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Gansu Juxiang Fluoroplastics Technology Co.,Ltd. is a fluoroplastic manufacturer producing a focused range of PTFE (thermal insulation material) insulation jacket pipe manufacturer for heat preservation and condensation control on fluid and gas lines. The product is a porous PTFE sleeve that slips over tubing and pipe, combining the chemical resistance, heat resistance and weather resistance of PTFE tube with a soft, lengthwise-flexible wall whose pore structure holds still air against the line. We supply nominal sizes from 1/8 in to 2 in with 3 mm, 5 mm and 8 mm walls, and we produce to drawing where a project calls for a non-standard diameter, wall or cut length.
What the Porous Wall Does in Service
The jacket is a thermal barrier, not a pressure boundary. It is fitted over an existing tube or pipe, so the process fluid stays inside the original line while the PTFE sleeve reduces heat loss from hot service and raises the outer surface temperature on cold service to keep condensation off the pipe.
- Heat preservation on hot fluid, hot gas and transfer lines where the medium must hold temperature over distance.
- Condensation prevention on chilled water, instrument air and low-temperature process tubing where surface sweating damages insulation, labels or nearby equipment.
- Chemical and weather exposure — the sleeve carries the same chemical resistance, heat resistance and weather resistance as PTFE tube, so outdoor runs and splash zones do not require a separate protective wrap.
- Flexible routing — softness and lengthwise flexibility let the jacket follow bends and offsets without cracking or splitting at the outside of a curve.
Standard Sizes and Wall Thickness Options
Three wall thicknesses cover most line sizes. The 3 mm wall suits tight installations and short runs; 5 mm is the general-purpose choice for moderate temperature differentials; 8 mm is used where the temperature difference across the wall is larger or where condensation risk is high. Wall tolerance widens with thickness, from ±0.5 mm on the smaller 3 mm sizes to ±1 mm on the 8 mm range.
| Model code | Nominal size | OD × ID (mm) | Wall (mm) | Wall tolerance |
|---|---|---|---|---|
| JUXIANG/T I M-1/8-3 | 1/8 in | φ9.35 × φ3.35 | 3 | ±0.5 |
| JUXIANG/T I M-1/4-3 | 1/4 in | φ13.35 × φ7.35 | 3 | ±0.5 |
| JUXIANG/T I M-3/8-3 | 3/8 in | φ16.52 × φ10.52 | 3 | ±0.5 |
| JUXIANG/T I M-1/2-3 | 1/2 in | φ19.70 × φ13.70 | 3 | ±0.5 |
| JUXIANG/T I M-3/4-3 | 3/4 in | φ26.00 × φ20.00 | 3 | ±0.5 |
| JUXIANG/T I M-1-3 | 1 in | φ32.00 × φ26.00 | 3 | ±0.5 |
| JUXIANG/T I M-1-1/2-3 | 1-1/2 in | φ45.00 × φ39.00 | 3 | ±0.7 |
| JUXIANG/T I M-2-3 | 2 in | φ56.00 × φ50.00 | 3 | ±0.7 |
| JUXIANG/T I M-1/4-5 | 1/4 in | φ17.35 × φ7.35 | 5 | ±0.7 |
| JUXIANG/T I M-1/2-5 | 1/2 in | φ20.52 × φ13.70 | 5 | ±0.7 |
| JUXIANG/T I M-1-5 | 1 in | φ30.00 × φ20.00 | 5 | ±0.7 |
| JUXIANG/T I M-1-1/2-5 | 1-1/2 in | φ49.00 × φ39.00 | 5 | ±0.7 |
| JUXIANG/T I M-1/4-8 | 1/4 in | φ23.35 × φ7.35 | 8 | ±1 |
| JUXIANG/T I M-1/2-8 | 1/2 in | φ29.70 × φ13.70 | 8 | ±1 |
| JUXIANG/T I M-1-8 | 1 in | φ42.00 × φ26.00 | 8 | ±1 |
Intermediate sizes, heavier walls and factory-cut lengths are produced against the line schedule rather than held to the standard list.
Application Fit Across Process Lines
The jacket is specified where a line must be insulated but a rigid section, foam or tape wrap is impractical — dense equipment cabinets, semiconductor wet-process tubing, chemical dosing and transfer lines, high-purity gas runs, outdoor instrument tubing and tank farm connections.
