6.1 Steel castings

6.1.1 The carbon steel casting parts shall be of Grades ZG230-450,ZG270-500, ZG310-570, ZG340-640 in GB/T 11352.6.1.2 Alloy steel castings should be of Grades ZG20Mn,ZG20SiMn, ZG20MnMo, ZG35SiMnMo in JB/T 6402 Castings forthe Large Low Alloy Steels.6.1.3 ......（本文共 836 字 ）     [閱讀本文] >>