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US5305505A Process of making a multi-section bomb casing 失效
制造多段炸弹套管的过程

Process of making a multi-section bomb casing
摘要:
A process for making multi-section bomb casings of high strength alloy steel at a reasonable production rate that have the strength and fracture properties of single-piece casings, with the sections being joined using friction welding techniques.
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