1.ASTM A1014-03, ASTM B637-03, AMS 5662M, AMS 5663M, DIN 2.4668, UNS N07718 and API 6A718. 2.Bright round bar: Dia13-200mm We are a leading manufacturer of producing super alloy steel in china, and we are one factory integrating smelting( vacuum, non-vacuum and resmelting), forging, hot rolling, heat treament, cold drawing, straightening, grinding, flaw detection and physical & chemical test. We ...