Prefabricated directly buried insulated pipe
stainless carbon steel pipe coated with pu foam insulation material and hdpe sleeve for chilled water pipeline
The pre insulated pipe is a kind of heat resistant pipe used for district heating and cooling by transport hot water and chilled water.
The carrier pipe is 20#seamless steel pipe with DN≤150 and Q235B spiral welded carbon steel pipe with DN≥200
steel standard:API, ASTM, DIN, GB or any other standard as customer's request.
The thermal insulating material of the pre insulated pipe is high density cfc-free polyurethane foam
thermal conductivity ≤0.033W/mk
The outer jacket of the pre insulated pipe is hdpe pipe or galvanized steel jacket.
PE density ≥940kg/m3
surface treatment:corona(to improve the adhesive with the polyurethane foam layer)