sealing strip for valve seat
sealing
阀门中的 double nippel、cap、valve seat in the body、valve seat on
valve for money
Strip
single seat globe valve 的中文意思是什么?
英语翻译Laminated Metal Seal Butterfly Valve with Enamel Seat Se
strip for me 啥意思啊
valve
英语翻译BUTERFLY VALVE CI OR DI BODY / EPDM SEAT FLANGE CL150 RF
seat
Please check,for the vertical strip need 120 pc,for the conv
sealing什么意思