Executive summary
Our corrugated hose coiling and strapping machine winds double wall pipe straight from the extruder onto a six-arm reel, then straps the finished coil so it holds its shape. Our standard machine coils at 1–60 m/min on two coiling stations, so one coil is strapped and unloaded while the next one winds. Coil size is set by the reel: the standard window is 500–800 mm outside diameter, and larger corrugated pipe gets a larger reel built for the project.
Table of Contents
- How the coiler works
- Why corrugated pipe needs a strapped coil
- Working out coil length
- Two stations and extruder speed
- Standard machine data
- Larger corrugated pipe
- Selection checklist for a corrugated hose coiler
- Engineering FAQ
- Next step
- Related reading
- Sources
How the coiler works
The machine measures the pipe length, cuts the pipe, winds it into a coil, fixes the coil, straps it and moves it out. Every one of those steps is set in the PLC program, so the coil length and the number of straps are stored recipes rather than operator decisions.
The reel has six radial arms. They hold the inside of the coil while it winds, and they close in or open out symmetrically to set the coil’s inside diameter.
The arms hold the double wall pipe in tight layers as the reel turns, so the corrugations nest against each other instead of sliding axially. The strapping arm then ties straps across the coil section while the coil is still clamped in shape on the arms, and only then does the coil discharge onto the roller conveyor. For fully automated packaging areas, this unit integrates directly into downstream systems; our automatic coiler series links the coiler with a strapping unit and a wrapping station to form an uninterrupted coiling, strapping, and stretch wrapping packaging line [manufacturer rating]. A perimeter interlocked mesh fence keeps personnel away from the reel and the strapping arm while they move.
Why corrugated pipe needs a strapped coil
Corrugated pipe acts like a mechanical torsional spring. Once it is cut from the extruder line, an unconstrained coil tries to relieve internal hoop stresses and open up, causing the outer layers to slide off the inner turns. Straps applied radially through the core lock the layers together across the entire coil cross-section, ensuring the coil retains its specified diameter on the pallet, inside shipping containers, and on the installation site.
The straps also establish a uniform, stable handling profile. A tight, concentric coil stacks vertically on pallets without tilting and can roll along handling tracks without unraveling. A loose coil takes up excessive floor space, deforms under its own weight, and presents snagging hazards during warehouse transport.
Working out coil length
Coil length depends on the core dimensions, outside limits, and pipe diameter:
Coil length ≈ turns per layer × number of layers × π × mean coil diameter
- Turns per layer = coil width ÷ pipe OD
- Number of layers = (coil OD − coil ID) ÷ 2 ÷ pipe OD
- Mean coil diameter = (coil OD + coil ID) ÷ 2
Illustrative example for 50 mm outside diameter corrugated pipe:
| Item | Value |
|---|---|
| Coil ID (example) | 400 mm |
| Coil OD (example) | 800 mm |
| Coil width (example) | 300 mm |
| Turns per layer, 300 ÷ 50 | 6 |
| Layers, (800 − 400) ÷ 2 ÷ 50 | 4 |
| Total turns, 6 × 4 | 24 |
| Mean coil diameter, (800 + 400) ÷ 2 | 600 mm (0.6 m) |
| Coil length, 24 × π × 0.6 m | about 45 m |
The reel core diameter (coil ID) must always remain above the pipe’s minimum bending radius. If the core diameter is set too small, inner-wall corrugations experience excessive compression stress and kink during winding. In our engineering workflow, we set the reel ID from your pipe’s physical bending limit first, then fit the coil width and outer diameter around that constraint.
You can also run the formula backwards to size the reel. When a contract specifies 50 m coils of a given pipe diameter, the equation establishes the exact reel expansion stroke and traverse width required for the machine build.
Two stations and extruder speed
The extrusion line runs continuously, meaning the coiler must receive incoming pipe without stopping or causing line backpressure. With two coiling stations, the incoming pipe transfers to the second, empty reel the moment the first coil reaches its target cut length. The completed coil is strapped and ejected while the second reel winds.
At the maximum speed of 60 m/min, the 45 m example coil winds in approximately 45 s. The secondary station therefore has a 45 s operational window to compress the package, cycle the strapping mechanism, collapse the radial arms, and eject the coil onto the outfeed conveyor.
A slower extrusion rate provides a longer strapping window. Conversely, winding short coil lengths at high extrusion rates shortens the available cycle time. If the strapping and ejection cycle cannot finish before the alternate reel fills, the upstream extrusion line is forced to decelerate. Because of this mechanical interlock, coil cut length, strapping count, and extrusion line speed must always be synchronized within the PLC recipe.
