平面: plane; two dimensions; flat ...板式: plate-type; type of metre fo ...平: flat; level; even; smooth焊: weld; solder钢: sharpen; strop; whet制管: tubulation法兰: flange凸面板式平焊钢制管法兰: slip-on welding plate steel pipe flanges with raised face for pn 6mpa突面板式平焊钢制管法兰: slip-on-welding plate steel pipe flanges with flate face or raised face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平面、突面对焊钢制管法兰: steel pipe welding neck flanges with flat face or raised face平面对焊钢制管法兰: steel pipe welding neck flanges with flat face for pn 25mpa; steel pipe welding neck flanges with flat face for pn 6mpa; steel pipe welding neck flanges with flat face for pn0mpa; steel pipe welding neck flanges with flat face for pn6mpa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凹凸面平焊环板式松套钢制管法兰: loose plate steel pipe flanges with weld-on collar with male and female face凸面平焊环松套板式钢制管法兰: loose plate steel pipe flanges with weld-on-collar with raised face for pn 6mpa突面平焊环板式松套钢制管法兰: loose plate steel pipe flanges with weld-on collar with raised face榫槽面平焊环板式松套钢制管法兰: loose plate steel pipe flanges with weld-on collar with tongue and groove 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平面钢制管法兰盖: steel pipe blank flanges with flat face for pn 6mpa凹凸面对焊钢制管法兰: steel pipe welding neck flanges with male and female face for pn 0mpa; steel pipe welding neck flanges with male and female face for pn 5mpa; steel pipe welding neck flanges with male and female face for pn mpa环连接面对焊钢制管法兰: steel pipe welding neck flanges with ring-joint face for pn 0mpa