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Coil Feed Line Solutions for Metal Stamping

SUNRUI MACHINE designs and manufactures advanced coil feed lines for metal stamping applications. Our solutions integrate decoiling, straightening, and servo feeding into efficient production systems that improve productivity, feeding accuracy, and material utilization. From compact 3-in-1 coil feed lines to heavy-duty press feeding systems, we provide customized automation solutions for automotive, home appliance, motor lamination, cookware, HVAC, and construction industries. Whether processing mild steel, stainless steel, aluminum, or high-strength steel, our engineering team helps customers select the right coil feeding solution based on material specifications and production requirements.
Coil Feed Line Solutions for Metal Stamping

Applicable material 


Material Thickness: 0.4-4.5m/0.6-6.0mm

Coil width: 20-1300mm  


Coil line configuration

Decoiler straightener machine GL-H

NC servo feeder RNC-B

Mechanical press machine APA/APC

Progressive Die(For optional)

Features of Coil Processing & Feed Lines

SUNRUI MACHINE's Coil Processing & Feed Line is a complete stamping automation solution designed for medium and heavy-gauge metal coil processing. The system integrates a GL-H Decoiler Straightener, RNC-B NC Servo Feeder, and a Mechanical Press into one synchronized production line, delivering stable material handling, precise feeding, and high-efficiency stamping.


Designed for processing 0.4–6.0 mm thick metal coils and widths up to 1300 mm, this solution is ideal for manufacturers producing automotive components, home appliance parts, electrical cabinets, construction hardware, and other precision stamped products.


For applications requiring continuous high-volume production, the system can also be equipped with a Progressive Die to maximize production efficiency, improve dimensional accuracy, and reduce labor costs.


By combining advanced servo feeding technology with reliable coil straightening and automatic press synchronization, SUNRUI MACHINE helps customers reduce material waste, shorten setup time, and achieve consistent, high-quality production.

Key Features


  • Complete automated coil processing solution

  • Suitable for 0.4–6.0 mm thick steel coils

  • Coil widths from 20 mm to 1300 mm

  • High-precision NC servo feeding (±0.15 mm)

  • Stable decoiling and straightening for continuous production

  • Compatible with progressive die stamping

  • Compact line layout for improved factory space utilization

  • PLC-controlled operation with user-friendly HMI

  • Customized configurations available for different production requirements


Main Machine of Coil Processing & Feed Lines

Uncoiler Straightener 2 IN 1 GL-H

Uncoiler Straightener 2 IN 1 GL-H

1. Save workshop`s space

2. With pneumatic pressure on straightener roller and worm gear adjusting, it can achieve presicion straightening performance for many different kind of material.

3. Automatically adjust feeding time according to output speed. Leveler inclines appropriately to reduce feeding loop distance.

4. Constructed with highly rigid structure and designed with a powerful motorized decoiler

5. Manual or hydraulic Decoiler Machine can be selected for inner diameter adjustment,There is wide selection to choose from depending on width and weight of coil.

Servo Feeder Machine RNC-B

Servo Feeder Machine RNC-B

1. RNC is one type smart and easy to operate feeder machine in the market.

2. It can feeds sheet metal coil material width up to 800mm, thickness up to 4.5mm, with max. feeding speed 20m/min.

3. Operating with Computerize Numerical Control by PLC program from MITSUBISHI made in Japan, it can ensure +/-0.01mm high feeding precision.

4. Usually it matches with adjustment signal from the cutting machine or power press machine.

5. Bracket frame is optional according to your requiremetns.

Stamping Press APA/APC

Stamping Press APA/APC

1. Keep the transmission center and machine center in uniformity, guarantee the precision of pressing.

2. In order to guarantee the machine running in stable and smooth, adopts the design of symmetrical boards with balancer.

3. The precision of mold adjusting up to 0.1mm, it's safty, reliable and convenient to adjust it.

4. Crank,gear and connect bar are oxidized hardening and milled, having super comprehensive mechanical performance and durable function.

5. Used reliable high sensitive clutch/brake and international up-to-date twin electromagnetic valve, overloading protector can guarantee the precision of slider running and stop and safe production of the machine.

6. Reasonable structural design, is benefit for automative production and reduce cost,improve efficiency.

7. Advanced design principle, low noise, low consumption, low cost, save energy.

Progressive Die

Progressive Die

1. Used for punching more than one kind of products in the processing process, all kinds of products are widely used in mobile, tooling, daily necessities and other industries.

2. Use universal mold and press to produce large quantities of products, avoiding the shape deviation when multiple molds and presses work at the same time, and better ensuring product quality. Reduce equipment requirements, thereby reducing plant space requirements.

3. Save material more than 10%.

4. Using coil and automatic feeder for production, greatly reducing labor intensity, saving labor costs.

5. Different models can be designed according to different shapes, sizes, patterns and other requirements of customers' products.

Video of Coil Processing & Feed Lines