QINGDAO, China — September 25, 2026 — SunAura Machinery has expanded its ring coil and rotary arm wrapping machine line with new models covering horizontal and vertical coil wrapping, rotary arm pallet wrapping, and gantry frame wrapping. The expanded range serves the steel, aluminum, cable, wire, pipe, and building materials industries — where products must be wrapped tightly and protected before shipping.
The expansion adds to SunAura’s existing pallet wrapping line, which previously focused on turntable and semi-automatic wrappers. The new models handle the heavy, cylindrical, and elongated loads that turntable wrappers cannot — steel coils, aluminum coils, cable reels, pipe bundles, and tall unstable pallets. With the new lineup, the company now covers the full wrapping spectrum from light retail pallets to 8-ton steel coils on a single product platform.
New Model Range
| Model | Type | Max Load | Max Diameter/Length | Typical Application |
|---|---|---|---|---|
| RC-H-S | Ring coil wrapper, horizontal, small | 2,000 kg | 800mm coil OD | Small steel and aluminum coils |
| RC-H-L | Ring coil wrapper, horizontal, large | 8,000 kg | 1,600mm coil OD | Large steel coils, cable reels |
| RC-V-S | Ring coil wrapper, vertical, small | 1,500 kg | 800mm coil OD | Vertical coils, ring-shaped products |
| RC-V-L | Ring coil wrapper, vertical, large | 5,000 kg | 1,500mm coil OD | Large vertical coils, drums |
| RA-2000 | Rotary arm pallet wrapper | 2,000 kg | 2,400mm pallet height | Tall and unstable pallet loads |
| GF-3000 | Gantry frame wrapper | 3,000 kg | 3,000mm length | Long products, pipe bundles, profiles |
Why Ring Coil Wrapping Matters
Steel and aluminum coils are among the most challenging loads to protect in transit. A bare coil edges against adjacent coils, rusts from moisture ingress, and shifts under vibration. The traditional alternative — hand wrapping with paper and film — is slow, inconsistent, and labor-intensive.
Ring coil wrappers apply stretch film or VCI (Vapor Corrosion Inhibitor) film in a tight spiral around the coil’s circumference, protecting the entire surface. The result is a professional, export-ready coil that resists moisture, scratches, and edge damage. For steel mills and coil processors shipping to 100+ countries, coil wrapping is the difference between a satisfied customer and a damage claim.
Horizontal vs. Vertical Ring Wrappers
The two main ring wrapper configurations differ in coil orientation:
Horizontal ring wrappers (RC-H series): the coil lies flat (axis horizontal), and the wrapping ring rotates around the coil’s circumference. The film is applied to the outer diameter and edges of the coil in one continuous spiral. Horizontal wrappers handle the largest coils and are the standard choice for steel mills.
Vertical ring wrappers (RC-V series): the coil stands on its edge (axis vertical), and the wrapping ring travels up and down around the coil. Vertical wrappers are used for coils that will be stored or stacked on edge, and for ring-shaped products like tires and large washers.
The choice depends on your coil handling system. If coils move on horizontal conveyors (eye horizontal), a horizontal wrapper integrates directly. If coils are stored and shipped eye vertical, a vertical wrapper matches your material flow.
Rotary Arm Pallet Wrapper
The RA-2000 rotary arm pallet wrapper represents a different approach to pallet wrapping. Instead of rotating the pallet on a turntable, the film carriage rotates around the stationary pallet on a swinging arm. This is the right choice when:
- The pallet is too heavy for a turntable to rotate reliably (2,000kg+)
- The load is tall and unstable — rotating it would cause tipping
- The pallet is already on a conveyor and cannot be lifted onto a turntable
- The line requires continuous pallet flow without stopping
Rotary arm wrappers run 60–120 pallets per hour and integrate directly into conveyorized lines. They are the standard choice for high-volume distribution centers, food plants, and beverage warehouses. Our rotary arm model handles pallets up to 2,000kg and 2,400mm height with automatic top platen option for unstable loads.
