2221| 1
|
GB/T 5777-2019 无缝和焊接(埋弧焊除外)钢管纵向和或横向缺欠的全圆周自动超声检测 |
| ||
手机版|小黑屋|机械村 ( 渝ICP备17010994号-1|渝公网安备50022702001048号 )
GMT+8, 2025-1-18 21:21 , Processed in 0.023936 second(s), 4 queries , Gzip On, Redis On.
Powered by 机械村
Copyright © 2012- Jixiecun.com