“tongue and groove face”可以造什么句，tongue and groove face造句

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)