NA 092
DIN Standards Committee Welding and allied processes
Technical rule
[CURRENT]
AGFW FW 446
AGFW FW 446
Welding seams at district heating pipes with steel service pipes - Welding, examining and evaluating
Title (German)
Schweißnähte an Fernwärmerohrleitungen aus Stahl - Schweißen, Prüfen und Bewerten