带颈平焊钢制管法兰

  • FF-平面带颈平焊钢制管法兰

    FF-Slip-on-welding Flange

  • RF-突面带颈平焊钢制管法兰

    RF-Slip-on-welding Flange

  • MF-凹凸面带颈平焊钢制管法兰

    MF-Slip-on-welding Flange

  • TG-榫槽面带颈平焊钢制管法兰

    TG-Slip-on-welding Flange

  • OSG-O 形圈面带颈平焊钢制管法兰

    OSGO--Slip-on-welding Flange