2258| 0
|
[国家标准] GBT 17395-2008 无缝钢管尺寸、外形、重量及允许偏差 |
| ||
|关于我们|网站地图|油气储运网 ( 鲁ICP备11007657号-3 )
GMT+8, 2024-12-22 11:51 , Processed in 0.021524 second(s), 15 queries , Gzip On, MemCached On.
Powered by Discuz! X3.5
Copyright © 2001-2023, Tencent Cloud.