HG/T 20592  法兰 PL 20(B)-10 FF0-15mRF f1=3 b=4

PL20(B)-10FF0-15mRF f1=3 b=4

LWN25-900 RF B22 HRFF S=4F sch4b=40Ff1=2

WN 20(B)-40 RF S=3.5RF37=h0RF16CH/0�32-Ⅱ-3

WN250-63MF Sc 1

BL 40-150 RF.6 /data

PL50-16 RF D=155 C=13/fmCr

SO200A-16 RF/40-G1 rf3s=76 s

wn40-10mm3c80c S/-6/

/WN50-150RF s=60-