尾喷管是发动机的重要部件，其连接采用电子束焊接方法，对质量要求很高。
As an important part of engine, the welding quality of the tail pipe should be ensured when jointing it using the electron beam welding.
防喷管线应采用螺纹与标准法兰连接，不允许现场焊接。
Blowout preventing lines shall be connected by threads and standard flanges, and on site welding is forbidden. Field welding is not permitted.
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