- Semiconductor and electronics — wet bench chemical lines and high-purity gas tubing where particulate-free, chemically inert insulation is required.
- Chemical and petrochemical — acid and solvent transfer lines, sampling lines and pump connections exposed to splash and fume.
- New energy and hydrogen — utility and process tubing in production areas where condensation and heat loss affect control stability.
- General plant engineering — instrument air, chilled water and low-temperature utility runs routed outdoors or through unheated space.
The sleeve is not a structural or abrasion-resistant component. Lines carrying high pressure, abrasive slurry or heavy mechanical loading keep their own pressure-rated tube, and the jacket is applied over it purely for thermal duty.
Fitting the Jacket to the Pipe
Selection starts with the actual outside diameter of the tube or pipe, not its nominal size. The jacket bore must clear the pipe so the sleeve slides on by hand over the full run, including any fittings it must pass. Where the pipe is already installed, we supply slit or split configurations on request so the jacket can be fitted without breaking the line.
- Confirm pipe OD, wall and the maximum fitting diameter along the route.
- Choose wall thickness from the temperature difference, ambient conditions and acceptable surface temperature.
- Allow for bend radius — the sleeve follows gentle bends but should not be forced around tight elbows.
- Specify cut lengths per run, with allowance at flanges, supports and valve bodies.
- Terminate ends so the jacket cannot slide along the line during thermal cycling.
- Use clamps or supports that do not compress the porous wall.
Material Consistency and Acceptance
Jackets are produced from PTFE with a controlled porous structure, and the pore network is what determines insulation performance — an inconsistent cell structure shows up as hard or dense patches that conduct heat and stiffen the sleeve. Our inspection covers outside diameter, inside diameter and wall thickness against the tolerance bands in the size table, together with a visual check for splits, dense areas and surface contamination.
Each shipment is identified by model code and batch so that a repeat order can be matched to the original production. Documentation covering dimensions and material identification is issued with the goods, and where a project requires additional inspection or third-party verification, that scope is agreed before production. Manufacturing runs across our Zhejiang and Gansu bases, which supports repeat supply for multi-phase projects.
Fluoroplastic Products Supplied Alongside
The insulation jacket is one part of a broader fluoroplastic programme covering sealing, fluid handling and electrical components. Related categories that frequently ship with the same project include:
- Filled PTFE Tube, Rod for bushings, seals and machined components where virgin PTFE needs higher compressive strength or wear resistance.
- PTFE Thread Seal Tape for threaded joints on the same fluid systems.
- The full Products range, including PFA and FEP tubing, gaskets, sheets and custom machined parts.
Information We Use to Configure Your Solution
Quotations are prepared from the working point rather than from a catalogue number alone. The details that let us confirm the right wall, bore and length are:
- Pipe or tube outside diameter, wall thickness and material.
- Medium, operating temperature and ambient temperature around the line.
- Whether the duty is heat preservation, condensation control or both.
- Line length, number of bends, and the largest fitting the jacket must pass.
- Indoor or outdoor routing, UV exposure and washdown or chemical splash.
- Required cut lengths, end treatment and quantity per size.
- Any drawing, tolerance or inspection requirement to be met at acceptance.
Customer Questions
Which sizes and wall thicknesses can you supply?
Standard production covers 1/8 in to 2 in nominal sizes with 3 mm, 5 mm and 8 mm walls, with wall tolerances from ±0.5 mm to ±1 mm depending on thickness. Non-standard outside diameters, bores and cut lengths are produced to drawing.
Does the jacket resist the same chemicals as PTFE tube?
Yes. The sleeve has the same chemical resistance, heat resistance and weather resistance as PTFE tube, and the porous structure adds thermal insulation without changing the chemical behaviour of the material.
Can the jacket be fitted to an existing line?
Where the pipe is already in service, we produce slit jackets that open along the length and close around the pipe, avoiding a line break. The bore is sized to the measured pipe outside diameter.
What do you need to quote a jacket size?
Send the pipe outside diameter, medium and operating temperature, ambient conditions, run length, largest fitting diameter and quantity. With those values we confirm wall thickness, bore, cut length and end treatment, and return a configuration with the quotation.
