HG/T 20592  法兰 PL 50(B)-63 RFh80Srf Schs/(B)-

PL 50(B)-63 RFh80Srf Schs/(B)-

WN50-150RF 800h40S=5RFRF16RF45

WN 200(B)-25 RF S=12

SO 65-150 RF5=5-156/

20615 WN40-150 RF Sch40.RF fb10-16

PL 150(B)-10 RFSc�@41F B=4807Fn 50(1.6LRF8

WN 40(B)-16 RFรآ�Scm10SF@FFh Sch800R

WN200-150RFBpamSR2/d