JB/T 1308.6-1999 PN 250 MPa锥面垫、锥面盲垫 型式、.... |
| |
相关帖子
|
|
小黑屋|Archiver|计量论坛
( 闽ICP备06005787号-1—304所 )
电话:0592-5613810 QQ:473647 微信:gfjlbbs闽公网安备 35020602000072号
GMT+8, 2025-6-2 14:52
Powered by Discuz! X3.4
Copyright © 2001-2023, Tencent Cloud.