... Insulation MaterialsPlace of Origin: China (Mainland)Material: Other SpecificationsRubber foam pipe / tube for solar energy ,Air-condition system . B2 class1. ... as softness,folding resistance,heat proof,cold resistant,water proof,fire resistance,shock-proof,low factor of heat conduction and sound ... ): 500 or 1000 Length(mm) :10,000 or 20,0002) Pipe : Thickness(mm): 15-30 , Inner dia(mm) 16-89, ...