Copyright © Qingdao Wanguo Sanchuan Fiber Technology Co., Ltd
Vacuum Infusion Spiral Tube is a resin feed and distribution auxiliary material designed for vacuum infusion,VARTM,and composite manufacturing processes. Its open spiral structure creates a continuous resin flow channel under vacuum pressure,helping distribute resin quickly and uniformly across composite laminates while improving infusion efficiency and process consistency. Featuring good flexibility,resin flow performance,easy positioning,and reliable processing characteristics,it is widely used for wind turbine blades,marine and yacht structures,aerospace components,automotive composites,FRP products,and other large composite structures. Available in various materials,inner diameters,outer diameters,spiral configurations,lengths,and customized specifications for different resin flow and infusion requirements.
Vacuum Infusion Spiral Tube for Resin Feed & Composite Manufacturing
Vacuum Infusion Spiral Tube is a flexible resin-distribution consumable used to create low-resistance resin-feed or vacuum channels during vacuum infusion,L-RTM,and other composite molding processes. Its open spiral structure allows resin or air to travel along the length of the tube while remaining easy to position around mold edges and large composite parts. The current product family includes 10 mm,12 mm,and 18 mm inner-diameter options with wall thicknesses of 0.9 mm or 1.3 mm,a listed maximum service temperature of 100°C,and standard 100 m rolls. Typical applications include wind turbine blades,marine composites,FRP panels,automotive parts,and large fiberglass or carbon-fiber infusion structures.
Vacuum Infusion Spiral Tube Specifications
| Property | Representative Specification |
| Product Type | Vacuum Infusion Spiral Tube / Resin Feed Spiral Tube |
| Structure | Open Spiral Tubing |
| Material | High-Temperature Resistant Plastic |
| Inner Diameter | 10 mm / 12 mm / 18 mm |
| Wall Thickness | 0.9 mm / 1.3 mm |
| Color | White |
| Maximum Listed Service Temperature | 100°C |
| Standard Roll Length | 100 m |
| Core Function | Resin Feed / Resin Distribution / Vacuum Channel |
| Main Process | Vacuum Infusion / L-RTM |
| Main Applications | Wind Blades / Marine / FRP / Automotive Composites |
| Customization | Roll Length / Packaging Subject to Confirmation |
Exact polymer composition,temperature capability,diameter tolerance,and chemical compatibility should be confirmed for the selected production grade.
Key Advantages of Vacuum Infusion Spiral Tube
1. Creates a Low-Resistance Resin Feed Channel
The primary function of spiral tubing is to provide an open pathway through which resin can travel during composite infusion.
It can be positioned along:
Resin inlet lines
Mold edges
Large laminate zones
Distribution points
Selected vacuum channels
The spiral opening allows resin to exit progressively along the tube rather than only at one point.
2. Supports Controlled Resin Distribution
When combined with a properly designed infusion layout,spiral tube can help distribute resin into flow media or directly toward selected laminate zones.
It can support:
More predictable resin introduction
Long resin-feed lines
Multiple feed zones
Large-area infusion
Controlled resin-front development
The spiral tube itself does not guarantee uniform impregnation.
3. Suitable for Vacuum Infusion
Vacuum infusion is the strongest and most relevant application for this product.
The tube can be integrated into a vacuum-infusion system together with:
Flow media
Peel ply
Release film
Vacuum bagging film
Sealant tape
Resin hose
Vacuum hose
Its exact position depends on the infusion strategy.
4. Suitable for L-RTM Processing
The current source also lists L-RTM as a main process.
Spiral tubing can be used as an auxiliary resin-distribution or vacuum channel where the mold design requires an external or perimeter flow path.
The exact configuration should be matched to the L-RTM mold architecture.
5. Three Inner Diameter Options
The current available inner diameters are: 10 mm,12 mm,and 18 mm.
Different diameters can be selected according to:
Resin-flow demand
Part size
Feed-line length
Resin viscosity
Infusion strategy
Larger diameter does not automatically mean better infusion performance.
