NA 041
DIN Standards Committee Heating and Ventilation Technology and their Safety
Technical rule
[CURRENT]
AGFW FW 438
AGFW FW 438
Trenchless tube drawing procedures for district heating pipelines - Controllable horizontal rinsing drilling procedures - Additions and deviations to DVGW-worksheet GW 321
Title (German)
Grabenlose Rohreinziehverfahren für Fernwärmeleitungen - Steuerbare horizontale Spülbohrverfahren - Ergänzungen und Abweichungen zum DVGW-Arbeitsblatt GW 321