Description
Direct Mill Supply — Full material traceability from our own production lines to your warehouse.
Technical Specifications
| Parameter | Value |
|---|---|
| Designation | 304 316 430 Series Stainless Steel Coil |
| Product Type | Stainless Steel Coil |
| Steel Grade | 304, 316, 430 |
| Section Shape | Coil / Roll |
| Size Range (Width) | 1000 mm, 1219 mm, 1500 mm |
| Thickness | 0.2 mm – 3 mm |
| Technique | Cold Rolled |
| Surface Treatment | 2B Finish |
| Application | Fabrication / Industrial components / Decorative and architectural applications / Kitchen and food processing equipment |
Application Suitability
| Industry | Typical Applications |
|---|---|
| Industrial Fabrication | Pressure vessel shells, chemical tank liners, conveyor belt components |
| Architectural & Decorative | Wall cladding panels, elevator interior panels, column covers |
| Food & Beverage Processing | Mixing tanks, food conveyor surfaces, commercial kitchen equipment |
| General Manufacturing | Stamped brackets, formed enclosures, welded assemblies |
Surface Finish Consistency Decides Whether Your Coil Gets Accepted on Site
A single roller mark across a 2B finish coil can trigger a full container rejection.
Buyers sourcing a 304 316 430 stainless steel coil supplier overseas have no way to inspect surface quality before shipment. When the finish is inconsistent — streaks, roller impressions, or edge wave — the downstream fabricator discovers the defect only after uncoiling and slitting. By then, the ocean freight and customs duties are already sunk costs. Early in my career, I shipped a batch of BA finish coils to Southeast Asia without personally verifying the roller condition before winding. The customer opened the container, saw mirror-surface streaks across every coil, and returned the entire shipment. The sea freight insurance claim alone cost a small fortune. That lesson shaped how every coil leaves our mill today. [NEED_CITE: stainless steel surface finish inspection standards for cold rolled coils]
Matching Grade Selection to Corrosion Environment and Forming Requirements
Choosing between 304, 316, and 430 is not just a cost calculation — it determines whether the fabricated component survives its service environment. For a 304 316 430 stainless steel coil supplier operating from a vertically integrated mill, grade availability means the buyer does not need to split orders across multiple sources. Our own production lines cover all three grades in 2B finish, widths from 1000 mm to 1500 mm, and thickness from 0.2 mm to 3 mm. When an architectural project requires 430 for interior decorative panels and 316 for exterior coastal cladding on the same building, both grades ship from one material lot with unified certification.
Engineering Compliance and Certification for International Procurement
Stainless steel coils destined for food processing equipment must meet FDA-compliant material requirements, while architectural panels shipped to the EU need documentation aligned with EN standards. A 304 316 430 stainless steel coil supplier providing EN 10204 3.1 mill test certificates ensures that chemical composition and mechanical data accompany every coil. For projects requiring third-party verification, SGS or BV inspection can be arranged at the mill before loading. This documentation chain — from heat number traceability through to final dimensional and surface inspection reports — is what separates a compliant delivery from a customs hold. [NEED_CITE: EN 10204 inspection certificate types for metallic products]
Understanding the Three Grades: 304, 316, and 430
Grade 304 is the workhorse austenitic stainless steel, offering balanced corrosion resistance and formability for general fabrication and food contact surfaces. Grade 316 adds molybdenum to the austenitic structure, providing superior resistance to chloride-induced pitting — essential for coastal architectural applications and chemical processing environments. Grade 430 is a ferritic stainless steel with lower nickel content, making it cost-effective for interior decorative applications where extreme corrosion resistance is not required. The 2B finish produced through cold rolling and bright annealing delivers a smooth, reflective surface suitable for both further polishing and direct-use applications. Thickness tolerance control across the 0.2 mm to 3 mm range ensures consistent forming behavior regardless of whether the coil is being deep-drawn into a kitchen sink or slit into narrow strips for gasket production.