6. Flexible Installation
Spiral tubing can be bent and positioned around:
Curved mold edges
Long panel sections
Blade profiles
Boat hull geometry
Complex composite molds
Its flexibility can simplify installation compared with rigid distribution channels.
7. Easy Cutting
The tube can be cut to the required length during bagging preparation.
This supports:
Custom resin-feed layouts
Multiple inlet zones
Local vacuum channels
Large-part manufacturing
Cut ends should be positioned carefully to avoid damaging the vacuum bag.
8. Open Spiral Structure
The spiral geometry creates continuous openings along the tube length.
These openings allow resin or air to move between the tube and surrounding process layers.
This makes spiral tubing different from closed-wall resin hose.
9. 100°C Listed Temperature Capability
The current listed maximum service temperature is: 100°C.
This makes the product relevant to many room-temperature and moderate-temperature composite infusion processes.
For cure cycles approaching this temperature,the exact grade-specific thermal capability should be confirmed.
10. Standard 100 m Roll Format
The current standard roll length is: 100 m.
Long rolls are useful for:
Wind blade production
Marine molds
Large FRP structures
Continuous composite manufacturing
High-volume infusion operations
Technical Specifications by Grade
| Model | Inner Diameter | Wall Thickness | Color | Max. Listed Service Temperature | Package |
| SWP10 | 10 mm | 0.9 mm | White | 100°C | 100 m/roll |
| SWP12 | 12 mm | 0.9 mm | White | 100°C | 100 m/roll |
| SWP18 | 18 mm | 1.3 mm | White | 100°C | 100 m/roll |
The appropriate diameter should be selected according to resin viscosity,required flow rate,feed-line length,and composite-part dimensions.
SWP10 Vacuum Infusion Spiral Tube
SWP10 is the smallest listed grade.
The inner diameter is: 10 mm.
The listed wall thickness is: 0.9 mm.
The listed maximum service temperature is: 100°C.
The standard packaging is: 100 m/roll.
Potential applications include:
Small and medium composite parts
Local resin-feed channels
Narrow mold edges
General FRP infusion
Prototype composite manufacturing
SWP12 Vacuum Infusion Spiral Tube
SWP12 provides a slightly larger resin-flow channel.
The inner diameter is: 12 mm.
The listed wall thickness is: 0.9 mm.
The listed maximum service temperature is: 100°C.
The standard packaging is: 100 m/roll.
Potential applications include:
General vacuum infusion
Marine components
Composite panels
Medium-size fiberglass structures
Industrial FRP parts
SWP18 Vacuum Infusion Spiral Tube
SWP18 is the largest listed grade.
The inner diameter is: 18 mm.
The listed wall thickness is: 1.3 mm.
The listed maximum service temperature is: 100°C.
The standard packaging is: 100 m/roll.
This grade may be considered for:
Large composite parts
Wind turbine blade infusion
Long resin-feed channels
Large marine structures
Higher resin-flow demand
Actual flow performance should still be verified using the intended resin and infusion layout.
Vacuum Infusion Spiral Tube for Resin Feeding
One of the most common uses of spiral tube is as a resin-feed distribution channel.
During infusion,resin enters the spiral tube and can leave through the continuous openings along its length.
This helps introduce resin into:
Flow media
Reinforcement edges
Distribution zones
Large laminate areas
The position and length of the tube influence the resin-front shape.
Vacuum Infusion Spiral Tube for Vacuum Lines
Spiral tubing can also be used as a vacuum-distribution channel in selected infusion layouts.
When used on the vacuum side,it can help distribute suction across a longer section of the laminate.
The tube should be positioned so that resin does not reach the vacuum system prematurely.
A resin trap may also be required.
Spiral Tube for Wind Turbine Blade Infusion
Wind turbine blade manufacturing is a strong B2B application for this product.
