Standard Specification for Helmets Used in Pole Vaulting Ingestion-build-266356 BS 4825-1:1991+A2:2009 supersedes BS 4825-1:1991
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Description
BS 4825-1:1991+A2:2009 supersedes BS 4825-1:1991
There is also provision for:
The principles of this International Standard may be applied to other fusion welding processes subject to agreement between the contracting parties
NOTE 1 It is recommended that
NOTE 2 The reproducibility values are generally higher than those obtained by the drying method (ISO 665)
Standard Specification for Helmets Used in Pole Vaulting Ingestion-build-266356 BS 4825-1:1991+A2:2009 supersedes BS 4825-1:1991
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