کارخانه astm a269
ASTM A269/A269M covers . Seamless and Welded Austenitic Stainless Steel Tubing for General Service. The focus of A269 is mechanical integrity and corrosion resistance of stainless tubing for a variety of applications. It is incorporated in the list of acceptable material specifications in the . ASME B31.3 Process Piping Code. ASTM A270/A270M …