... OEM and ODM orders welcome Product Name: Fire pipes1, anti-corrosion performance: the inner surface of pipe not rust;2, anti-fouling ... 50 years;6, designed to meet the precondition of the fire, and reduce costs.Because of its above-mentioned performance, pipeline no rust ... pipe.It belongs to rigid polyurethane foam, because of its own merits, the use of fire to the water, there are many advantages ...