A PP steel-wire telescopic tube uses a polymer wall and a helical wire to combine flexibility, shape control and an extendable product form. The wire, wall profile and connection geometry must be developed as one cross-section.
The quotation should state how the polymer is formed around the wire, how the tube is cooled and pulled, and how expanded and compressed lengths will be handled. A generic flexible-hose line description is not enough for this product.
Typical equipment scope
- PP material feeding and extrusion section
- Steel-wire payoff, tension control and helix-forming equipment
- Product-specific forming and combining tooling
- Cooling and profile stabilization
- Haul-off or guided movement suited to the telescopic structure
- Length control, cutting and end handling
- Compression, collection and packing equipment when included
- Optional connector assembly interface defined separately
The final station list follows the approved product drawing, material route and buyer-supplied factory conditions. Optional operations should be priced separately so quotations remain comparable.
Information needed for a proposal
- Tube application and mating equipment or duct connection
- PP grade, color and any buyer-defined material requirements
- Expanded and compressed product drawings
- Inside diameter, outside diameter and wall profile
- Steel-wire material, diameter, pitch and coating if applicable
- Required extension or compression ratio and test method
- End connection, clamp or fitting details
- Cut length, compressed pack length and packing method
- Target production rate and product mix
- Voltage, cooling water, compressed air and workshop layout
Points to confirm before ordering
- Inspect wire position and pitch together with the finished tube dimensions.
- Define expanded and compressed measurement conditions to avoid comparing different test states.
- Confirm whether end forming, fittings and clamps are included or buyer supplied.
- Record the material, tooling, stable operating conditions and accepted samples during the factory test.
Frequently asked questions
Can the same line change tube diameter?
A diameter range may require different dies, forming tools, wire settings and downstream guides. Provide the full size list for a changeover review.
How should telescopic performance be accepted?
The technical agreement should name the expanded length, compressed length, number of cycles if relevant, conditioning and measurement method.
Can connectors be produced on the same line?
Connector manufacture and assembly are separate process questions. Send the connection drawing so the boundary can be quoted accurately.
Related equipment and planning guides
PVC Steel-Wire-Reinforced Hose Extrusion Line · Fresh-Air Duct Corrugated Pipe Machine · Corrugated Pipe Auxiliary Equipment
Discuss your project with Mac Lee
Send the finished-product drawing, material information, planned size range, required downstream operations, target production basis and factory utilities. RUNNING MACHINE will use those inputs to discuss a project-specific equipment boundary.
mac@running-machinery.com · WhatsApp +86 186 6974 6703
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