... polyurethane foam 1.support OEM 2.certification:ISO9001,ISO14001 HEAT INSULATION PIPE FITTING FILLED WITH POLYURETHANE FOAMWidely used in ... the urban centralized heat supply, warm room, coal, petroleum, chemical and other industries’ anti-corrosion insulation work.1.Degrees ... and spiral steel pipe (GB and oil standard) 7.Insulation material: Fluoride-Free water foamed rigid polyurethane foam material ...