搜索 a490 文章

46522 ASTM A490M-09a Standard Specification for High-Strength Steel Bolts, Classes
技术  •  leunghb  •  2010-01-08 11:17
43444 ASTM A490-09 Standard Specification for Structural Bolts, Alloy Steel, Heat
技术  •  leunghb  •  2010-01-08 10:53

Copyright © 2020 All Rights Reserved. 仪器信息网(cncal.com) 版权所有
GMT+8, 2024-12-23 13:47, Processed in: 0.331048 (s)