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SS 304 Coil Price

The processing of SS 304 coil into stainless steel sheets involves uncoiling, leveling, precision cutting, surface protection, and final inspection. Each step directly affects flatness, surface quality, and overall sheet performance.

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SS 304 Coil Price

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Stainless Steel Coil

Stainless Steel Coil/Strips

Stainless Steel Strips

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Product Details

When discussing SS 304 coil price, it is important to understand that the final cost of stainless steel sheets is closely related to the coil-to-sheet processing workflow. Stainless steel coils are not always used directly; they are commonly leveled and cut into flat sheets according to required dimensions. The processing method influences material utilization, surface quality, flatness, and overall production efficiency.

Below is the standard industrial process of converting 304 stainless steel coil into stainless steel sheets.

1. Raw Material Inspection

Before processing begins, the SS 304 coil undergoes inspection:

Verification of material grade (chemical composition certificate).

Surface quality check (scratches, pits, oxidation).

Thickness and width measurement.

Coil weight confirmation.

This ensures the material meets production and customer specifications.

2. Coil Loading and Uncoiling

The coil is mounted onto a decoiler machine.

Process Steps:

Hydraulic loading of the coil onto the mandrel.

Controlled uncoiling to release internal tension.

Gradual feeding into the leveling system.

Proper tension control is critical to prevent surface damage and edge deformation.

3. Leveling and Flattening (Straightening Process)

304 stainless steel coils often contain residual stress due to rolling and coiling. A multi-roll leveling machine is used to:

Eliminate coil memory.

Improve flatness.

Reduce internal stress.

This step is essential to ensure the final stainless steel sheets are flat and suitable for fabrication.

4. Cutting to Length (CTL Process)

After leveling, the material enters a cut-to-length (CTL) machine.

Key Operations:

Precision length measurement using servo control.

Automatic shearing to required sheet size.

Burr-free cutting edges.

Typical sheet sizes may include:

1000 mm × 2000 mm

1219 mm × 2438 mm (4 ft × 8 ft)

1500 mm × 3000 mm

Custom sizes according to order

Dimensional tolerance is strictly controlled to meet industrial standards.

5. Surface Protection

To maintain surface finish quality (2B, BA, No.4, HL, etc.):

Protective PVC film may be applied.

Anti-scratch handling systems are used.

Sheets are stacked with protective paper if required.

This step ensures surface integrity during transport and storage.

6. Inspection and Packaging

Final inspection includes:

Thickness verification.

Length and width measurement.

Surface finish evaluation.

Edge condition check.

After inspection, sheets are:

Stacked on wooden pallets.

Secured with steel straps.

Wrapped with moisture-proof packaging for export.

Key Technical Parameters in Coil-to-Sheet Processing

Parameter	Typical Range
Thickness	0.3 mm – 6.0 mm (cold rolled)
Width	1000 mm – 1500 mm
Length	Custom cut-to-length
Flatness Tolerance	Industry standard leveling tolerance
Surface Finish	2B, BA, No.4, HL