HG/T 20592  法兰 PL 25(B)-10 RF B=300-

PL 25(B)-10 RF B=300-

LWN 80-150 RF B=77.5 H =215n

WN40-300fmc/0RFR600fm�F50 RF Sch4m00c

WN32 (B)-25RF HG=/b=3/0=8

WN 600-300 RF B=N300(B)-a1615/a23W-c

Bl600-10rfF S=36SCH400

WN200(B)-40 RF S=100 δ

SO250B-40M510 rf d=53-1.

SO 100(B)-16 RF633-RF