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楼主 |
发表于 2007-5-21 17:33:05
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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?
; p3 F7 z8 g! T6 b. `以下是他们给的技术指导书中关于这个装置的描述:8 K0 l* R; G4 P* I3 T# s( B
3.3.8 Hooks and hook blocks) _+ F( j V7 F k1 [
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.
) W ^9 u" \& r+ h3 e0 Q/ c Hook blocks shall be constructed from rolled steel and have close fitting guards.
+ x8 h$ m E, i" L$ `/ Y7 }谢谢大家积极讨论了。 |
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