threaded nozzle
... 螺纹配合 screw-thread fit; thread fit; 螺纹喷管 threaded nozzle; 螺纹剖面 form; ...
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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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