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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?
* Z& l/ T2 J) O$ ^以下是他们给的技术指导书中关于这个装置的描述:
- b$ l* z7 W4 H3.3.8 Hooks and hook blocks
: D% e& r" E* l% N! p 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.
" D) f( g7 W g9 D8 A; ~7 j Hook blocks shall be constructed from rolled steel and have close fitting guards.
, i( {3 f+ l: W- O; n谢谢大家积极讨论了。 |
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