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胀管为开口薄壁套管；
The expanded tube is thin wall casing with open mouth.
youdao
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适合三通四通管件侧孔的预胀型加工。
Suitable for side expansion processing of Tee pipe fitting and Cross pipe fitting.
youdao
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适合三通四通管件侧孔的预胀型加工。
Suitable for side expansion processing of Tee pipe fitting and Cross pipe fitting.
youdao