| 摘要 |
1,049,885. Making pressure vessels. ZAVODY V. I. LENINA PLZEN, NARODNI PODNIK. Aug. 29, 1963 [Aug. 29, 1962], No. 34137/63. Headings B3A and B3H. A large metal component, particularly a pressure vessel, having one or more projections 1, is built up of separate parts secured together as by welding, the part or parts having the projection or projections being formed by forging or rolling. In a pressure vessel the branch connections are formed with part of the vessel wall by forging or rolling and machining. |
