پشتیبانی سفارشی astm a479
پشتیبانی سفارشی astm a479 ASTM A479/A479M-23a Full Description. 1.1 This specification 2 covers hot- and cold-finished bars of stainless steel, including rounds, squares, and hexagons, and hot-rolled or extruded shapes such as angles, tees, and channels for use …