吊钩在使用中应注意什么问题？--杨远锋的博客

吊钩在使用中应注意什么问题？

[ 2011-7-4 21:32:00 | By: 杨远锋 ]

《起重机械安全规程》中规定：吊钩应有制造单位的合格证等技术证明文件，方可投入使用。否则应经检验，查明性能合格后方可使用。
起重机械不得使用铸造吊钩；吊钩宜设有防止吊物意外脱钩的保险装置；吊钩表面应光洁、无剥裂、锐角、毛刺、裂纹等；吊钩材料应采用优质低碳镇静钢或低碳含金钢；
锻钩一般应用GB699—88《优质碳素结构钢技术条件》中规定的20钢；
板钩一般应用GB700—88《普通碳素结构钢技术条件》中规定的Q235，或GB／T1591—94《低合金高强度结构钢》中规定的16Mn钢。
吊构上的缺陷不得补焊。

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原创

[ 2016-9-6 17:11:42 | By: 原创(游客) ]

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原创

[ 2016-9-28 16:47:28 | By: 原创(游客) ]

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原创

[ 2016-9-30 11:24:04 | By: 原创(游客) ]

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Re:在漫画中识别身边的违章

[ 2016-10-19 14:23:46 | By: yoqux(游客) ]

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Re:在漫画中识别身边的违章

[ 2016-10-19 15:22:34 | By: kafgk(游客) ]

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Re:在漫画中识别身边的违章

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Re:在漫画中识别身边的违章

[ 2017-2-19 23:23:38 | By: kiabf(游客) ]

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[ 2017-2-20 16:06:26 | By: podgk(游客) ]

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