While covers the base material, it is inseparable from the AD 2000 "HP" series (Herstellung und Prüfung – Manufacturing and Testing) for welding.
In simple terms, W1 acts as a comprehensive catalog and rulebook. It lists which steel and cast steel materials are permitted for use in pressure-bearing components under the AD 2000 regulations. It dictates the conditions under which these materials can be used, their temperature limits, and the necessary quality assurance protocols. ad 2000 merkblatt w1
For unalloyed steel P355NH, mandates impact testing at -20°C. If your vessel operates at -10°C but your certificate does not show KV values at that temperature, the material fails compliance. While covers the base material, it is inseparable
is a technical guideline that specifies requirements for flat products (such as plate, sheet, and strip) made of unalloyed and alloy steels used in the fabrication of pressure vessels. It is a critical component of the AD 2000 Code , which provides a comprehensive framework for complying with the European Pressure Equipment Directive (PED) . Core Scope and Application It dictates the conditions under which these materials
A: Yes, most duplex grades are now included in the latest edition of AD 2000 W1 (Group C, sub-group for duplex). Check Annex A of the current issue.