|
14677| 3
|
[国家标准] GB/T 23257-2009 埋地钢质管道聚乙烯防腐层 |
|
提示: 该帖被管理员或版主屏蔽
| |
|关于我们|网站地图|油气储运网
( 鲁ICP备11007657号-3 )
GMT+8, 2025-11-4 11:56 , Processed in 0.025202 second(s), 16 queries , Gzip On, MemCached On.
Powered by Discuz! X3.5
Copyright © 2001-2023, Tencent Cloud.
发表于 2014-11-4 22:42:06
