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ISO 18953:2025
Steel structures — Structural bolting — Test methods to determine loss of pretension from faying surface coatings
Translate name
STANDARD published on 12.12.2025
The information about the standard:
Designation standards: ISO 18953:2025
Publication date standards: 12.12.2025
SKU: NS-1252557
The number of pages: 11
Approximate weight : 33 g (0.07 lbs)
Country: International technical standard
Category: Technical standards ISO
The category - similar standards:
Annotation of standard text ISO 18953:2025 :
Description / Abstract: This document specifies test methods to determine loss of pretension in high-strength bolts due to the presence of coatings on the faying surface(s) of a bolted joint to be used in structural steelwork, when any of the coatings are thick enough to affect the pretension in a bolt in the short term, or can show significant deformation over time under sustained loads (creep-prone materials). The presence within the grip of the bolt of other materials having considerably smaller stiffness than steel, such as insulation, is not included in this test method.
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