Hidden Costs of Sourcing Without Verified Material Origin
When a buyer cannot trace a stainless steel coil back to its original heat number, the risk extends beyond surface defects. Off-spec chemical composition may pass visual inspection but fail corrosion testing months after installation — particularly dangerous in food processing or marine environments. Missing or forged mill test certificates lead to rejected shipments at destination ports, while inconsistent thickness tolerance causes die damage during stamping and forming. Engineering specifications for food-grade or architectural stainless steel reference recognized standards, and procurement without proper certification documentation exposes the project to liability and rework costs that far exceed the initial material price difference. [NEED_CITE: material traceability requirements for stainless steel in food processing equipment]
Why Buyers Source Stainless Steel Coils From Our Mill
Our production facility operates dedicated cold rolling lines for stainless steel coil, meaning every order — whether 304 for kitchen equipment or 316 for chemical tanks — rolls from our own slab inventory. This vertical integration eliminates the material sourcing gap that occurs when a trader buys from one mill and sells to you without quality oversight. With over 2,800 specifications in our raw material range, we maintain stock across the three most-requested grades in all standard widths. Each coil carries a heat number that traces back through our production records, and our in-house laboratory generates mill test certificates documenting chemical composition for every batch. For buyers requiring third-party validation, we coordinate SGS or BV inspections at our facility before the coil is packed. Custom slitting to non-standard widths and cut-to-length services are available for projects that need ready-to-press blanks rather than full coils.
Documentation & Compliance
- Mill test certificate (EN 10204 3.1) documenting 304, 316, and 430 chemical composition including carbon, chromium, nickel, and molybdenum content per grade specification
- Material traceability report linking each coil to its original heat number and production batch record
- ISO 9001 quality management system certificate covering the full cold rolling and annealing process
- SGS or BV third-party inspection report available upon request, covering dimensional tolerance, surface finish, and chemical verification
- Certificate of origin and commercial invoice prepared for destination-country customs clearance requirements
Packaging, Loading & Delivery
- Coils packed with inner plastic wrapping and outer steel sheet protection to prevent 2B finish damage from moisture and contact scratches during ocean transit
- Steel strip bundling with edge protectors applied to 1500 mm width coils to prevent edge wave deformation under container stacking pressure
- Heat number and grade identification clearly marked on each coil ID tag and outer packaging for warehouse receiving verification
- Custom slitting widths available in 1000 mm, 1219 mm, and 1500 mm standard options, with non-standard widths produced to buyer specification
- Container loading plans optimized for 20ft and 40ft units based on coil weight and diameter, with wooden cradles preventing coil movement during shipping
- FOB, CIF, and DDP terms available with full export documentation support for destination port clearance
Start Your Procurement With Drawings and Grade Requirements
Share your project specifications — including preferred grade (304, 316, or 430), width, thickness, surface finish, and quantity — and our team responds within one working day with a detailed quotation covering material cost, slitting services, packaging, and shipping. If your project requires non-standard widths or specific tolerance requirements, we provide a technical assessment of feasibility before you commit. All quotations include the mill test certificate scope and third-party inspection options so your procurement team can verify compliance documentation upfront.
Frequently Asked Questions
Q: What is the difference between 2B, BA, and No.1 surface finishes?
A: 2B finish is produced through cold rolling followed by bright annealing, resulting in a smooth semi-reflective surface ideal for further processing or direct architectural use. BA (bright annealed) offers higher reflectivity with a mirror-like appearance. No.1 finish is hot-rolled and annealed, producing a matte surface typically used for industrial applications where appearance is secondary.
Q: Can you slit coils to custom widths outside the standard 1000/1219/1500 mm options?
A: Yes. Our slitting lines can process 304, 316, and 430 coils to custom widths based on your downstream fabrication requirements. Minimum slit width and tolerance depend on the coil thickness, and we confirm feasibility during the quotation stage.
Q: What material certification do you provide with each coil shipment?
A: Every coil ships with an EN 10204 3.1 mill test certificate documenting chemical composition and production heat number. Third-party inspection reports from SGS or BV are available for projects requiring independent verification.
Q: How do you ensure thickness tolerance across the 0.2 mm to 3 mm range?
A: Our cold rolling mills use automated gauge control systems that monitor and adjust thickness in real time during production. Each coil undergoes dimensional inspection before packing, and the mill test certificate includes thickness measurement data.
Q: What is the typical lead time for a standard coil order?
A: Lead time depends on grade, thickness, and quantity. Standard grades in stock widths typically ship within typical production lead times after order confirmation and deposit receipt. We confirm the specific schedule during quotation.
Request a Quotation With Mill Test Certificate
Send your grade, width, thickness, and quantity requirements to receive a detailed quotation with full material certification documentation.
Shandong Xin Jiyuan Special Steel Tube Co., Ltd
Tel: +86 531 8573 6315
Mobile/WhatsApp/WeChat: +86 188 5315 7756
Email: admin@xjystructure.com