Standard machine data
| Item | Hose coiling and strapping machine |
|---|---|
| Coil ID | 350–550 mm |
| Coil OD | 500–800 mm |
| Coil width | 150–300 mm |
| Coil weight | 5–35 kg |
| Coiling speed | 1–60 m/min |
| Coiling stations | 2 |
| Power consumption | 4.5 kW |
| Strapping band thickness | 0.6–0.75 mm |
| Control | PLC: length, cutting, coiling, strapping, unloading |
The machine data above matches the published engineering specification for the hose coiling and strapping machine. Standard utility connections require a power supply of 380V 60Hz 3P, and the integrated strapping head is configured for strapping band widths of 12–13 mm [manufacturer rating].
Larger corrugated pipe
Heavy-duty double wall corrugated drainage and conduit pipes frequently exceed standard packaging windows. For these profiles, the reel assembly, radial arm stroke and strapping head travel are custom-engineered to project requirements. Using the coil length formula with your pipe profile and coil targets, our design team builds the reel to suit.
For fully integrated operations, our automatic corrugated coiler platform (such as the FCL-H800 system) connects directly with upstream haul-offs and downstream automated strapping and orbital stretch wrappers into a complete turnkey packaging line [manufacturer rating].
Safety compliance is engineered around regional market requirements. For CE jurisdictions, risk assessment is conducted under ISO 12100, and mechanical guarding, nip-point protection, and strapping head interlocks meet EN 415-10 safety standards for packaging machinery.
Selection checklist for a corrugated hose coiler
- Pipe profile: Outside diameter (OD), inside diameter (ID), and wall structure (single wall or structured double wall).
- Coil length target: Standard cut length required per coil package (e.g., 25 m, 50 m, 100 m).
- Dimensional boundaries: Minimum allowable coil ID (above pipe minimum bend radius), maximum allowable coil OD, and target coil width.
- Extruder line speed: Continuous outfeed speed in m/min (high/low operational ranges).
- Strapping specification: number and position of straps per coil.
- Coil mass and logistics: maximum finished coil weight (kg) and downstream handling method (manual pickup, gravity roller, or powered driven conveyor).
- Secondary packaging: Requirement for inline stretch film wrapping or protective bag sleeving following the strapping station.
Engineering FAQ
Q: How fast does the coiler run? A: Our standard machine coils at 1–60 m/min and follows the extruder line speed.
Q: Why are two coiling stations necessary? A: Two stations eliminate extrusion downtime. One reel winds incoming pipe while the second reel straps, collapses, and ejects the finished coil.
Q: How do I work out the coil length? A: Multiply turns per layer by the number of radial layers, then multiply by π and the mean coil diameter. A 400 mm ID × 800 mm OD coil with a 300 mm width holding 50 mm OD pipe yields roughly 45 m.
Q: What coil sizes does the standard machine make? A: The standard reel window handles coil IDs of 350–550 mm, ODs of 500–800 mm, widths of 150–300 mm, and total bundle weights between 5 and 35 kg.
Q: Can it coil larger double wall pipe? A: Yes. For pipe diameters and bundle masses exceeding the standard envelope, we engineer custom frames, extended six-arm reels, and heavy-duty strapping arches matched to your product dimensions.
Next step
We plan and configure your corrugated hose coiling and strapping line in three direct steps:
- Submit your layout drawing along with pipe outer dimensions, target coil lengths, and maximum extruder output speed to info@fhopepack.com.
- Receive a proposal within 48 hours, including reel sizing validation, machine footprint drawings, and a detailed strapping cycle analysis.
- Book a technical site survey to check the extruder outfeed and the coil handling area.
Related reading
- Hose coiling and strapping machine
- Corrugated hose packing machine
- Video: hose wrapping machine and HDPE pipe coil packing
Sources
- Standard machine data and PLC functions: hose coiling and strapping machine page
- Automated coiling, strapping, and wrapping systems: Automatic Coiler FCL-H800 page
- Machine in action: our corrugated hose coiling video on YouTube
- Coil length and timing examples: our worked examples, illustrative engineering values
- International safety standards: ISO 12100:2010 (Safety of machinery — General principles for design), EN 415-10:2014 (Safety of packaging machines — General requirements)
Last reviewed: 2026-10-04