Large blades can require long resin-feed and vacuum-distribution zones across:
Blade shells
Spar caps
Shear-web areas
Root sections
Structural reinforcement zones
Spiral tubing can be integrated into the feed-line layout to support long-distance resin distribution.
Important selection factors include:
Blade length
Resin viscosity
Feed spacing
Vacuum position
Flow-media layout
Cure temperature
Spiral Tube for Marine Vacuum Infusion
Marine manufacturers can use spiral tubing during infusion of:
Boat hulls
Decks
Bulkheads
Sandwich panels
Structural marine components
Long curved mold edges are particularly well suited to flexible spiral tubing.
The appropriate diameter should be selected according to the size of the marine part and resin-flow demand.
Spiral Tube for Fiberglass Composites
Fiberglass infusion is a major application direction.
The tubing can be used with reinforcement systems such as:
Woven roving
Biaxial fiberglass
Multiaxial fabrics
Stitched fabrics
Core structures
Different reinforcement architectures can significantly change resin-flow resistance.
Spiral Tube for Carbon Fiber Composites
Selected carbon-fiber components can also be manufactured by vacuum infusion.
Potential applications include:
Automotive carbon parts
Marine structures
Industrial carbon-fiber components
Prototype composite structures
Because carbon reinforcements can have relatively low permeability,the resin-feed layout should be carefully designed.
Spiral Tube for Automotive Composites
Vacuum infusion can be used for selected lightweight automotive components.
Potential applications include:
Body panels
Structural composite parts
Prototype components
Carbon-fiber panels
Spiral tubing can support resin distribution across larger mold areas.
Spiral Tube for Industrial FRP
Industrial FRP manufacturers can use spiral tubing in production of:
Panels
Covers
Tanks
Structural shells
Equipment housings
Large molded parts
The tube is a process consumable and does not remain as structural reinforcement in the finished component.
Spiral Tube for Large Composite Panels
Large panels may require multiple resin-feed zones.
Spiral tubing can be placed along one or more sides of the laminate to introduce resin across a broad area.
The final feed pattern should be based on:
Panel length
Panel width
Laminate thickness
Resin viscosity
Flow-media coverage
Vacuum Infusion Spiral Tube vs. Resin Feed Hose
These products perform related but different functions.
Resin feed hose normally transports resin from the resin container to the mold.
Spiral tube distributes resin along a selected section of the mold or laminate.
A typical system may use both.
The resin hose connects the resin source to the spiral distribution tube.
Spiral Tube vs. Flow Media
Flow media and spiral tubing both influence resin distribution,but they work differently.
Spiral tubing provides a relatively large linear resin channel.
Flow media distributes resin across a broad two-dimensional surface.
A common infusion design uses spiral tubing to introduce resin into the flow media.
Spiral Tube vs. Vacuum Hose
Vacuum hose normally transports air from the bagged laminate toward the vacuum pump or resin trap.
Spiral tube may act as a distributed vacuum channel inside the bag.
It should not automatically replace external vacuum hose.
Spiral Tube vs. Perforated Hose
A perforated hose uses holes through a closed tube wall.
Spiral tubing uses continuous gaps created by the spiral structure.
Both can distribute resin or vacuum,but their flow behavior and mechanical structure are different.
Spiral Tube vs. Flow Channel
A dedicated molded flow channel may be integrated into tooling or another process component.
Spiral tubing provides a removable,flexible alternative that can be positioned according to each lay-up.
This makes it useful for:
Prototype production
Changing mold layouts
Large custom parts
Low- and medium-volume manufacturing
Understanding Inner Diameter
The current available inner diameters are: 10 mm,12 mm,and 18 mm.
Inner diameter influences the hydraulic resistance of the tube.
A larger internal flow area can support higher flow demand,but total infusion behavior also depends on:
Resin viscosity
Tube length
Pressure differential
Feed-line layout
Resin temperature
Understanding Wall Thickness
The current listed wall thicknesses are: 0.9 mm and 1.3 mm.
