سازنده مقرون به صرفه astm a479
لنا سازنده مقرون به صرفه astm a479. A479/A479M Standard Specification for Stainless Steel Bars and Shapes for Use in Boilers and Other Pressure Vessels. AbstractThis specification covers hot- and cold-finished bars of stainless steel, including rounds, squares, and hexagons, and hot-rolled or extruded shapes such as angles ...