GB/T 12459  弯头 DN 50-5.54180EL1F s0FM0.61

DN 50-5.54 180EL1F s0FM0.61

WN 450-600RF/H/F-2=110F

PL 600-6 Mch80ch806/5040 s S

BL15-160 RF8-130040 FF1500

PL500(B)-16 RFFc-150 RFSCH4-15

bl100(a)-25 t/6F009 pl100(b0S30

SO 15(A)-10 RF50 rf0-��rf9SRF@oF-60100 RFf

法兰 WN25-300 RFRF S5(LWN25-

B