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PI rod Manufacturer · Direct Factory Supply
PI rod
JIAFUXIN manufactures and supplies PI rod for industrial buyers that require high-temperature stability, dielectric strength and wear resistance. Standard sizes, custom dimensions and drawing-based factory processing are available.
Engineering overview
Grades, Properties and Manufacturing Options
Select PI rod by diameter, straightness, concentricity, material grade, filler and finished-part tolerance. Final suitability depends on the complete operating environment and required service life.
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Selection guide
Information Required for Material Selection
Share these details to shorten quotation time and reduce specification risk.
01
Operating temperature
Minimum, maximum and continuous temperature under load.
02
Chemical environment
Media, concentration, pressure and exposure duration.
03
Mechanical demand
Load, movement, wear, creep and dimensional stability.
04
Manufacturing details
Dimensions, tolerance, surface, quantity and documentation.
Technical overview
PI rod Specifications
| Material | Polyimide |
|---|---|
| Available grades | Unfilled, graphite-filled, PTFE-filled and reinforced grades |
| Manufacturing process | Ram extrusion, paste extrusion, compression molding and sintering |
| Supply formats | Standard and custom diameters with machining allowance |
| Typical temperature capability | Typically -200°C to +260°C; short-term capability may be higher |
| Typical density | Approximately 1.35–1.55 g/cm³ by grade |
| Custom processing | Cut blanks, CNC turning, drilling, threading, grooving and inspection |
Values are general reference information, not a material certificate. Grade, process, dimensions and test method affect actual results.
Performance and design
Why Engineers Specify PI rod
Moisture absorption and material brittleness require design consideration.
Material performance
High-temperature stability, dielectric strength and wear resistance.
Grade options
Unfilled, graphite-filled, PTFE-filled and reinforced grades.
Selection criteria
Diameter, straightness, concentricity, material grade, filler and finished-part tolerance.
Secondary processing
Cut blanks, CNC turning, drilling, threading, grooving and inspection.
Frequently asked questions
PI rod FAQ
What should buyers verify when choosing a PI rod manufacturer?
Confirm the resin or compound, manufacturing route, dimensional tolerance, inspection method and batch traceability. The drawing and service conditions should be reviewed before price becomes the deciding factor.
What information should I send to a PI rod supplier?
Send the required grade, dimensions, tolerance, quantity, operating temperature, chemical media, mechanical load, documentation and delivery destination. Photos or drawings help prevent quotation assumptions.
Can the JIAFUXIN PI rod factory make custom sizes?
Custom dimensions and secondary processing can be reviewed from a drawing, sample or application specification. Feasibility depends on the material, production method, tolerance and order volume.
Are PI rod rod and bar the same product?
Rod and bar are often used interchangeably for round stock. The purchase specification should define diameter, length, straightness, ovality, grade and machining allowance.
What is the difference between PI and PEEK?
Both are high-performance engineering plastics. PI is often selected for extreme thermal and dielectric demands, while PEEK provides strong mechanical performance, chemical resistance and broader processing options. See the PI material guide.
Is polyimide the same as Kapton?
Kapton® is a well-known brand of polyimide film, while polyimide is the generic polymer family. PI also comes in stock shapes and compounds beyond film.
How do I select the right PI rod for my application?
Select PI rod by diameter, straightness, concentricity, material grade, filler and finished-part tolerance. Final suitability depends on the complete operating environment and required service life.
How much machining allowance is needed on PI rod?
Allowance depends on rod diameter, straightness, ovality, finished tolerance and whether stress relief is required. Send the finished drawing so stock size can be selected correctly.
Talk to an engineer
Request a PI rod Quote
Send the material, dimensions, quantity, working conditions and drawings. JIAFUXIN will recommend a practical manufacturing route.