فروش عمده astm a269 جذابیت زیبایی شناختی
ASTM A269-2007_ This standard has been approved for use by agencies of the Department of Defense. 1. Scope*. 1.1 This specification covers grades of nominal-wallthickness, stainless steel tubing for general corrosion-resisting and low- or high-temperature service, as designated in Table 1.