SWP10 and SWP12 use: 0.9 mm.
SWP18 uses: 1.3 mm.
Wall thickness can influence:
Structural stability
Handling
Resistance to deformation under vacuum
Flexibility
Understanding Resin Viscosity
Resin viscosity is one of the most important variables in vacuum infusion.
Lower-viscosity resin generally moves more easily through:
Spiral tubing
Flow media
Reinforcement
Viscosity can change with temperature and cure progression.
Infusion should be completed within the usable processing window of the resin.
Understanding Tube Length
Longer resin-feed sections create more flow resistance.
For very large parts,it may be necessary to use:
Multiple feed points
Larger tubing
Multiple spiral sections
Staged resin introduction
The correct configuration should be established through infusion trials or process engineering.
Understanding Resin Feed Pressure
Vacuum infusion normally relies primarily on atmospheric pressure differential rather than high-pressure resin injection.
The resin-feed system should therefore remain compatible with:
Vacuum level
Resin viscosity
Hydrostatic head
Mold geometry
Spiral tubing should not be treated as pressure-rated industrial piping.
Understanding Maximum Service Temperature
The current listed maximum service temperature is: 100°C.
For technical accuracy,maximum listed service temperature and validated continuous cure temperature should not automatically be treated as identical.
Selection should consider:
Peak cure temperature
Resin exotherm
Cure duration
Post-cure temperature
If the composite process exceeds 100°C,a different tube grade should be evaluated.
Understanding Tube Collapse Under Vacuum
The source describes the tube as maintaining its channel structure under vacuum.
This is an important functional requirement because excessive collapse could restrict resin or air flow.
Actual resistance to deformation can depend on:
Tube diameter
Wall thickness
Polymer
Temperature
Vacuum differential
Contact pressure from surrounding consumables
A process trial is recommended for demanding conditions.
Understanding Resin Feed Position
Spiral tube may be positioned:
Along the centerline
Along a mold edge
Around the perimeter
Across selected feed zones
Different layouts produce different resin-front patterns.
The best configuration depends on the laminate.
Understanding Vacuum-Side Position
When spiral tubing is used as a vacuum channel,it should normally be located so air can reach it without creating excessive resin loss.
Potential considerations include:
Resin brake zones
Breathable membrane
Peel ply
Vacuum manifold layout
Resin trap
The objective is to maintain vacuum while controlling resin arrival.
Understanding Race Tracking
Spiral tubing intentionally creates a low-resistance flow path.
If positioned incorrectly,it can contribute to resin reaching unintended areas too quickly.
Flow design should therefore avoid:
Uncontrolled edge channels
Premature vacuum-line resin arrival
Bypassing slow-flow laminate zones
Uneven resin fronts
Typical Vacuum Infusion System
| Component | Main Function |
| Resin Feed Hose | Transfers Resin from Container to Mold |
| Spiral Resin Feed Tube | Distributes Resin Along a Line |
| Flow Media | Spreads Resin Across the Laminate Surface |
| Peel Ply | Creates Removable Textured Surface |
| Release Film Where Required | Controls Separation / Resin Passage |
| Vacuum Line | Removes Air from the System |
| Vacuum Bagging Film | Forms Airtight Outer Envelope |
| Sealant Tape | Seals Vacuum Bag to Mold |
| Resin Trap | Helps Protect Vacuum Equipment from Resin |
The exact combination depends on composite process design.
Spiral Tube Selection Guide
| Application | Suggested Starting Diameter | Main Selection Factors |
| Small Composite Parts | 10 mm | Short Feed Length / Lower Flow Demand |
| General FRP Infusion | 10–12 mm | Resin Viscosity / Part Size |
| Marine Components | 12–18 mm | Long Feed Zones / Mold Size |
| Large Industrial Panels | 12–18 mm | Flow Distance / Feed Layout |
| Wind Turbine Blade Infusion | 18 mm Direction | Long Feed Length / High Resin Demand |
| Vacuum Distribution Channel | Process-Specific | Air Flow / Resin Control / Layout |
| Carbon Fiber Infusion | Process-Specific | Low Permeability / Resin Viscosity |
These recommendations are starting points rather than fixed engineering requirements.
