposure enters the picture — dairy pasteurizers, marine galley equipment, or pharmaceutical clean rooms. Architectural projects demand visual consistency across hundreds of square meters; specifying 8K mirror or HL hairline from a single heat lot avoids the shade-band effect that appears when coils from different batches are welded side by side on an elevator lobby wall.
Engineering Compliance and Certification Pathways Across Import Markets
A 304 316L stainless steel coil destined for the EU must carry documentation that satisfies EN 10204 3.1 type inspection certificates, while the same material entering North America is evaluated against ASTM A240 and A480. Middle East EPC contractors typically require both SGS pre-shipment inspection and a certificate of origin legalized by the local chamber of commerce. Missing any single document in this chain does not just delay customs — it can halt the entire project acceptance protocol, because the client’s QA team cannot sign off on material traceability without a heat number that links back to the original mill test. [NEED_CITE: EN 10204 inspection certificate types for metallic products]
Decoding the 300-Series and Duplex Grade Spectrum for Project Engineers
The 304 316L stainless steel coil range spans far beyond the two most-requested grades. 309S and 310S serve high-temperature furnace components where oxidation resistance matters more than formability. 321, stabilized with titanium, resists intergranular corrosion after welding — a critical requirement for exhaust manifolds and aerospace ducting. Moving into the duplex family, 2205 and 2507 deliver roughly double the yield strength of standard austenitic grades while offering superior chloride stress-corrosion cracking resistance, making them the default choice for offshore platform piping and desalination plant heat exchangers. Cold-rolled coils at 0.15–3 mm suit precision stamping and spring applications, while hot-rolled plates at 3–120 mm serve structural and pressure-vessel fabrication. [NEED_CITE: duplex stainless steel pitting resistance equivalent number comparison]
The Hidden Cost of Ordering Stainless Coil Without Finish and Tolerance Clarity
When a purchase order for 304 316L stainless steel coil omits the exact finish code, the supplier defaults to the cheapest available stock — usually 2B. If the project actually required NO.4 satin for a kitchen backsplash or 8K mirror for a hotel lobby column, the material arrives technically correct but commercially useless. Worse, if the thickness tolerance was not contractually pinned to a recognized standard, the coils may arrive at the negative edge of the allowable band. The structural calculation still holds, but the client’s quantity surveyor measures the theoretical weight against the invoice weight and issues a short-shipment claim. Neither scenario reflects mill fraud — both reflect specification gaps that a single well-drafted inquiry would have eliminated. [NEED_CITE: ASTM A480 standard tolerances for stainless steel sheet and coil]
Procurement Confidence Built on Traceability, Certification and Loading Discipline
Every 304 316L stainless steel coil we ship carries a heat number that traces back to our in-house physical and chemical laboratory test results — no third-party relabeling, no certificate swapping. Our 2,800+ specification range means you can consolidate cold-rolled 304 for kitchenware, hot-rolled 316L for chemical tanks, and 2205 duplex for offshore fittings into a single container, eliminating the coordination overhead of managing three separate suppliers. We hold ISO 9001:2015, Lloyd’s Register EU CE, Singapore FPC, and third-party verification from SGS and BV. For BA and 8K finishes, every coil receives an individual PVC film wrap before the waterproof paper layer goes on — a protocol born from watching a São Paulo client reject an entire container of scratched 304 coils because the Atlantic crossing shifted the steel strapping against the mirror face.
Documentation & Compliance
- Mill Test Certificate per EN 10204 3.1 documenting 304 and 316L chemical composition (C, Cr, Ni, Mo) and mechanical properties including tensile strength and elongation
- CE certificate covering stainless steel flat products supplied under EN 10088 and EN 10028 frameworks for EU market entry
- ISO 9001:2015 quality management certificate issued by TUV covering the full cold-rolled and hot-rolled coil production process
- SGS or BV third-party inspection report verifying surface finish grade, thickness tolerance, and packaging integrity before container sealing
- Full material traceability by heat number linking each coil to its original slab cast record and laboratory test data
- Customs documentation package including packing list, bill of lading, and certificate of origin formatted for EU, Middle East, and Southeast Asian import clearance
Packaging, Loading & Delivery
- Cold-rolled 304 316L stainless steel coil at 0.15–3 mm thickness wrapped in waterproof kraft paper with inner plastic film, secured by three steel straps and placed on fumigated wooden pallets
- BA and 8K mirror finish coils individually wrapped in PVC film before outer paper packaging to prevent surface abrasion during ocean transit and container handling
- Hot-rolled 316L and 2205 coil at 3–120 mm thickness bundled with edge protectors and steel strapping, oil-coated for temporary corrosion protection during storage and shipping
- Custom slitting service available for non-standard widths below 1000 mm, with slit edges deburred and re-coiled to customer-specified inner diameter
- Heat number and grade stenciled on each coil ID tag and outer packaging, matching the mill test certificate for on-site QA verification
- FOB, CIF, and DDP shipping options with professional container loading plans optimized for 20ft and 40ft high-cube units, including weight distribution and lashing for heavy hot-rolled plates
Securing Your Quote with Complete Specification and Certification Requirements
Submit your 304 316L stainless steel coil inquiry with grade, finish code, thickness, width, quantity, and destination port — we return a detailed quotation including unit price, production lead time, applicable certification package, and loading plan within hours. For non-standard widths or duplex grades like 2205 and 2507, we provide a custom slitting and rolling feasibility review before you commit. Confirm your required mill test certificate format and third-party inspection scope at the inquiry stage, and we lock those requirements into the contract.
Frequently Asked Questions
Q: What is the difference between 304 and 316L stainless steel coil for food processing applications?
A: 304 offers excellent general corrosion resistance and is suitable for most food contact surfaces, while 316L contains molybdenum for superior resistance to chloride pitting — essential for dairy, seafood processing, and environments where sanitizing agents contain chlorides.
Q: Can you supply 8K mirror finish 304 coil in widths narrower than 1000 mm?
A: Yes, we provide custom slitting from master coils at 1000 mm, 1219 mm, or 1500 mm down to narrow widths, with each slit coil individually PVC-wrapped to protect the mirror surface.
Q: What documentation do you provide for EU customs clearance on stainless steel coil shipments?
A: Each shipment includes an EN 10204 3.1 mill test certificate, CE marking documentation, ISO 9001 quality certificate, packing list, bill of lading, and certificate of origin — all aligned with EU import requirements.
Q: How do you prevent surface damage on BA and 8K finish coils during ocean shipping?
A: Every BA and 8K coil receives individual PVC film wrapping before the waterproof paper layer, combined with pallet mounting and steel strapping with edge protectors to eliminate direct contact between the polished surface and any hard surface during transit.
Q: Do you offer duplex stainless steel coil such as 2205 and 2507 for offshore projects?
A: Yes, our range includes 2205 and 2507 duplex coils in both cold-rolled and hot-rolled conditions, supplied with full chemical and mechanical test reports per ASTM and EN standards.
Get Your 304 316L Stainless Steel Coil Quote with Full Mill Certification
Send your specification sheet — grade, finish, thickness, width, quantity, and destination — and receive a quotation with production timeline and complete documentation package.
Shandong Xin Jiyuan Special Steel Tube Co., Ltd
Tel: +86 531 8573 6315
Mobile / WhatsApp / WeChat: +86 188 5315 7756
Email: admin@sdxjysteel.com
