304 Cold Rolled Stainless Steel Coil
304 Stainless Steel Coil (SUS304 / AISI 304 / 1.4301)
Cold Rolled Stainless Steel Coil Manufacturer | ASTM A240 Certified Factory Supplier
Company Profile
Company Name: SHAANXI JUDE STEEL CO., LTD.,
Business Type: Stainless Steel Coil Manufacturer & Exporter
Factory Location: Room 1704, Unit 1, Jinqiao International Building, Xixian New District, Xi'an, Shaanxi Province, China
Established: 2008
Annual Capacity: 50.000 metric tons
Export Markets: 30+ countries
We are a direct stainless steel cold rolled coil manufacturer with integrated production capability, covering the full process from raw material processing to finished coil export.
Unlike trading companies, we ensure:
- Stable production consistency
- Direct factory pricing
- Full traceability per coil
- Controlled quality from production source
Factory Verification & Proof System
To increase transparency and buyer confidence, we provide full verification support:
Available Verification Methods
- Live factory video inspection (Zoom / WhatsApp)
- On-site factory audit before order confirmation
- Third-party inspection (SGS / BV / Intertek)
- Full heat number traceability system per coil
- EN 10204 3.1 Mill Test Certificate (MTC)
Visual Evidence Available Upon Request
- Production line videos (cold rolling / annealing)
- Coil loading & container inspection photos
- Warehouse stock inspection
- Quality testing lab records
Why Global Buyers Choose Us
Most procurement risks in stainless steel sourcing come from:
Thickness inconsistency
Surface defects (scratches, oxidation spots)
Composition variation between batches
Delivery delay in bulk orders
Our Controlled Manufacturing Advantages
Thickness tolerance control: ±0.02 mm (standard production range)
Surface inspection: 100% coil surface inspection before shipment
Composition stability: Batch-controlled furnace process
Delivery reliability: Scheduled production planning system
Coil traceability: Full heat number tracking system
Manufacturing Capability
Production Lines
- Continuous cold rolling mill system
- Bright annealing line (BA surface stabilization)
- Pickling & passivation system
- Skin-pass finishing mill
- Precision slitting line (custom widths supported)
Quality Control System
- Raw material incoming inspection
- Online laser thickness monitoring
- Surface defect detection system
- Final coil inspection before packaging
Production Performance Data
To ensure consistency and buyer confidence:
Thickness deviation control: ≤ ±0.02 mm
Surface defect rate: ≤ 0.3% (internal QC standard)
On-time delivery rate: ≥ 95%
Coil traceability coverage: 100%
Inspection pass rate before shipment: ≥ 98%
Product Overview
304 stainless steel coil is an austenitic stainless steel widely used in global industrial applications due to its balance of corrosion resistance, formability, and cost efficiency.
Technical Standards
We manufacture strictly under international standards:
ASTM A240
EN 10088-2
JIS G4305
Specification Range
Thickness: 0.3 – 3.0 mm
Width: 1000 / 1219 / 1500 mm (custom available)
Inner Diameter: 508 / 610 mm
Coil Weight: 3 – 25 tons
Chemical Composition (ASTM A240)
|
Element |
Content |
|
Cr |
18.0% – 20.0% |
|
Ni |
8.0% – 10.5% |
|
C |
≤ 0.08% |
|
Mn |
≤ 2.0% |
|
Si |
≤ 1.0% |
Mechanical Properties
Tensile Strength: ≥ 515 MPa
Yield Strength: ≥ 205 MPa
Elongation: ≥ 40%
Hardness: ≤ 90 HRB
Manufacturing Process & Full Traceability
Raw Material Selection
- Cold Rolling
- Bright Annealing
- Pickling & Passivation
- Skin Pass Finishing
- Slitting
- Final Inspection
- Packaging & Shipment
Each coil includes
- Heat number tracking
- Production batch record
- MTC 3.1 test report
- Inspection record file
Quality Assurance System
Testing Equipment
- Spectrometer chemical analysis system
- Tensile strength testing machine
- Laser thickness measurement system
- Surface inspection detection system
Certification & Documentation
- EN 10204 3.1 Mill Test Certificate
- Heat traceability report
- Batch inspection report
- Third-party inspection report (if required)
Real Industrial Applications
Our 304 stainless steel coils are widely used in:
Germany
HVAC ventilation duct systems (industrial buildings)
UAE
Architectural façade and curtain wall systems
Brazil
Commercial kitchen equipment manufacturing
Southeast Asia
Industrial storage tank fabrication
Risk Control for Buyers(Procurement Protection System)
To reduce sourcing risk, we provide:
Pre-shipment live video inspection
Third-party inspection before shipment
Sample confirmation before mass production
Replacement policy for confirmed quality issues
Long-term supply contract support
Packaging & Export Standard (Seaworthy)
To prevent corrosion, water ingress, or mechanical damage during long-distance ocean freight, we utilize a multi-layer protection system:
Inner Layer: Anti-rust/VCI paper wrapping.
Middle Layer: Waterproof PVC protective film.
Outer Layer: Galvanized steel sheet protection with heavy-duty metal strapping.
Base Support: Reinforced wooden or steel pallets tailored for heavy coils.
Container Securing: Anti-movement timber chocking and wire-rope fixing system.
Commercial Trade Terms
Lead Time: 7 – 30 Days (Depending on specification and order volume).
MOQ: Flexible (Small trial orders supported for quality evaluation).
Payment Terms: T/T (30% deposit + 70% balance against BL copy) or 100% Irrevocable L/C at sight.
Trade Terms Available: FOB / CFR / CIF / EXW
Applications
Industrial
- Heat exchangers
- Pressure vessels
- Chemical storage tanks
Food Industry
- Food processing systems
- Dairy equipment
- Kitchen manufacturing systems
Construction
- Elevator panels
- Curtain wall systems
- Roofing materials
Transportation
- Automotive exhaust systems
- Fuel tanks
304 vs Other Stainless Steel Grades
201 Stainless Steel
- Lower corrosion resistance
- Cost-sensitive indoor use
304 Stainless Steel (This Product)
- Balanced performance and cost
- Global industrial standard
316 Stainless Steel
- Higher chloride resistance
- Marine / chemical environments
FAQ
Q: Are you a trading company or a direct factory?
A: We are a direct, verified cold-rolled stainless steel coil manufacturer established in 2008, with an annual capacity of 50,000 tons. You are buying directly from the source.
Q: How do you guarantee that the steel delivered matches the MTC?
A: Every single coil is hard-stamped or labeled with a unique Heat Number. This number links directly to the EN 10204 3.1 Mill Test Certificate (MTC) and our internal raw material smelting records, ensuring 100% foolproof accountability.
Q: Can we arrange a third-party inspection before shipment?
A: Absolutely. We fully cooperate with international inspection agencies such as SGS, Bureau Veritas, Intertek, or any auditor appointed by the buyer. Shipment will only proceed after your approval.
Q: What happens if there is a quality discrepancy upon arrival?
A: We stand behind our products. Every order is backed by our official Procurement Protection System, which includes a formal Replacement Policy for any verified structural or chemical quality issues.
Q: Do you support long-term framework agreements?
A: Yes. For global distributors and large-scale industrial end-users, we offer long-term supply contracts to lock in capacity and ensure stable monthly pricing structures.
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