Pipeline valves. Forgings, die forgings and rolled stocks. Technical requirementsPipeline valves. Forgings, die forgings and rolled stocks. Technical requirements
Description in Russian:
Арматура трубопроводная. Поковки, штамповки и заготовки из проката. Технические требования
Standardization in Russian Federation. National Standards of Russian Federation. Instructions for development, taking over, revision, correction and cancellation