Are Dirty Holes Bad For Mechanical Bolts

Podobni Video posnetki:
dessine moi le printemps
dessine moi le printemps ......!...
04-06-2018 'CHAMOIS'
Des chamois aux sports d'hiver .........!...
Waouh
Vallée de Champoléon Hautes-Alpes...
Chamois
ça y est les touristes sont partis à nous les pistes ....!...
Refuge du Glacier Blanc
Technicien ANTENSAT-MIOLLAN Gap Tel 0685401180. Intervention en Haute montagne ...
Opis:
We are supposed to clean holes we drill in rock before installing bolts. We already tested glue in bolts with epoxy and found it to be super strong enough. Now we are testing mechanical bolts in this video