How to Choose Vacuum Infusion Spiral Tube
Important purchasing information includes:
Composite part
Part dimensions
Resin system
Resin viscosity
Reinforcement type
Laminate thickness
Required resin-feed length
Number of feed points
Vacuum layout
Cure temperature
Required inner diameter
Required roll length
Annual consumption
Quantity
Packaging requirement
Destination
For very large parts,a basic infusion diagram can help determine the most suitable tube diameter and layout.
Choosing 10 mm,12 mm or 18 mm Spiral Tube
A smaller tube can be suitable for shorter feed lengths and smaller composite parts.
A larger tube may be considered where:
Feed distance is longer
Resin demand is higher
Part area is larger
However,diameter should not be selected independently of resin viscosity and feed strategy.
Choosing Spiral Tube for Wind Blades
For wind-energy applications,provide:
Blade size
Infusion zone
Resin type
Resin viscosity
Feed-line length
Cure temperature
Existing flow-media layout
Large blade manufacturing may require multiple resin-feed lines rather than one continuous tube.
Choosing Spiral Tube for Marine Parts
For marine composites,provide:
Hull or panel dimensions
Reinforcement stack
Core material
Resin system
Infusion distance
Existing feed strategy
Curved mold edges can make flexible spiral tubing particularly convenient.
Choosing Spiral Tube for High-Temperature Processing
The current listed maximum service temperature is: 100°C.
If your process approaches or exceeds this value,provide:
Peak cure temperature
Time at temperature
Resin exotherm
Post-cure temperature
A higher-temperature tube grade should be selected if required.
Installation Guidelines
General installation considerations include:
Cut tubing to the required length
Position according to the infusion plan
Connect securely to the resin-feed or vacuum line
Prevent sharp cut ends from contacting the vacuum bag
Avoid excessive bending that may restrict the channel
Confirm the tube remains open under vacuum
Check the complete system for leaks before resin introduction
Monitor resin-front progression during infusion
Final installation should follow the validated production procedure.
Quality Control
Important quality-control parameters can include:
Inner diameter
Wall thickness
Spiral geometry
Roll length
Color
Dimensional consistency
Surface cleanliness
Flexibility
Resistance to deformation
Temperature capability
Batch identification
For repeat production,consistent spiral pitch and tube geometry can be important for predictable flow behavior.
Packaging
The current standard packaging is: 100 m/roll.
Each roll is individually packed and can be placed into reinforced export cartons.
For bulk orders,palletized packaging can be used to protect the rolls against:
Compression
Contamination
Deformation
Mechanical damage
Customized roll length,labeling,and carton configuration can be discussed according to order requirements.
Storage Guidelines
The current recommended storage temperature is: 15–25°C.
The current recommended relative humidity range is: 30–70% RH.
General storage recommendations include:
Keep rolls in original packaging until use
Store in a cool,dry,well-ventilated location
Avoid direct sunlight
Avoid excessive heat
Protect from sharp objects
Keep away from grease,acid,alkali,and contamination
Store rolls on supported flat surfaces
Protect rolls from deformation
The current source states a shelf life of: 12 months under proper storage conditions.
This value should be confirmed against the supplied batch documentation when contractual shelf life is required.
Frequently Asked Questions About Vacuum Infusion Spiral Tube
1. What is vacuum infusion spiral tube?
It is an open spiral plastic tube used to create a resin-feed or vacuum-distribution channel during composite vacuum infusion.
2. What is its main function?
Its primary function is: linear resin distribution or vacuum-channel formation.
3. What inner diameters are available?
The current options are: 10 mm,12 mm,and 18 mm.
4. What models are available?
The current grades are: SWP10,SWP12,and SWP18.
