“tongue and groove face”写句子 用tongue and groove face造句大全

1、Steel pipe blank flanges with tongue and groove face for PN 15.0MPa (150 bar)

2、Integral steel pipe flanges with tongue and groove face for PN4.0MPa(40 bar)

3、Hubbed slip-on-welding steel pipe flanges with tongue and groove face for PN 5.0MPa (50 bar)