Pipeline precooling technology is based on the principle of shear barrier sheet system, using factory mechanization production process, including PIR/PUR continuous spraying technology, glass fiber reinforced plastic outer protective layer technology.
Precooling layer spraying polyurethane cooling system structure from inside to outside is as follows:
Shear barrier layer (high density PIR)
Fiberglass needled felt (used as isolation belt)
Cooling layer: sprayed PIR/PUR
Glass fiber reinforced resin (GRE)
Dehe pre-insulation system conforms to European CINI insulation specification