API Std 521:2007

Заменен

Guide for Pressure-relieving and Depressuring Systems: Petroleum petrochemical and natural gas industries-Pressure relieving and depressuring systems, Fifth Edition (Includes 2008 Addendum) — 192 стр.

Описание Изменения Ссылки Версии

API Std 521 Addendum:2008

Заменен

Addendum to API Standard 521, Pressure-relieving and Depressuring Systems, Fifth Edition — 11 стр.