Gantry Frame Wrapper for Long Products
The GF-3000 gantry frame wrapper handles long products that neither ring wrappers nor pallet wrappers can cover — pipe bundles, profiles, bars, and lumber. The product passes through a gantry frame while the film ring travels along the length, applying a spiral wrap.
Best for:
- Pipe and tube bundles up to 3,000mm length (extendable)
- Aluminum and steel profiles
- Lumber and building materials
- Products requiring full-length weather protection
Gantry wrappers are often paired with conveyors that feed the product through the frame. For long products, the gantry replaces manual wrapping entirely — one operator monitors the machine while film, paper, and VCI options are applied automatically.
Film Options for Coil and Long-Product Wrapping
| Film Type | Application | Benefit |
|---|---|---|
| Stretch film (PE) | Standard coil wrapping | Low cost, moisture protection |
| VCI film | Steel coils, machined parts | Corrosion protection for 12+ months |
| Paper interleaving | Coil edges, high-value coils | Scratch protection, edge protection |
| Laminated film | Export coils, harsh shipping | Combined moisture + scratch protection |
VCI film is the premium option for steel exporters — it releases corrosion-inhibiting vapor that protects the coil surface even where the film does not touch. For coils shipped overseas, VCI film is often specified by the customer or by export insurance requirements.
Market Context: Coil Wrapping Demand in Steel and Aluminum Industries
The expansion responds to growing demand from steel mills, aluminum producers, and metal processors in Asia, the Middle East, and Eastern Europe. Global steel trade has grown steadily, with more coils shipped across borders than ever before. Each shipment requires professional wrapping to meet buyer specifications — and increasingly, buyers specify machine-wrapped coils with VCI film in their purchase contracts.
For steel mills, the economics of coil wrapping are straightforward: a manual wrapping station takes 15–20 minutes per coil with 2–3 operators, while a ring wrapper completes the same coil in 2–4 minutes with one operator monitoring. At 50 coils per day, the machine recovers 8–10 labor hours per day. The payback period for a coil wrapper is typically 12–18 months for mills wrapping 30+ coils daily.
Aluminum producers face an additional challenge: aluminum coils are softer than steel and more susceptible to edge damage and scratching. The paper interleaving option on SunAura ring wrappers applies protective paper to the coil edges before film wrapping — a feature aluminum processors specifically request to prevent edge dents during transport.
Customer Applications and Early Adopters
Several customers have already installed pre-production versions of the new coil and rotary arm wrappers:
A steel service center in Turkey uses the RC-H-L horizontal wrapper for 1,200–1,500mm coils. They report wrapping time dropped from 18 minutes per coil (manual) to 3.5 minutes, and their export damage claims from coil edge rust fell by more than half after switching to VCI film.
A cable manufacturer in the United Arab Emirates uses the RC-V-L vertical wrapper for cable reels up to 1,200mm diameter. The wrapper applies film around the reel circumference while the reel rotates on its edge, protecting the cable from dust and moisture during desert transport.
A beverage distribution center in Southeast Asia installed the RA-2000 rotary arm wrapper on a conveyorized pallet line. The wrapper processes 90 pallets per hour without an operator, replacing a turntable wrapper that required two operators and could not handle tall pallet stacks.
Buying Advice: Choosing the Right Wrapper for Your Load
When comparing wrapper quotes, focus on these factors:
Load characteristics first: measure your heaviest coil or pallet, tallest load, and longest product. Turntable wrappers handle stable loads under 1,500kg; rotary arm wrappers handle heavy and unstable loads; ring wrappers handle coils; gantry wrappers handle long products. Match the machine type to your load before comparing prices.
Film and material options: confirm the machine handles your film type — standard stretch film, VCI film, or paper interleaving. Some wrappers cannot feed paper interleaving or VCI film reliably. If you export steel, specify VCI film capability from the start.
