... 25.4mm High quality with reasonable prices electric resistance welding tube for gas or fluid MIN:10 tonsOD:219mm ... , Q215, Q235, A53 (A,B)TechniqueERW (electric resistance welding)InspectionHydraulic test, eddy current and infrared test.ApplicationThey are generally ... used as low pressure fluid pipe, for example transportation of oil, gas, air, water ...