PTFE is double walled by the meter.
The longest length with a continuous inner is 100mtr.
We can do up to 130 meters with a coninuous inner and outer join in 12/9, 8/5 and 6/4. All other sizes would have an inner an outer join.
For Double Walled MDPE we can do as above but will only double wall in 30, 50 and 100mtr coils or 130 mtr. Again only continuous inner in 12/9, 8/5 or 6/4.
We can double wall in MDPE Alkathene, please contact the office for details.