256HC Mast Section How long can a tower crane last? Regulations on service life of tower crane
1、 The following three types of tower cranes shall not be used until they have passed the evaluation by a qualified evaluation agency:
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1. Tower cranes less than 630kn. M (excluding 630kn. M) with a factory life of more than 10 years (excluding 10 years).
2. 630-1250kn. M (excluding 1250kn. M) tower crane with factory life more than 15 years (excluding 15 years).
3. Tower crane of 1250 kn. M and over 20 years (excluding 20 years).
2、 If the service life specified in the operation manual of tower crane is less than the above-mentioned provisions, the service life specified in the operation manual shall be followed.
3、 In addition to the whole machine, the scrapping regulations of the main load-bearing structural parts of the tower crane shall be implemented in accordance with Article 4.7 of the safety regulations for tower cranes (gb5144-2006), "scrapping and working life of structural parts".
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