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DVGW GW 327
Auskleidung von Gas- und Wasserrohrleitungen mit einzuklebenden Gewebeschläuchen
Edition
2011-03
DVGW GW 329
Fachaufsicht und Fachpersonal für steuerbare horizontale Spülbohrverfahren - Lehr- und Prüfplan
Edition
2003-05
DVGW GW 330
Welding of pipes and pipe-line components made of polyethylene (PE 80, PE 100 and PE-Xa) for gas and water lines - Teaching and testing instructions
Edition
2000-11
DVGW GW 330-B1
Welding of Pipes and Pipe-Line Components Made of Polyethylene (PE 80, PE 100 and PE-Xa) for Gas and Water Lines - Teaching and Testing Instructions - Amendment 1: Context, Training Centres, Plastic Pipe Systems for Higher Operating Pressures
Edition
2025-06
DVGW GW 331
Welding Supervisor for Plastic Pipe Systems in Pipe Networks - Requirements and Qualification
Edition
2025-06
DVGW GW 331
Welding supervisor for weldings at PE-pipelines for gas and water supply - Training and examination schedule
Edition
1994-10
DVGW GW 335
Components for Plastic Piping Systems in Pipe Networks
Edition
2024-11
DVGW GW 335-A3
Kunststoff-Rohrleitungssysteme in der Gas- und Wasserverteilung - Anforderungen und Prüfungen - Teil A 3: Rohre aus PE-Xa
Edition
2003-06
DVGW GW 335-A5
Plastic Piping Systems in Gas and Water Supply - Requirements and Tests - Part A5: PE Multilayer Pipes with Reinforcement (Oriented PE) and their Joints and Jointing
Edition
2015-12
DVGW GW 335-B3
Kunststoff-Rohrleitungssysteme in der Gas- und Wasserverteilung - Teil B3: Mechanische Verbinder aus Kunststoffen (POM, PP) für die Wasserverteilung
Edition
2011-09