01Tube furnace RFQ guide
Prepare process-tube diameter, heated length, access, orientation, zone and electrical inputs for a full-circle or split ceramic fiber tube chamber.
02Overview
A tube furnace chamber is specified from the process tube outward. Start with tube outside diameter and clearance, then define heated length, full-circle or split access, orientation, zones, leads, terminals and the available enclosure.
03Technical information
The process-tube outside diameter and required clearance establish the bore. The complete tube furnace chamber specification then adds heated and overall length, full-circle or split construction, orientation, end insulation, control zones and electrical interfaces.
Provide tube material, outside diameter, tolerance, supported length and any end fittings that affect the chamber. State the required annular clearance instead of assuming the insulation bore equals the nominal tube diameter.
Use a full-circle body for fixed installation or matched split sections when the process tube needs service access. Define the split plane, hinge or clamp method, joint and external retention.
The element zone can be shorter than the total chamber. State both dimensions and identify end insulation, guard zones, section joints and any tapered transition required by the equipment.
For single- or multi-zone heaters, list zone lengths, voltage, power, sensors, circuit grouping, lead direction and terminal positions. These inputs define the groove and section layout.
04Selection table
Use the table to record the process-tube dimensions, heated length, access method and electrical data on one RFQ.
| Input group | What to provide | Drawing effect |
|---|---|---|
| Process tube | Material, outside diameter, tolerance and clearance | Bore and end geometry |
| Lengths | Heated length, overall length and supported length | Element zone and end insulation |
| Access | Full-circle, split, hinged or removable construction | Joint, retention and service method |
| Orientation | Horizontal, vertical or special mounting | Supports, leads and assembly direction |
| Thermal zones | Zone count, boundaries, temperature target and sensors | Sections, grooves and controller interface |
| Electrical | Voltage, power, phase, element and terminal layout | Element pattern and connections |
05Product selection steps
Start with the process tube and required hot zone, then specify the bore, element layout, insulation body and outer installation dimensions.
Record tube diameter, tolerance, orientation, support and end hardware.
Define heated length, overall length, full-circle or split structure and service method.
Map control zones, sensors, elements, voltage, power, leads and terminals.
Confirm the outside dimensions, mounting, shell clearance, quantity and production drawing.
08Technical FAQ
The process-tube outside diameter and required clearance establish the bore, but heated length, overall length and service access are also essential.
Yes. Split-half and hinged constructions can be developed when the process tube must remain accessible.
Yes. Provide zone count, zone lengths, sensors, voltage, power and terminal locations so the body and groove layout can be coordinated.
Yes. Send dimensions, electrical data, photographs, the equipment model and any available drawing or sample.
10Specification support
Include tube outside diameter, radial clearance, full-circle or split access, orientation, heated length, zones, openings and electrical inputs.
