DIN EN 1228:1996-08 Plastics piping systems - Glass-reinforced thermosetting plastics (GRP) pipes - Determination of initial specific ring stiffness; German version EN 1228:1996
1996DIN EN 1228:1996-08 Plastics piping systems - Glass-reinforced thermosetting plastics (GRP) pipes - Determination of initial specific ring stiffness; German version EN 1228:1996
1996DIN EN 1228:1996 Plastics piping systems - Glass-reinforced thermosetting plastics (GRP) pipes - Determination of initial specific ring stiffness; German version EN 1228:1996