Casting quality
Reduce gas-related pores and voids
Create a controlled path for core gases to leave the mold instead of remaining in the casting material.
Core gas discharge hoses for industrial foundries
Control core gases before they become casting defects.
A flexible, knitted evacuation path designed to help gases escape from round and shaped cores during casting—supporting stronger, smoother, more consistent castings.
- Patented design
- Made in İzmir
- Configurable supply
Core hoseKnitted tubular structure
Engineered around your coreDiameter, length, and placement support available.
Referenced by established casting manufacturers
The production challenge
Give core gases a deliberate exit path.
Incomplete evacuation can leave pores and voids, weaken the casting, and contribute to an uneven surface. CoreFilters creates a continuous, flexible channel within the core to guide gases out during the process.
Process time
Avoid extra gas-channel drilling
Place the hose during core preparation and continue the normal production process after core making.
Application fit
Reach complex core geometries
The flexible tubular structure can follow round, vertical, circular, and shaped core applications.
Operational cost
Target known problem areas
Apply the disposable hose where gas evacuation is needed, helping reduce losses tied to poor-quality castings.
The engineered component
A structure that stays open for gas discharge.
Polyester weft threads wrap around nylon or polypropylene warp lines to form a perforated knitted tube. During gas discharge, the woven structure contracts under hot gas and hardens, helping keep the air outlet open.
- Flexible placement in complex geometries
- Perforated pores across the knitted structure
- Lightweight, disposable process component
- Custom diameters and lengths available on request
Procurement-ready information
Standard product range
Core Gas Discharge Hoses are available in the standard range below. Application-specific dimensions can be discussed with our team.
| Product type | Diameter | Meters / box | Line material |
|---|---|---|---|
| 4 mm Core Hose | 4 mm | 2,000 m | Nylon / polypropylene |
| 5 mm Core Hose | 5 mm | 2,000 m | Nylon / polypropylene |
| 6 mm Core Hose | 6 mm | 2,000 m | Nylon / polypropylene |
| 8 mm Core Hose | 8 mm | 1,000 m | Nylon / polypropylene |
| 10 mm Core Hose | 10 mm | 1,000 m | Polypropylene |
| 15 mm Core Hose | 15 mm | 500 m | Polypropylene |
| 20 mm Core Hose | 20 mm | 500 m | Polypropylene |
Plant-floor implementation
Three steps. Your normal process continues.
Place the hose in the target gas-outlet area during core preparation. Keep an end exposed to air to establish the evacuation route.
01Cut to length
Cut the desired amount—typically 1 to 2 meters—from the continuous hose with scissors.
02Place in the core
Position the hose before core making in the form and orientation your geometry requires.
03Keep the outlet open
Leave one or both ends in contact with air so gas can escape, then continue the normal process.
Application video
See the placement method on the plant floor.
Application coverage
Flexible enough for the core—not the other way around.
Use the hose in problematic gas-outlet areas across round and shaped cores. Its tubular form can be arranged around the geometry that matters to your process.
Different diameters and lengths available
Manufacturing confidence
Built by an established technical-braiding manufacturer.
Founded in 1999 in İzmir by Serdar Yılmaz, the company owns its production site and manufactures CoreFilters in-house alongside technical braid products for multiple sectors.
800 m²Company-owned production area
80Production machines
5,000 m/dayDocumented production capacity
Wilhelm Steeger + HacobaGerman-origin machinery
Technical resources
Give your team the details they need.
Share the source documents with engineering, quality, process, and procurement stakeholders.
Common engineering questions
Clear answers for evaluation.
Need an application-specific answer? Send your core geometry and process context to our team.
Ask a technical questionHow is the core hose installed?+
Cut the required length, position it inside the core before core making, and keep one or both ends in contact with air so gases have an exit path. Your normal process then continues.
Which standard diameters are available?+
The documented standard range is 4, 5, 6, 8, 10, 15, and 20 mm. Different diameters and lengths can be discussed for your application.
Can it be used in shaped cores?+
Yes. Its flexible tubular structure is designed for round and shaped cores, including applications such as engine blocks and pump castings.
Is the core hose reusable?+
No. The Core Gas Discharge Hose is a disposable process component.
Where is CoreFilters manufactured?+
CoreFilters is produced at the company-owned manufacturing site in İzmir, Türkiye, using Wilhelm Steeger and Hacoba machinery of German origin.
Application support
Start with the casting problem—not a catalog number.
Share the core type, geometry, gas-related defect area, and expected volume. We’ll use that context to discuss a suitable diameter, length, and placement approach.
Request an engineering review