Steel-Wire and PU/PA/PE Hoses

For movement, PU; for fixed high-pressure lines, PA; for economy, PE.

PU, PA and PE comparison

Type	Character	Preferred where
PU (polyurethane)	Flexible, bend-resistant	Moving machine parts, coiled lines
PA (nylon)	Rigid, high pressure rating	Fixed main lines
PE (polyethylene)	Economical, chemical resistant	Low-pressure lines, water
Steel-wire PVC	Vacuum resistant	Suction/discharge, tanker unloading

PU or PA for my pneumatic line — which do I choose?

For moving parts on continuous flex, PU. For fixed, high-pressure main lines, PA. PU wins on flexibility, PA on pressure rating.

How is pneumatic tubing size specified?

By outer diameter (e.g. 6mm, 8mm, 10mm), since push-in fittings work off outer diameter; wall thickness completes the spec.

Where is steel-wire hose used?

In suction and vacuum applications — the wire prevents collapse under vacuum. Standard for tanker unloading and pump suction lines.

Can you make custom-length spiral pneumatic hose?

Yes — to your extended length and connection type at each end.