锥螺纹 meaning in English

taper thread
tapered thread

Flared type tube fittings - male branch tee reducer - body
扩口式变径锥螺纹三通管接头体
Flared type tube fittings - straight thread long connector - body
扩口式锥螺纹长管接头体
Technical specification for taper threaded splicing of rebars
钢筋锥螺纹接头技术规程
Flared type tube fittings - male branch tee - assembly
扩口式锥螺纹三通管接头
Flared type tube fittings - straight thread long connector - assembly
扩口式锥螺纹长管接头

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