Integration requirements: if the wrapper connects to existing conveyors, confirm the mounting height and speed match your line. Ask for the conveyor height range and speed range in the quotation.
Sample test before purchase: send your actual coil or pallet to the supplier for a test wrap. Verify film tension, wrap coverage, and cycle time with your real product. A test run with a representative coil prevents months of post-delivery adjustment.
Maintenance and Support
All coil and rotary arm wrappers ship with a complete support package:
- Factory acceptance testing with customer coil or pallet samples
- On-site installation and operator training
- 12-month parts warranty
- Spare parts kit including film carriage rollers, stretch belts, and bearings
- Remote diagnostics via video call
- CE certification documentation for export
The film carriage rollers and stretch belts are the primary wear items — they last 6–12 months with daily use. SunAura stocks these parts in the Qingdao warehouse and ships internationally within 48 hours. A well-maintained wrapper lasts 10–15 years with basic preventive care.
For mills and processors running continuous two-shift operations, SunAura offers a preventive maintenance contract that schedules quarterly inspections and replaces wear items before they fail — reducing unplanned downtime to near zero.
Frequently Asked Questions
How long does it take to wrap a coil?
A standard steel coil (1,200mm OD) takes 2–4 minutes on a horizontal ring wrapper, including film loading and coil positioning. Larger coils take 4–6 minutes. The wrapper runs continuously — the operator positions the next coil while the machine wraps the current one.
Can the machine wrap different coil sizes without changeover?
Yes. The wrapping ring is adjustable for coil OD, and the film tension is automatically adjusted by the control system. Changing from an 800mm coil to a 1,600mm coil takes about 5 minutes — the operator adjusts the ring position and loads the appropriate film width. Recipe memory stores settings for repeat sizes.
What is the difference between stretch film and VCI film?
Stretch film provides mechanical protection — it holds the coil together and blocks moisture. VCI film adds chemical protection: it releases corrosion-inhibiting vapor that prevents rust on the metal surface. For domestic shipments, stretch film is sufficient. For export shipments, VCI film is recommended — many steel buyers specify it in their purchase contracts.
How much does a ring coil wrapper cost?
Small vertical ring wrappers start at $15,000–$25,000. Horizontal coil wrappers range from $25,000 to $60,000 depending on load capacity. Rotary arm pallet wrappers run $20,000–$45,000. Gantry frame wrappers start at $30,000. Contact our SunAura sales team for a quote based on your coil size, weight, and throughput.
Can ring wrappers integrate with existing coil handling lines?
Yes. The wrappers are designed to integrate with coil conveyors, walking-beam systems, and overhead cranes. Standard conveyor height is adjustable to match your existing line. For complete coil packaging systems, our engineers design the wrapper into your material flow with infeed and outfeed conveyors.
Availability and Support
All new coil, rotary arm, and gantry wrapper models are available for ordering. Standard configurations ship in 3–4 weeks. Custom conveyor integration has 6–8 week lead times. Each system includes:
- Factory acceptance testing with customer product samples
- On-site installation and operator training
- 12-month parts warranty
- Remote diagnostics capability
- CE certification documentation
For lighter pallet loads, see our pallet wrapping machine buying guide. For tray packaging applications, explore our thermoforming machine guide.
For complete end-of-line solutions, coil and pallet wrappers integrate with our conveyor systems and turnkey packaging line solutions. To request a quote or schedule a factory demonstration, contact the SunAura sales team.
About SunAura Machinery
SunAura Machinery is a packaging equipment manufacturer based in Qingdao, China. The company’s wrapping product line now includes turntable pallet wrappers, semi-automatic pallet wrappers, rotary arm wrappers, gantry frame wrappers, horizontal and vertical ring coil wrappers, and top-press models. All equipment is CE certified and exported to 100+ countries, with factory-direct pricing, lifetime technical support, and a 48-hour international spare parts network.
Editorial note: Specifications are subject to change without notice. Contact SunAura Machinery for current configuration options.