TKM-316 DN6 mm-50 mm 过滤器10K 10FCY 10 mm-350 mm PN20 Y 10 mm50 mm蝶阀 PN16 G-PN16DJ G-PN16DJU50 mm-400 mm PN16 PN16DJ PN16DJE PN16DJU PN16DJUE50 mm -150 mm 止回阀PN16R DN10 mm -100 mm PN20F DN10mm -80 mm PN16RF DN15 mm -50 mm 闸阀PN20E DN10 mm-80 mm PN16125FCWI DN50 mm-300 mm PN16 125FCHI DN40mm-200mm PN16 EB(EBH) DN15mm-150mm PN16 16FCJ DN50mm150mm