中文谷tongue and groove face造句怎么写
- 造句
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2、Integral steel pipe flanges with tongue and groove face for PN4.0MPa(40 bar)
1、Steel pipe blank flanges with tongue and groove face for PN 15.0MPa (150 bar)
3、Hubbed slip-on-welding steel pipe flanges with tongue and groove face for PN 5.0MPa (50 bar)
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