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Corrosion Proof Epoxy Steel Pipe for Firefighting Work. Dual Anti-Corrosion Protection: Combines steel strength with epoxy coating to resist internal and external corrosion. Fireproof Performance: Specially designed for fire sprinklers and hydrants with long-term standby safety. Long Design Life: Design lifespan reaches over 50 years under standard operating conditions. Customizable Length: Length is customizable to meet specific project requirements. Smooth Inner Wall: Eliminates blockage risk and ensures unobstructed water flow. OEM/ODM Services: Professional source factory providing customization from samples. Fast Installation: Groove-type and flange connections require no welding or secondary treatment.