ارسال رایگان جذابیت زیبایی astm a269 سفارشی
ASTM A269/A269M-14e. . ASTM A269/A269M-22. . 1.1x00a0;This specification covers grades of nominal-wall-thickness, stainless steel tubing for general corrosion-resisting and low- or high-temperature service, as designated in …