5. What is the wall thickness of SWP10?
The current listed value is: 0.9 mm.
6. What is the wall thickness of SWP12?
The current listed value is: 0.9 mm.
7. What is the wall thickness of SWP18?
The current listed value is: 1.3 mm.
8. What color is available?
The current listed color is: White.
9. What is the maximum service temperature?
The current listed maximum is: 100°C.
10. What is the standard roll length?
The current standard packaging is: 100 m/roll.
11. Can spiral tube be used for vacuum infusion?
Yes,this is its primary application.
12. Can it be used for L-RTM?
Yes,the current product is also positioned for L-RTM resin distribution.
13. Can it be used for wind turbine blades?
Yes,large wind-energy components are a relevant application.
14. Can it be used for marine composites?
Yes,it can be used for resin distribution in boat hulls,decks,and other marine composite parts.
15. Can it be used with fiberglass?
Yes,fiberglass vacuum infusion is a primary application direction.
16. Can it be used with carbon fiber?
Yes,provided the tube layout,resin viscosity,and infusion strategy are suitable.
17. Is spiral tube the same as resin hose?
No. Resin hose transports resin from the resin source,while spiral tube normally distributes resin along the mold.
18. Is spiral tube the same as flow media?
No. Spiral tube creates a linear high-flow channel,while flow media distributes resin across a wider surface.
19. Can spiral tube be used on the vacuum side?
Yes,in selected process designs it can provide a distributed vacuum channel.
20. Does larger diameter always provide better infusion?
No. Tube diameter must be matched to resin viscosity,feed length,part size,and process layout.
21. Can SWP18 be used for large parts?
Yes,its larger 18 mm inner diameter makes it a logical grade to evaluate for larger resin-feed requirements.
22. Can the tube withstand full vacuum without collapsing?
The source positions it as structurally stable under vacuum,but exact performance depends on temperature,diameter,wall thickness,and process configuration.
23. Can it be used above 100°C?
The current listed maximum service temperature is: 100°C,so higher-temperature use should not be assumed without another validated grade.
24. Does the tube remain in the finished composite?
Normally no. It is treated as a temporary composite-processing consumable.
25. Can it replace flow media?
Generally no. Spiral tube and flow media perform complementary resin-distribution functions.
26. Can it reduce resin waste?
A properly designed feed system may improve resin delivery efficiency,but resin consumption depends on the entire infusion process.
27. Is it suitable for prepreg manufacturing?
Traditional prepreg processing generally does not require an external resin-feed tube. Any prepreg-related use should therefore be confirmed for the specific manufacturing process rather than treated as a standard application.
28. How should spiral tube be stored?
Store it in original packaging in a cool,dry environment and protect it from heat,sunlight,sharp objects,and deformation.
29. What is the listed shelf life?
The current source states: 12 months under appropriate storage conditions.
30. What information should I provide for a quotation?
Provide the required inner diameter,roll length,resin system,resin viscosity,part size,cure temperature,application,quantity,packaging requirement,and destination.
Why Choose WGSC Composite?
WGSC Composite supplies fiberglass,carbon fiber,resin systems,and vacuum-infusion consumables for wind energy,marine,automotive,industrial FRP,and other composite manufacturing applications.
Vacuum infusion spiral tube can be integrated with flow media,peel ply,perforated release film,breathable membrane,vacuum bagging film,sealant tape,resin hose,and vacuum tubing to support complete composite-infusion systems.
For wind-blade manufacturers,marine composite producers,FRP fabricators,distributors,and OEM buyers,spiral tubing can be selected according to inner diameter,resin viscosity,part size,feed-line configuration,and processing temperature.
Request a Quote
For vacuum infusion spiral tube,resin feed spiral tube,resin distribution spiral tubing,L-RTM spiral tube,wind blade resin feed tube,or composite infusion spiral tube,please provide your required diameter,roll length,resin system,resin viscosity,part dimensions,cure temperature,quantity,packaging requirements,and destination.