|
|

楼主 |
发表于 2007-5-21 17:33:05
|
显示全部楼层
来自: 中国上海
谢谢cdxwg.最好有这种装置的图纸或者照片。还有,如果能够说服业主,这个是不需要的?. u) f- }9 Y" _! ]& K
以下是他们给的技术指导书中关于这个装置的描述:% f4 N$ u; D& C
3.3.8 Hooks and hook blocks6 ]( W) A7 c- s
The hooks shall be made of forged steel and shall swivel on antifrication bearings arranged to exclude dirt and equipped for lubrication. Hook shall have a locking device which, when engaged,will lock the hook in the desired orientation.
2 |$ m0 Y' L' B) P* F& w Hook blocks shall be constructed from rolled steel and have close fitting guards.9 d$ [, J; E/ L4 w) s/ ]
谢谢大家积极讨论了。 |
评分
-
查看全部评分
|