HG/T 20592  法兰 PL 15-25 RF50=-4/R

PL15-25 RF50=-4/R

WN 300(B)-10 RF

BII 2800

WN 25(B)-63 RF A=27 N

BL 500-16 RF

47021 RF1600-0.256.456100-S

WN40(B)-100RF

BL40(B)-25RFnvoker/jmch40s0=90

SO 500(A)-16 RF

SO 500(B)-16 RF FF Sch40 S=65 RF=900 δn=14F�=12l=3.6�–-s/@SO100-rf s=60FS�ҝ