HG/T 20592  法兰 SO 500-10 RF30S0 Mfh4 RF50 R

SO 500-10 RF30S0 Mfh4 RF50 R

PL 500(B)-16 FF=152.40-0.6.f400-1.0FHGRF S

SO 250-150 RF6/data/comMÃ900(B)rs=90 k=840

WN 25-600 RF B

wn 80-100 RF

pl250-16RF

WN 1 1/2"-300 RF Sch160

wn100-16MF SC0R

wn 50(b)-63 m s=4.5S СҸв–„Р‘вҲҷв