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ISO 18953:2025

Steel structures - Structural bolting - Test methods to determine loss of pretension from faying surface coatings
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ISO 18953:2025

Steel structures - Structural bolting - Test methods to determine loss of pretension from faying surface coatings

ISO 18953:2025

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.

SDO ISO: International Organization for Standardization
Document Number ISO 18953
Publication Date Not Available
Language en - English
Page Count
Revision Level
Supercedes
Committee ISO/TC 167
Publish Date Document Id Type View
Not Available ISO 18953:2025 Revision