astm a351 cf8m تضمینی با کیفیت بالا که در سقف سازی استفاده می شود
ASTM A351 CF8M. Austenitic stainless steel classified for Castings, Austenitic, for Pressure-Containing Parts. UNS# J92900 A. As with CF3M, the first character (C) means the alloy is intended for "Corrosion Resistant" service. The second character (F) is the