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REF-THR-228-1

Field Value
Title ISO 228-1:2000 — Pipe threads where pressure-tight joints are not made on the threads — Dimensions, tolerances and designation
Type standard
URL https://www.iso.org/standard/33652.html
Notes Defines dimensions/tolerances and designation for 'G' (parallel) pipe threads intended for joints where thread flanks do not provide pressure tightness.
Linked rules 3

Rules Using This Reference

Rule Pack Severity Title
ALPMA-007 F_OVERLAY major Pipe-thread designation is explicit for fluid/service interfaces (ISO 228-1 where used)
PSTD-007 F_OVERLAY major Pipe thread callouts must explicitly state ISO 228-1 for G-threads
PSTD-008 F_OVERLAY critical ISO 228-1 pipe threads must be parallel and match designated size

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