... ,XXSUsagePetroleum, Smelting, Boiler Use, Water transport, Building, Machinery, Traffic, Aviation, Oil development, etcOD ToleranceD<48.3mm,+-0.4mm/-0.79mm,D48.3 ... 's requestAdvantagehigh wear-resisting ,aging resistant , service life is long, high security, highly pressurized, widely usedMin order3 tons ASTM carbon steel pipe