قیمت تضمینی astm a564 برای فروش
نمایندگی astm a564 تضمینی با کیفیت بالا. Astm A564-A564m-19 | PDF. The speci- 'mens shall be heat treated in accordance with 5.1. Unless otherwise specified in the purchase order, the condition of hhardening heat treatment shall be at the option of the producer and testing shall be done at 70 to 80 °F [20 to 25 °C].