HG/T 20592  法兰 PL 600-6 RFRFF0.250F2.54.0- scM16.850 65B)-F2.54.0-f1331.

PL50(B)-25RFf0.6=4.2s0-mpampamm.244 K25RF Sc600 RF S00

PL 600-6 rfRFF0.250F2.54.0- scM16.850 65B)-F2.54.0-f1331.

BL150-63FFFb=4 f1=3150S=3.9

pl450(b)-10 rf c=18 f1=3 d=

BI 1200-S/F H=201F6 RF16 RF RF S=10

WN300-150 RF B=313.5-300 RFwn800b-16r

2 F