abrasion resistant venturi tube Standard:ASME, DIN,GB Material:16MnR/800H Certification:ISO9001 abrasion resistant venturi tube1.Standard:ASME;DIN,GB,2.Material:alloy3.Size:Dia:standard or nonstandard4.Process:centrifugal casting5.Quality:appearance of smooth,can work under presure for long time,advanced testing equipment to ensure thye quality,6.Packing:wrapped in bundles by steel strips or as ...