Cold Rolled (CR) Steel Slitting & Cut to Length Lines
Cold rolled steel is bought for its surface finish and dimensional precision — so the processing line must preserve both. CR and CRCA coils go into visible automotive panels, appliance bodies, barrels and precision stampings where a rub mark or width variation is a rejection.
CR slitting lines from Friend Engineering Works are our highest-precision configuration: fine knife clearances for thin gauge, gentle strip handling, and width tolerance of ±0.1mm. We have supplied CR lines to steel service centers, drum manufacturers and automotive ancillaries across India since 1994.
CR Line Configuration
| Parameter | CR Configuration |
|---|---|
| Thickness range | 0.10mm – 3mm |
| Coil width | Up to 2000mm |
| Coil weight | Up to 40 tonnes |
| Width tolerance | ±0.1mm |
| Line speed | Up to 150 m/min |
| Surface handling | Covered rolls, clean strip path, felt pads |
Why Thin-Gauge CR Needs a Precision Head
At 0.3mm and below, slitting quality is decided by knife clearance measured in hundredths of a millimetre, arbor deflection, and strip tension stability. A heavy HR-style head cannot hold these settings. Our CR slitter heads use precision-ground arbors, close bearing spacing and fine clearance adjustment so edge camber and burr stay within stamping-grade limits.
Typical CR Applications
- Automotive stampings and body components
- Appliance panels (washing machines, refrigerators)
- Steel drums and barrels
- Electrical panel enclosures
- Precision tubes and general engineering strip
Recommended Equipment
- Slitting Line — Friend Engineering Works slitting lines are designed to ensure the highest standards of quality and productivity while processing different materials.
- Cut to Length Line — We manufacture advanced Cut to Length Lines for uncoiling, straightening, gauging, cross-cutting to length, and stacking work.
- Straightening Machine — Our straightening machines use multiple precision rollers to achieve flatness in metal sheets and strips.
Frequently Asked Questions
What is the difference between a CR and HR slitting line?
CR lines handle thinner, smoother material (0.10–3mm) and are built around precision and surface protection: fine knife clearance, covered rolls, tight tension control. HR lines handle 1.5–10mm hot rolled coil and are built around force: heavier frames, higher-torque drives, robust arbors and scale handling. See our HR steel page for the heavy-gauge configuration.
What width tolerance can I expect on slit CR strip?
±0.1mm on width is our standard for CR slitting lines, with burr-free edges suitable for stamping and tube making. Tighter tolerances can be discussed for specific applications.
Can your CR lines handle CRCA for appliance panels?
Yes. CRCA (cold rolled close annealed) for appliance and automotive skin panels is the classic duty for our CR configuration — the covered-roll strip path and interleaving provisions keep the surface stamping-grade.