榫槽: tongue-and-groove; mortise面带: wear颈: neck承: bear; hold; carry插: stick in; insert焊: weld; solder钢: sharpen; strop; whet制管: tubulation法兰: flange凹凸面带颈承插焊钢制管法兰: hubbed socket welding steel pipe flanges with male and female face环连接面带颈承插焊钢制管法兰: hubbed socket welding steel pipe flanges with ring-joint face平面带颈承插焊钢制管法兰: hubbed socked welding steel pipe flanges with flat face for pn 0mpa凸面带颈承插焊钢制管法兰: hubbed socket welding steel pipe flanges with raised face for pn 0mpa突面带颈承插焊钢制管法兰: hubbed socket welding steel pipe flanges with raised face榫槽面带颈平焊钢制管法兰: hubbed slip-on-welding steel pipe flanges with tongue and groove face for pn 0mpa榫槽面对焊钢制管法兰: steel pipe welding neck flanges with tongue and groove face for pn 0mpa; steel pipe welding neck flanges with tongue and groove face for pn 5mpa; steel pipe welding neck flanges with tongue and groove face for pn 6mpa平面带颈平焊钢制管法兰: hubbed slip-on-welding steel pipe flanges with flat face for pn 0mpa凸面带颈平焊钢制管法兰: hubbed slip-on-welding steel pipe flanges with raised face for pn 0mpa突面带颈平焊钢制管法兰: hubbed slip-on-welding steel pipe flanges with flate face or raised face凹凸面带颈平焊钢制管法兰: hubbed slip-on-welding steel pipe flanges with male and female face环连接面带颈平焊钢制管法兰: hubbed slip-on-welding steel pipe flanges with ring-joint face for pn 0mpa带颈平焊和带颈承插焊铸铁管法兰: hubbed slip-on-welding and hubbed socket welding cast iron pipe flanges榫槽面钢制管法兰盖: steel pipe blank flanges with tongue and groove face for pn 0mpa榫槽面整体钢制管法兰: integral steel pipe flanges with tongue and groove face for pn 0mpa; integral steel pipe flanges with tongue and groove face for pn mpa; integral steel pipe flanges with tongue and groove face for pn0mpa; integral steel pipe flanges with tongue and groove face for pn6mpa凸面带颈螺纹钢制管法兰: hubbed screwed steel pipe flanges with raised face for pn 0mpa; hubbed screwed steel pipe flanges with raised face for pn 5m; hubbed screwed steel pipe flanges with raised face for pn 6mpa
