JIS B2220  法兰 SOP FF 10K 50A 10 RFA0 RFRF73,

SOP FF 10K 50A10 RFA0 RFRF73,

WN 25-300 RF S=3.5

WN 350(B)-16 RF S=9.5

SO80-150 RF

wn25-150rf sch40 s=3

BL 24"-150 RF

WN100-150RF是什么意思

3 FM 1400-2.5 δ0=16

DN50-PN100 PL RF Ⅱ

SO 2"-150 RF Sch40F 5000-S�1000f/@LWN100-150 RFom/@