BS 7677:1993
Current
The latest, up-to-date edition.
Recommendations for classification of imperfections in pipe joint rings
Hardcopy , PDF
English
15-07-1993
Committees responsible
National foreword
Introduction
Recommendations
1 Scope
2 Normative references
3 Classification of imperfections
4 Maximum acceptable limits for imperfections
Annex
A (informative) Bibliography
Table
1 Classification of surface imperfections in zones not
involved in the sealing function
Figures
1 Flash
2 Off-register
3 Mismatch
4 Backrind and parting-line indentation
5 Excessive trimming
6 Flow marks
7 Surface depression
Describes and classifies imperfections in the rubber joint rings for pipelines. Also includes detailed diagrams.
| Committee |
PRI/70
|
| DevelopmentNote |
Also numbered as ISO 9691 Supersedes 91/40185 DC (10/2005)
|
| DocumentType |
Standard
|
| Pages |
18
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
This International Standard describes and classifies imperfections in rubber joint rings for pipelines.
| ISO 6447:1983 | Rubber seals — Joint rings used for gas supply pipes and fittings — Specification for material |
| ISO 6448:1985 | Rubber seals — Joint rings used for petroleum product supply pipes and fittings — Specification for material |
| ISO 4633:2015 | Rubber seals — Joint rings for water supply, drainage and sewerage pipelines — Specification for materials |
| ISO 2781:2008 | Rubber, vulcanized or thermoplastic — Determination of density |
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