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

RJ-环连接面带颈平焊钢制管法兰

RJ-Slip-on-welding Flange