HG/T 20592  法兰 PL 40(B)-16 RF B=41 b=38 H=366HG/H=16

PL40(B)-16 RF B=41 b=38 H=366HG/H=16

bl350-300 RF870 RF)-1

B WN 650-300 RF B=634.61

PL125-16Rf RF 30/wp-c33

wn100-25fm s=6=40RF=4RF s ff b1=62 cSch60=

3 RF1600-1.

BL 50-63 RFТӣA=892.23.

BI 600S=13å½ã‚0S RJF

BL 40-16 FF/00 rfer/jmh=5.

BL 40-16