Ethylene liquid disposition line at a petrochemical complex in Malaysia.
4.2 km of cold-service piping connecting two ethylene facilities — including a 400 m underground tunnel section with only 50 mm of clearance for insulation. Cryogel® Z was the only material that fit and met the ΔT requirements.

4.2 km of cold service with a tight underground section.
Stringent temperature-gain requirements at every section — and a 400 m underground tunnel under a road with only 50 mm clearance.
- 4.2 km cold-service pipeline. Carrying ethylene at −100 °C between facilities.
- 400 m underground tunnel section. Space constraint of 50 mm left for insulation in the tunnel.
- Heat-gain budget at every section. Stringent ΔT requirement end-to-end.
Cryogel® Z is the only material that fits — and performs.
Cryogel® Z 10 mm met both the space constraint and the thermal target, plus delivered passive fire protection as a bonus.
- Met the ΔT requirement at every section. Cold-service performance held across 4.2 km.
- Only material able to fit the underground tunnel. 50 mm clearance ruled out every traditional alternative.
- Pre-cut in workshop, installed at site. Accelerated installation rate across the long run.
- Passive fire protection included. Added safety benefit on the pipeline scope.
~258,000 ft² installed, ΔT held end-to-end.
Approximately 258,000 ft² of Cryogel® Z 10 mm was deployed across the 4.2 km route — delivering the ΔT budget at every section, fitting the 50 mm underground tunnel clearance, and adding passive fire protection.
Cold-service pipeline with tight clearance?
Cryogel® Z fits where traditional insulation can’t — Aspen can run the trade study against your space and ΔT budget.